./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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 0.3.0-?-8fc3dc6-m [2025-03-17 06:30:11,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:30:11,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:30:11,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:30:11,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:30:11,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:30:11,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:30:11,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:30:11,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:30:11,633 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:30:11,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:30:11,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:30:11,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:30:11,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:30:11,634 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:30:11,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:30:11,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:30:11,635 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 [2025-03-17 06:30:11,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:30:11,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:30:11,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:30:11,855 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:30:11,855 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:30:11,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2025-03-17 06:30:13,007 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffa83950/7f46921bc62e4bcf8fbd86987a00a50a/FLAGccd6ecd21 [2025-03-17 06:30:13,386 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:30:13,387 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2025-03-17 06:30:13,410 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffa83950/7f46921bc62e4bcf8fbd86987a00a50a/FLAGccd6ecd21 [2025-03-17 06:30:13,603 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffa83950/7f46921bc62e4bcf8fbd86987a00a50a [2025-03-17 06:30:13,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:30:13,605 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:30:13,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:30:13,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:30:13,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:30:13,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:30:13" (1/1) ... [2025-03-17 06:30:13,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fdf414e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:13, skipping insertion in model container [2025-03-17 06:30:13,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:30:13" (1/1) ... [2025-03-17 06:30:13,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:30:13,953 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[186203,186216] [2025-03-17 06:30:13,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:30:13,988 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:30:14,022 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[186203,186216] [2025-03-17 06:30:14,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:30:14,065 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:30:14,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14 WrapperNode [2025-03-17 06:30:14,067 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:30:14,068 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:30:14,068 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:30:14,068 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:30:14,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (1/1) ... [2025-03-17 06:30:14,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (1/1) ... [2025-03-17 06:30:14,097 INFO L138 Inliner]: procedures = 246, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 126 [2025-03-17 06:30:14,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:30:14,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:30:14,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:30:14,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:30:14,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (1/1) ... [2025-03-17 06:30:14,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (1/1) ... [2025-03-17 06:30:14,107 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (1/1) ... [2025-03-17 06:30:14,120 INFO L175 MemorySlicer]: Split 17 memory accesses to 3 slices as follows [2, 2, 13]. 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, 2, 6]. [2025-03-17 06:30:14,120 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (1/1) ... [2025-03-17 06:30:14,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (1/1) ... [2025-03-17 06:30:14,137 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (1/1) ... [2025-03-17 06:30:14,142 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (1/1) ... [2025-03-17 06:30:14,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (1/1) ... [2025-03-17 06:30:14,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (1/1) ... [2025-03-17 06:30:14,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:30:14,153 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:30:14,154 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:30:14,154 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:30:14,155 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (1/1) ... [2025-03-17 06:30:14,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:30:14,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:30:14,179 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) [2025-03-17 06:30:14,182 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 [2025-03-17 06:30:14,198 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2025-03-17 06:30:14,198 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2025-03-17 06:30:14,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 06:30:14,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 06:30:14,198 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 06:30:14,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:30:14,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 06:30:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:30:14,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:30:14,200 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:30:14,400 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:30:14,401 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:30:14,614 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:30:14,614 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:30:14,724 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:30:14,724 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:30:14,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:30:14 BoogieIcfgContainer [2025-03-17 06:30:14,725 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:30:14,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:30:14,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:30:14,731 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:30:14,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:30:13" (1/3) ... [2025-03-17 06:30:14,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318c7d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:30:14, skipping insertion in model container [2025-03-17 06:30:14,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:30:14" (2/3) ... [2025-03-17 06:30:14,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318c7d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:30:14, skipping insertion in model container [2025-03-17 06:30:14,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:30:14" (3/3) ... [2025-03-17 06:30:14,733 INFO L128 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2025-03-17 06:30:14,744 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:30:14,748 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-2_1-container_of.i that has 2 procedures, 46 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-03-17 06:30:14,748 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:30:14,804 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 06:30:14,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 60 transitions, 134 flow [2025-03-17 06:30:14,871 INFO L124 PetriNetUnfolderBase]: 10/73 cut-off events. [2025-03-17 06:30:14,873 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 06:30:14,876 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 6. Compared 137 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. [2025-03-17 06:30:14,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 60 transitions, 134 flow [2025-03-17 06:30:14,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 118 flow [2025-03-17 06:30:14,884 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:30:14,893 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;@650354a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:30:14,895 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-03-17 06:30:14,898 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:30:14,898 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 06:30:14,898 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:30:14,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:14,899 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-17 06:30:14,899 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:14,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash 10966020, now seen corresponding path program 1 times [2025-03-17 06:30:14,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:14,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714360007] [2025-03-17 06:30:14,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:30:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:15,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 06:30:15,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 06:30:15,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:30:15,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:15,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:15,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714360007] [2025-03-17 06:30:15,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714360007] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:15,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:15,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 06:30:15,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004164544] [2025-03-17 06:30:15,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:15,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:30:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:15,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:30:15,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:30:15,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:15,399 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) [2025-03-17 06:30:15,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:15,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:15,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:15,649 INFO L124 PetriNetUnfolderBase]: 466/826 cut-off events. [2025-03-17 06:30:15,650 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 06:30:15,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 826 events. 466/826 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3455 event pairs, 345 based on Foata normal form. 3/825 useless extension candidates. Maximal degree in co-relation 1541. Up to 602 conditions per place. [2025-03-17 06:30:15,658 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 39 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2025-03-17 06:30:15,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 218 flow [2025-03-17 06:30:15,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:30:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:30:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2025-03-17 06:30:15,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-03-17 06:30:15,670 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 118 flow. Second operand 3 states and 84 transitions. [2025-03-17 06:30:15,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 218 flow [2025-03-17 06:30:15,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 210 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 06:30:15,677 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 112 flow [2025-03-17 06:30:15,679 INFO L262 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} [2025-03-17 06:30:15,681 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2025-03-17 06:30:15,681 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 112 flow [2025-03-17 06:30:15,682 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) [2025-03-17 06:30:15,682 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:15,682 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 06:30:15,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:30:15,682 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:15,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:15,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1948440103, now seen corresponding path program 1 times [2025-03-17 06:30:15,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:15,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297741447] [2025-03-17 06:30:15,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:30:15,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:15,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 06:30:15,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 06:30:15,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:30:15,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:15,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:15,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297741447] [2025-03-17 06:30:15,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297741447] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:15,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:15,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:30:15,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055860896] [2025-03-17 06:30:15,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:15,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:30:15,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:15,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:30:15,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:30:15,892 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:15,893 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) [2025-03-17 06:30:15,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:15,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:15,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:16,070 INFO L124 PetriNetUnfolderBase]: 466/821 cut-off events. [2025-03-17 06:30:16,070 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2025-03-17 06:30:16,073 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 44. Compared 3457 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. [2025-03-17 06:30:16,078 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 47 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2025-03-17 06:30:16,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 265 flow [2025-03-17 06:30:16,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:30:16,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:30:16,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2025-03-17 06:30:16,080 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2025-03-17 06:30:16,081 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 112 flow. Second operand 5 states and 109 transitions. [2025-03-17 06:30:16,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 265 flow [2025-03-17 06:30:16,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 245 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 06:30:16,083 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 126 flow [2025-03-17 06:30:16,083 INFO L262 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} [2025-03-17 06:30:16,085 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2025-03-17 06:30:16,085 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 126 flow [2025-03-17 06:30:16,086 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) [2025-03-17 06:30:16,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:16,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:30:16,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:30:16,086 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:16,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:16,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1762459293, now seen corresponding path program 1 times [2025-03-17 06:30:16,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:16,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800880616] [2025-03-17 06:30:16,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:30:16,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:16,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 06:30:16,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:30:16,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:30:16,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:16,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:16,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800880616] [2025-03-17 06:30:16,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800880616] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:16,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:16,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:30:16,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006889766] [2025-03-17 06:30:16,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:16,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:30:16,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:16,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:30:16,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:30:16,274 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:16,274 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) [2025-03-17 06:30:16,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:16,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:16,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:16,506 INFO L124 PetriNetUnfolderBase]: 562/1029 cut-off events. [2025-03-17 06:30:16,506 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2025-03-17 06:30:16,508 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 4904 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. [2025-03-17 06:30:16,511 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 49 selfloop transitions, 10 changer transitions 4/67 dead transitions. [2025-03-17 06:30:16,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 306 flow [2025-03-17 06:30:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:30:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 06:30:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2025-03-17 06:30:16,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425 [2025-03-17 06:30:16,513 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 126 flow. Second operand 4 states and 102 transitions. [2025-03-17 06:30:16,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 306 flow [2025-03-17 06:30:16,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 286 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 06:30:16,514 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 150 flow [2025-03-17 06:30:16,515 INFO L262 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} [2025-03-17 06:30:16,515 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2025-03-17 06:30:16,515 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 150 flow [2025-03-17 06:30:16,515 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) [2025-03-17 06:30:16,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:16,515 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:30:16,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:30:16,517 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:16,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1823072285, now seen corresponding path program 1 times [2025-03-17 06:30:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:16,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4758565] [2025-03-17 06:30:16,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:30:16,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:16,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 06:30:16,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 06:30:16,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:30:16,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:16,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4758565] [2025-03-17 06:30:16,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4758565] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:16,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:16,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:30:16,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345060927] [2025-03-17 06:30:16,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:16,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:30:16,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:16,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:30:16,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:30:16,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2025-03-17 06:30:16,637 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) [2025-03-17 06:30:16,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:16,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2025-03-17 06:30:16,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:16,777 INFO L124 PetriNetUnfolderBase]: 225/408 cut-off events. [2025-03-17 06:30:16,777 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2025-03-17 06:30:16,778 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 1439 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. [2025-03-17 06:30:16,780 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 48 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2025-03-17 06:30:16,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 278 flow [2025-03-17 06:30:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:30:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 06:30:16,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2025-03-17 06:30:16,782 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2025-03-17 06:30:16,782 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 150 flow. Second operand 4 states and 131 transitions. [2025-03-17 06:30:16,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 278 flow [2025-03-17 06:30:16,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 248 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-17 06:30:16,784 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 96 flow [2025-03-17 06:30:16,784 INFO L262 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} [2025-03-17 06:30:16,785 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -12 predicate places. [2025-03-17 06:30:16,785 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 96 flow [2025-03-17 06:30:16,785 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) [2025-03-17 06:30:16,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:16,785 INFO L206 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] [2025-03-17 06:30:16,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:30:16,786 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:16,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:16,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1083940132, now seen corresponding path program 1 times [2025-03-17 06:30:16,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:16,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669542318] [2025-03-17 06:30:16,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:30:16,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:16,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 06:30:16,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 06:30:16,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:30:16,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:17,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:17,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669542318] [2025-03-17 06:30:17,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669542318] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:17,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:17,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:30:17,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602021182] [2025-03-17 06:30:17,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:17,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:30:17,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:17,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:30:17,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:30:17,238 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2025-03-17 06:30:17,238 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) [2025-03-17 06:30:17,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:17,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2025-03-17 06:30:17,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:17,648 INFO L124 PetriNetUnfolderBase]: 483/862 cut-off events. [2025-03-17 06:30:17,648 INFO L125 PetriNetUnfolderBase]: For 321/321 co-relation queries the response was YES. [2025-03-17 06:30:17,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 862 events. 483/862 cut-off events. For 321/321 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3886 event pairs, 65 based on Foata normal form. 8/868 useless extension candidates. Maximal degree in co-relation 366. Up to 223 conditions per place. [2025-03-17 06:30:17,652 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 83 selfloop transitions, 23 changer transitions 0/113 dead transitions. [2025-03-17 06:30:17,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 113 transitions, 539 flow [2025-03-17 06:30:17,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 06:30:17,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 06:30:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2025-03-17 06:30:17,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5283333333333333 [2025-03-17 06:30:17,655 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 96 flow. Second operand 10 states and 317 transitions. [2025-03-17 06:30:17,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 113 transitions, 539 flow [2025-03-17 06:30:17,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 113 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 06:30:17,657 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 272 flow [2025-03-17 06:30:17,657 INFO L262 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} [2025-03-17 06:30:17,658 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2025-03-17 06:30:17,658 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 272 flow [2025-03-17 06:30:17,658 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) [2025-03-17 06:30:17,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:17,658 INFO L206 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] [2025-03-17 06:30:17,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:30:17,658 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:17,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:17,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1851088184, now seen corresponding path program 2 times [2025-03-17 06:30:17,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:17,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112752556] [2025-03-17 06:30:17,659 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:30:17,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:17,678 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 1 equivalence classes. [2025-03-17 06:30:17,690 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 06:30:17,690 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:30:17,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:18,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:18,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112752556] [2025-03-17 06:30:18,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112752556] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:18,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:18,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:30:18,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260537932] [2025-03-17 06:30:18,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:18,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:30:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:18,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:30:18,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:30:18,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2025-03-17 06:30:18,153 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) [2025-03-17 06:30:18,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:18,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2025-03-17 06:30:18,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:18,549 INFO L124 PetriNetUnfolderBase]: 537/964 cut-off events. [2025-03-17 06:30:18,550 INFO L125 PetriNetUnfolderBase]: For 1456/1456 co-relation queries the response was YES. [2025-03-17 06:30:18,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 964 events. 537/964 cut-off events. For 1456/1456 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4466 event pairs, 30 based on Foata normal form. 8/970 useless extension candidates. Maximal degree in co-relation 1715. Up to 330 conditions per place. [2025-03-17 06:30:18,559 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 78 selfloop transitions, 49 changer transitions 0/134 dead transitions. [2025-03-17 06:30:18,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 134 transitions, 966 flow [2025-03-17 06:30:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:30:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:30:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 348 transitions. [2025-03-17 06:30:18,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2025-03-17 06:30:18,561 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 272 flow. Second operand 12 states and 348 transitions. [2025-03-17 06:30:18,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 134 transitions, 966 flow [2025-03-17 06:30:18,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 134 transitions, 952 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 06:30:18,568 INFO L231 Difference]: Finished difference. Result has 70 places, 86 transitions, 640 flow [2025-03-17 06:30:18,568 INFO L262 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} [2025-03-17 06:30:18,569 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2025-03-17 06:30:18,569 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 640 flow [2025-03-17 06:30:18,570 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) [2025-03-17 06:30:18,570 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:18,570 INFO L206 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] [2025-03-17 06:30:18,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 06:30:18,570 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:18,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:18,571 INFO L85 PathProgramCache]: Analyzing trace with hash 651717180, now seen corresponding path program 3 times [2025-03-17 06:30:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:18,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076253435] [2025-03-17 06:30:18,571 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:30:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:18,591 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 1 equivalence classes. [2025-03-17 06:30:18,606 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 06:30:18,607 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:30:18,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:19,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076253435] [2025-03-17 06:30:19,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076253435] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:19,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:19,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 06:30:19,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073895126] [2025-03-17 06:30:19,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:19,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 06:30:19,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:19,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 06:30:19,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:30:19,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:19,248 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) [2025-03-17 06:30:19,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:19,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:19,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:19,934 INFO L124 PetriNetUnfolderBase]: 834/1543 cut-off events. [2025-03-17 06:30:19,934 INFO L125 PetriNetUnfolderBase]: For 4885/4885 co-relation queries the response was YES. [2025-03-17 06:30:19,937 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 8380 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. [2025-03-17 06:30:19,943 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 121 selfloop transitions, 56 changer transitions 0/179 dead transitions. [2025-03-17 06:30:19,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 179 transitions, 1599 flow [2025-03-17 06:30:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:30:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 06:30:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 261 transitions. [2025-03-17 06:30:19,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29 [2025-03-17 06:30:19,945 INFO L175 Difference]: Start difference. First operand has 70 places, 86 transitions, 640 flow. Second operand 15 states and 261 transitions. [2025-03-17 06:30:19,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 179 transitions, 1599 flow [2025-03-17 06:30:19,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 179 transitions, 1518 flow, removed 30 selfloop flow, removed 4 redundant places. [2025-03-17 06:30:19,955 INFO L231 Difference]: Finished difference. Result has 88 places, 106 transitions, 966 flow [2025-03-17 06:30:19,955 INFO L262 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} [2025-03-17 06:30:19,955 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2025-03-17 06:30:19,955 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 106 transitions, 966 flow [2025-03-17 06:30:19,955 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) [2025-03-17 06:30:19,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:19,956 INFO L206 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] [2025-03-17 06:30:19,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 06:30:19,956 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:19,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:19,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1974618822, now seen corresponding path program 4 times [2025-03-17 06:30:19,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:19,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419735292] [2025-03-17 06:30:19,956 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:30:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:19,974 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-03-17 06:30:19,984 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 06:30:19,984 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:30:19,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:20,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:20,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419735292] [2025-03-17 06:30:20,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419735292] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:20,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:20,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:30:20,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003728180] [2025-03-17 06:30:20,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:20,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:30:20,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:20,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:30:20,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:30:20,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:20,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 106 transitions, 966 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:30:20,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:20,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:20,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:20,694 INFO L124 PetriNetUnfolderBase]: 875/1646 cut-off events. [2025-03-17 06:30:20,694 INFO L125 PetriNetUnfolderBase]: For 6114/6114 co-relation queries the response was YES. [2025-03-17 06:30:20,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6910 conditions, 1646 events. 875/1646 cut-off events. For 6114/6114 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9196 event pairs, 67 based on Foata normal form. 2/1648 useless extension candidates. Maximal degree in co-relation 6864. Up to 586 conditions per place. [2025-03-17 06:30:20,705 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 103 selfloop transitions, 66 changer transitions 0/171 dead transitions. [2025-03-17 06:30:20,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 171 transitions, 1755 flow [2025-03-17 06:30:20,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:30:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:30:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2025-03-17 06:30:20,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2861111111111111 [2025-03-17 06:30:20,707 INFO L175 Difference]: Start difference. First operand has 88 places, 106 transitions, 966 flow. Second operand 12 states and 206 transitions. [2025-03-17 06:30:20,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 171 transitions, 1755 flow [2025-03-17 06:30:20,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 171 transitions, 1709 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-03-17 06:30:20,727 INFO L231 Difference]: Finished difference. Result has 99 places, 114 transitions, 1177 flow [2025-03-17 06:30:20,728 INFO L262 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=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1177, PETRI_PLACES=99, PETRI_TRANSITIONS=114} [2025-03-17 06:30:20,729 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2025-03-17 06:30:20,729 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 114 transitions, 1177 flow [2025-03-17 06:30:20,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:30:20,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:20,730 INFO L206 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] [2025-03-17 06:30:20,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 06:30:20,730 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:20,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:20,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1377369530, now seen corresponding path program 5 times [2025-03-17 06:30:20,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:20,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287882924] [2025-03-17 06:30:20,731 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:30:20,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:20,751 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 1 equivalence classes. [2025-03-17 06:30:20,760 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 06:30:20,760 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:30:20,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:21,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:21,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287882924] [2025-03-17 06:30:21,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287882924] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:21,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:21,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:30:21,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192568387] [2025-03-17 06:30:21,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:21,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:30:21,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:21,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:30:21,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:30:21,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2025-03-17 06:30:21,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 114 transitions, 1177 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) [2025-03-17 06:30:21,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:21,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2025-03-17 06:30:21,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:21,418 INFO L124 PetriNetUnfolderBase]: 784/1503 cut-off events. [2025-03-17 06:30:21,419 INFO L125 PetriNetUnfolderBase]: For 7952/7952 co-relation queries the response was YES. [2025-03-17 06:30:21,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6648 conditions, 1503 events. 784/1503 cut-off events. For 7952/7952 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8314 event pairs, 139 based on Foata normal form. 14/1517 useless extension candidates. Maximal degree in co-relation 6595. Up to 934 conditions per place. [2025-03-17 06:30:21,429 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 83 selfloop transitions, 74 changer transitions 0/167 dead transitions. [2025-03-17 06:30:21,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 167 transitions, 2020 flow [2025-03-17 06:30:21,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:30:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 06:30:21,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 272 transitions. [2025-03-17 06:30:21,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2025-03-17 06:30:21,432 INFO L175 Difference]: Start difference. First operand has 99 places, 114 transitions, 1177 flow. Second operand 9 states and 272 transitions. [2025-03-17 06:30:21,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 167 transitions, 2020 flow [2025-03-17 06:30:21,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 167 transitions, 1922 flow, removed 20 selfloop flow, removed 6 redundant places. [2025-03-17 06:30:21,455 INFO L231 Difference]: Finished difference. Result has 107 places, 142 transitions, 1742 flow [2025-03-17 06:30:21,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1742, PETRI_PLACES=107, PETRI_TRANSITIONS=142} [2025-03-17 06:30:21,457 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2025-03-17 06:30:21,457 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 142 transitions, 1742 flow [2025-03-17 06:30:21,458 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) [2025-03-17 06:30:21,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:21,458 INFO L206 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] [2025-03-17 06:30:21,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 06:30:21,458 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:21,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:21,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1184273300, now seen corresponding path program 6 times [2025-03-17 06:30:21,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:21,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282570675] [2025-03-17 06:30:21,458 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:30:21,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:21,478 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 1 equivalence classes. [2025-03-17 06:30:21,487 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 06:30:21,487 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:30:21,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:21,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:21,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:21,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282570675] [2025-03-17 06:30:21,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282570675] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:21,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:21,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:30:21,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776223277] [2025-03-17 06:30:21,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:21,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:30:21,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:21,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:30:21,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:30:21,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:21,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 142 transitions, 1742 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:30:21,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:21,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:21,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:22,155 INFO L124 PetriNetUnfolderBase]: 784/1499 cut-off events. [2025-03-17 06:30:22,156 INFO L125 PetriNetUnfolderBase]: For 9159/9159 co-relation queries the response was YES. [2025-03-17 06:30:22,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7166 conditions, 1499 events. 784/1499 cut-off events. For 9159/9159 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8241 event pairs, 68 based on Foata normal form. 2/1501 useless extension candidates. Maximal degree in co-relation 7100. Up to 545 conditions per place. [2025-03-17 06:30:22,167 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 109 selfloop transitions, 77 changer transitions 0/187 dead transitions. [2025-03-17 06:30:22,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 187 transitions, 2454 flow [2025-03-17 06:30:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:30:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:30:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2025-03-17 06:30:22,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28055555555555556 [2025-03-17 06:30:22,170 INFO L175 Difference]: Start difference. First operand has 107 places, 142 transitions, 1742 flow. Second operand 12 states and 202 transitions. [2025-03-17 06:30:22,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 187 transitions, 2454 flow [2025-03-17 06:30:22,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 187 transitions, 2352 flow, removed 44 selfloop flow, removed 3 redundant places. [2025-03-17 06:30:22,202 INFO L231 Difference]: Finished difference. Result has 114 places, 141 transitions, 1838 flow [2025-03-17 06:30:22,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1838, PETRI_PLACES=114, PETRI_TRANSITIONS=141} [2025-03-17 06:30:22,202 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 61 predicate places. [2025-03-17 06:30:22,202 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 141 transitions, 1838 flow [2025-03-17 06:30:22,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:30:22,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:22,203 INFO L206 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] [2025-03-17 06:30:22,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 06:30:22,203 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:22,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:22,203 INFO L85 PathProgramCache]: Analyzing trace with hash -766817505, now seen corresponding path program 1 times [2025-03-17 06:30:22,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:22,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478535030] [2025-03-17 06:30:22,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:30:22,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:22,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:30:22,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:22,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:30:22,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:23,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:23,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478535030] [2025-03-17 06:30:23,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478535030] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:23,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:23,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 06:30:23,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879905288] [2025-03-17 06:30:23,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:23,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:30:23,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:23,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:30:23,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:30:23,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:23,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 141 transitions, 1838 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) [2025-03-17 06:30:23,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:23,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:23,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:23,877 INFO L124 PetriNetUnfolderBase]: 984/1863 cut-off events. [2025-03-17 06:30:23,877 INFO L125 PetriNetUnfolderBase]: For 12449/12449 co-relation queries the response was YES. [2025-03-17 06:30:23,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9128 conditions, 1863 events. 984/1863 cut-off events. For 12449/12449 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10743 event pairs, 198 based on Foata normal form. 1/1864 useless extension candidates. Maximal degree in co-relation 8871. Up to 1180 conditions per place. [2025-03-17 06:30:23,890 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 155 selfloop transitions, 60 changer transitions 40/256 dead transitions. [2025-03-17 06:30:23,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 256 transitions, 3566 flow [2025-03-17 06:30:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 06:30:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-17 06:30:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 262 transitions. [2025-03-17 06:30:23,892 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27291666666666664 [2025-03-17 06:30:23,892 INFO L175 Difference]: Start difference. First operand has 114 places, 141 transitions, 1838 flow. Second operand 16 states and 262 transitions. [2025-03-17 06:30:23,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 256 transitions, 3566 flow [2025-03-17 06:30:23,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 256 transitions, 3406 flow, removed 19 selfloop flow, removed 10 redundant places. [2025-03-17 06:30:23,943 INFO L231 Difference]: Finished difference. Result has 125 places, 162 transitions, 2191 flow [2025-03-17 06:30:23,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2191, PETRI_PLACES=125, PETRI_TRANSITIONS=162} [2025-03-17 06:30:23,944 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2025-03-17 06:30:23,944 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 162 transitions, 2191 flow [2025-03-17 06:30:23,944 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) [2025-03-17 06:30:23,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:23,944 INFO L206 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] [2025-03-17 06:30:23,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 06:30:23,944 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:23,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1250313919, now seen corresponding path program 2 times [2025-03-17 06:30:23,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:23,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516291920] [2025-03-17 06:30:23,945 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:30:23,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:23,958 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:30:23,973 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:23,974 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:30:23,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:24,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516291920] [2025-03-17 06:30:24,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516291920] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:24,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:24,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 06:30:24,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682713876] [2025-03-17 06:30:24,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:24,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:30:24,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:24,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:30:24,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:30:24,593 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:24,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 162 transitions, 2191 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) [2025-03-17 06:30:24,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:24,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:24,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:25,362 INFO L124 PetriNetUnfolderBase]: 917/1758 cut-off events. [2025-03-17 06:30:25,363 INFO L125 PetriNetUnfolderBase]: For 12630/12630 co-relation queries the response was YES. [2025-03-17 06:30:25,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8766 conditions, 1758 events. 917/1758 cut-off events. For 12630/12630 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10202 event pairs, 281 based on Foata normal form. 1/1759 useless extension candidates. Maximal degree in co-relation 8702. Up to 1269 conditions per place. [2025-03-17 06:30:25,374 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 143 selfloop transitions, 52 changer transitions 45/241 dead transitions. [2025-03-17 06:30:25,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 241 transitions, 3416 flow [2025-03-17 06:30:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 06:30:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-17 06:30:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 222 transitions. [2025-03-17 06:30:25,376 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2846153846153846 [2025-03-17 06:30:25,376 INFO L175 Difference]: Start difference. First operand has 125 places, 162 transitions, 2191 flow. Second operand 13 states and 222 transitions. [2025-03-17 06:30:25,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 241 transitions, 3416 flow [2025-03-17 06:30:25,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 241 transitions, 3157 flow, removed 38 selfloop flow, removed 10 redundant places. [2025-03-17 06:30:25,429 INFO L231 Difference]: Finished difference. Result has 130 places, 164 transitions, 2137 flow [2025-03-17 06:30:25,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2006, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2137, PETRI_PLACES=130, PETRI_TRANSITIONS=164} [2025-03-17 06:30:25,431 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2025-03-17 06:30:25,431 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 164 transitions, 2137 flow [2025-03-17 06:30:25,432 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) [2025-03-17 06:30:25,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:25,432 INFO L206 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] [2025-03-17 06:30:25,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 06:30:25,432 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:25,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2072534277, now seen corresponding path program 3 times [2025-03-17 06:30:25,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:25,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843177680] [2025-03-17 06:30:25,433 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:30:25,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:25,448 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:30:25,462 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:25,463 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:30:25,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:26,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:26,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843177680] [2025-03-17 06:30:26,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843177680] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:30:26,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632237605] [2025-03-17 06:30:26,044 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:30:26,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:30:26,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:30:26,046 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:30:26,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:30:26,154 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:30:26,207 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:26,208 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:30:26,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:26,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-03-17 06:30:26,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:30:26,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2025-03-17 06:30:26,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2025-03-17 06:30:26,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 06:30:26,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2025-03-17 06:30:26,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:26,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:30:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:27,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632237605] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:30:27,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:30:27,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2025-03-17 06:30:27,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567721614] [2025-03-17 06:30:27,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:30:27,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-17 06:30:27,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:27,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-17 06:30:27,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2025-03-17 06:30:27,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:27,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 164 transitions, 2137 flow. Second operand has 30 states, 30 states have (on average 12.666666666666666) internal successors, (380), 30 states have internal predecessors, (380), 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) [2025-03-17 06:30:27,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:27,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:27,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:28,669 INFO L124 PetriNetUnfolderBase]: 950/1817 cut-off events. [2025-03-17 06:30:28,669 INFO L125 PetriNetUnfolderBase]: For 11649/11649 co-relation queries the response was YES. [2025-03-17 06:30:28,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8917 conditions, 1817 events. 950/1817 cut-off events. For 11649/11649 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10458 event pairs, 116 based on Foata normal form. 1/1818 useless extension candidates. Maximal degree in co-relation 8853. Up to 1094 conditions per place. [2025-03-17 06:30:28,682 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 125 selfloop transitions, 98 changer transitions 43/267 dead transitions. [2025-03-17 06:30:28,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 267 transitions, 3736 flow [2025-03-17 06:30:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-17 06:30:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-17 06:30:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 315 transitions. [2025-03-17 06:30:28,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27631578947368424 [2025-03-17 06:30:28,686 INFO L175 Difference]: Start difference. First operand has 130 places, 164 transitions, 2137 flow. Second operand 19 states and 315 transitions. [2025-03-17 06:30:28,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 267 transitions, 3736 flow [2025-03-17 06:30:28,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 267 transitions, 3668 flow, removed 9 selfloop flow, removed 6 redundant places. [2025-03-17 06:30:28,728 INFO L231 Difference]: Finished difference. Result has 147 places, 185 transitions, 2806 flow [2025-03-17 06:30:28,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2806, PETRI_PLACES=147, PETRI_TRANSITIONS=185} [2025-03-17 06:30:28,730 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 94 predicate places. [2025-03-17 06:30:28,730 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 185 transitions, 2806 flow [2025-03-17 06:30:28,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 12.666666666666666) internal successors, (380), 30 states have internal predecessors, (380), 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) [2025-03-17 06:30:28,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:28,730 INFO L206 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] [2025-03-17 06:30:28,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 06:30:28,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-17 06:30:28,931 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:28,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:28,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2014413263, now seen corresponding path program 4 times [2025-03-17 06:30:28,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:28,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976308664] [2025-03-17 06:30:28,932 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:30:28,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:28,948 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:30:28,962 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:28,963 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:30:28,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:29,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:29,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:29,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976308664] [2025-03-17 06:30:29,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976308664] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:29,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:29,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 06:30:29,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577456445] [2025-03-17 06:30:29,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:29,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:30:29,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:29,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:30:29,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:30:29,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:29,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 185 transitions, 2806 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) [2025-03-17 06:30:29,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:29,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:29,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:30,222 INFO L124 PetriNetUnfolderBase]: 813/1562 cut-off events. [2025-03-17 06:30:30,222 INFO L125 PetriNetUnfolderBase]: For 11851/11851 co-relation queries the response was YES. [2025-03-17 06:30:30,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8089 conditions, 1562 events. 813/1562 cut-off events. For 11851/11851 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8745 event pairs, 230 based on Foata normal form. 1/1563 useless extension candidates. Maximal degree in co-relation 8007. Up to 1230 conditions per place. [2025-03-17 06:30:30,233 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 122 selfloop transitions, 56 changer transitions 47/226 dead transitions. [2025-03-17 06:30:30,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 226 transitions, 3480 flow [2025-03-17 06:30:30,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 06:30:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 06:30:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 231 transitions. [2025-03-17 06:30:30,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.275 [2025-03-17 06:30:30,234 INFO L175 Difference]: Start difference. First operand has 147 places, 185 transitions, 2806 flow. Second operand 14 states and 231 transitions. [2025-03-17 06:30:30,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 226 transitions, 3480 flow [2025-03-17 06:30:30,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 226 transitions, 3431 flow, removed 13 selfloop flow, removed 6 redundant places. [2025-03-17 06:30:30,276 INFO L231 Difference]: Finished difference. Result has 153 places, 165 transitions, 2602 flow [2025-03-17 06:30:30,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2759, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2602, PETRI_PLACES=153, PETRI_TRANSITIONS=165} [2025-03-17 06:30:30,277 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2025-03-17 06:30:30,277 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 165 transitions, 2602 flow [2025-03-17 06:30:30,278 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) [2025-03-17 06:30:30,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:30,278 INFO L206 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] [2025-03-17 06:30:30,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 06:30:30,278 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:30,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:30,280 INFO L85 PathProgramCache]: Analyzing trace with hash 585085947, now seen corresponding path program 5 times [2025-03-17 06:30:30,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:30,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925789816] [2025-03-17 06:30:30,280 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:30:30,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:30,300 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:30:30,315 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:30,315 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:30:30,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:30,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:30,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925789816] [2025-03-17 06:30:30,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925789816] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:30,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:30,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 06:30:30,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820003002] [2025-03-17 06:30:30,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:30,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:30:30,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:30,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:30:30,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:30:30,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:30,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 165 transitions, 2602 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) [2025-03-17 06:30:30,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:30,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:30,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:31,395 INFO L124 PetriNetUnfolderBase]: 735/1404 cut-off events. [2025-03-17 06:30:31,395 INFO L125 PetriNetUnfolderBase]: For 11617/11617 co-relation queries the response was YES. [2025-03-17 06:30:31,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7403 conditions, 1404 events. 735/1404 cut-off events. For 11617/11617 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7695 event pairs, 217 based on Foata normal form. 1/1405 useless extension candidates. Maximal degree in co-relation 7335. Up to 928 conditions per place. [2025-03-17 06:30:31,404 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 119 selfloop transitions, 43 changer transitions 58/221 dead transitions. [2025-03-17 06:30:31,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 221 transitions, 3455 flow [2025-03-17 06:30:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 06:30:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 06:30:31,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 230 transitions. [2025-03-17 06:30:31,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27380952380952384 [2025-03-17 06:30:31,405 INFO L175 Difference]: Start difference. First operand has 153 places, 165 transitions, 2602 flow. Second operand 14 states and 230 transitions. [2025-03-17 06:30:31,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 221 transitions, 3455 flow [2025-03-17 06:30:31,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 221 transitions, 3239 flow, removed 8 selfloop flow, removed 13 redundant places. [2025-03-17 06:30:31,434 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 2069 flow [2025-03-17 06:30:31,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2395, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2069, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2025-03-17 06:30:31,435 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2025-03-17 06:30:31,435 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 2069 flow [2025-03-17 06:30:31,435 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) [2025-03-17 06:30:31,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:31,435 INFO L206 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] [2025-03-17 06:30:31,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 06:30:31,435 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:31,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash -139308349, now seen corresponding path program 6 times [2025-03-17 06:30:31,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:31,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739412620] [2025-03-17 06:30:31,436 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:30:31,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:31,449 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:30:31,454 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:31,454 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:30:31,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:31,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:31,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739412620] [2025-03-17 06:30:31,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739412620] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:31,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:31,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:30:31,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900839851] [2025-03-17 06:30:31,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:31,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:30:31,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:31,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:30:31,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:30:31,601 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2025-03-17 06:30:31,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 2069 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) [2025-03-17 06:30:31,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:31,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2025-03-17 06:30:31,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:31,891 INFO L124 PetriNetUnfolderBase]: 501/980 cut-off events. [2025-03-17 06:30:31,892 INFO L125 PetriNetUnfolderBase]: For 6968/6968 co-relation queries the response was YES. [2025-03-17 06:30:31,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 980 events. 501/980 cut-off events. For 6968/6968 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4927 event pairs, 85 based on Foata normal form. 12/992 useless extension candidates. Maximal degree in co-relation 4908. Up to 501 conditions per place. [2025-03-17 06:30:31,897 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 94 selfloop transitions, 63 changer transitions 3/167 dead transitions. [2025-03-17 06:30:31,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 167 transitions, 2414 flow [2025-03-17 06:30:31,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 06:30:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 06:30:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2025-03-17 06:30:31,898 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2025-03-17 06:30:31,898 INFO L175 Difference]: Start difference. First operand has 146 places, 142 transitions, 2069 flow. Second operand 10 states and 305 transitions. [2025-03-17 06:30:31,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 167 transitions, 2414 flow [2025-03-17 06:30:31,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 167 transitions, 2264 flow, removed 35 selfloop flow, removed 15 redundant places. [2025-03-17 06:30:31,915 INFO L231 Difference]: Finished difference. Result has 135 places, 138 transitions, 1983 flow [2025-03-17 06:30:31,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1983, PETRI_PLACES=135, PETRI_TRANSITIONS=138} [2025-03-17 06:30:31,916 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 82 predicate places. [2025-03-17 06:30:31,916 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 138 transitions, 1983 flow [2025-03-17 06:30:31,916 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) [2025-03-17 06:30:31,916 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:31,916 INFO L206 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] [2025-03-17 06:30:31,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 06:30:31,917 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:31,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:31,917 INFO L85 PathProgramCache]: Analyzing trace with hash 147137579, now seen corresponding path program 7 times [2025-03-17 06:30:31,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:31,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802702508] [2025-03-17 06:30:31,917 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:30:31,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:31,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:30:31,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:31,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:30:31,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:32,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:32,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802702508] [2025-03-17 06:30:32,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802702508] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:32,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:32,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 06:30:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225691329] [2025-03-17 06:30:32,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:32,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:30:32,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:32,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:30:32,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:30:32,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:32,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 138 transitions, 1983 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) [2025-03-17 06:30:32,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:32,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:32,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:32,942 INFO L124 PetriNetUnfolderBase]: 498/969 cut-off events. [2025-03-17 06:30:32,943 INFO L125 PetriNetUnfolderBase]: For 6693/6693 co-relation queries the response was YES. [2025-03-17 06:30:32,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4883 conditions, 969 events. 498/969 cut-off events. For 6693/6693 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4802 event pairs, 127 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 4787. Up to 647 conditions per place. [2025-03-17 06:30:32,949 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 97 selfloop transitions, 32 changer transitions 47/177 dead transitions. [2025-03-17 06:30:32,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 177 transitions, 2544 flow [2025-03-17 06:30:32,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:30:32,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 06:30:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 239 transitions. [2025-03-17 06:30:32,950 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26555555555555554 [2025-03-17 06:30:32,950 INFO L175 Difference]: Start difference. First operand has 135 places, 138 transitions, 1983 flow. Second operand 15 states and 239 transitions. [2025-03-17 06:30:32,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 177 transitions, 2544 flow [2025-03-17 06:30:32,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 177 transitions, 2424 flow, removed 10 selfloop flow, removed 5 redundant places. [2025-03-17 06:30:32,971 INFO L231 Difference]: Finished difference. Result has 145 places, 114 transitions, 1512 flow [2025-03-17 06:30:32,972 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1512, PETRI_PLACES=145, PETRI_TRANSITIONS=114} [2025-03-17 06:30:32,972 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2025-03-17 06:30:32,973 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 114 transitions, 1512 flow [2025-03-17 06:30:32,973 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) [2025-03-17 06:30:32,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:32,973 INFO L206 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] [2025-03-17 06:30:32,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 06:30:32,973 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:32,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash 182226395, now seen corresponding path program 8 times [2025-03-17 06:30:32,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:32,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69111957] [2025-03-17 06:30:32,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:30:32,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:32,989 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:30:32,996 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:32,996 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:30:32,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:33,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:33,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69111957] [2025-03-17 06:30:33,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69111957] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:33,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:33,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:30:33,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608179817] [2025-03-17 06:30:33,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:33,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:30:33,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:33,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:30:33,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:30:33,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2025-03-17 06:30:33,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 114 transitions, 1512 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) [2025-03-17 06:30:33,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:33,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2025-03-17 06:30:33,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:33,488 INFO L124 PetriNetUnfolderBase]: 433/856 cut-off events. [2025-03-17 06:30:33,489 INFO L125 PetriNetUnfolderBase]: For 4956/4956 co-relation queries the response was YES. [2025-03-17 06:30:33,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4087 conditions, 856 events. 433/856 cut-off events. For 4956/4956 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4194 event pairs, 45 based on Foata normal form. 12/868 useless extension candidates. Maximal degree in co-relation 4031. Up to 366 conditions per place. [2025-03-17 06:30:33,493 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 84 selfloop transitions, 61 changer transitions 1/153 dead transitions. [2025-03-17 06:30:33,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 153 transitions, 2020 flow [2025-03-17 06:30:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:30:33,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:30:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 352 transitions. [2025-03-17 06:30:33,494 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2025-03-17 06:30:33,494 INFO L175 Difference]: Start difference. First operand has 145 places, 114 transitions, 1512 flow. Second operand 12 states and 352 transitions. [2025-03-17 06:30:33,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 153 transitions, 2020 flow [2025-03-17 06:30:33,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 153 transitions, 1809 flow, removed 34 selfloop flow, removed 23 redundant places. [2025-03-17 06:30:33,509 INFO L231 Difference]: Finished difference. Result has 117 places, 121 transitions, 1553 flow [2025-03-17 06:30:33,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1553, PETRI_PLACES=117, PETRI_TRANSITIONS=121} [2025-03-17 06:30:33,510 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2025-03-17 06:30:33,510 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 121 transitions, 1553 flow [2025-03-17 06:30:33,510 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) [2025-03-17 06:30:33,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:33,510 INFO L206 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] [2025-03-17 06:30:33,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 06:30:33,510 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:33,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:33,511 INFO L85 PathProgramCache]: Analyzing trace with hash 646088661, now seen corresponding path program 9 times [2025-03-17 06:30:33,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:33,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187803624] [2025-03-17 06:30:33,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:30:33,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:33,523 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:30:33,532 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:33,533 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:30:33,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:34,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:34,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187803624] [2025-03-17 06:30:34,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187803624] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:30:34,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414340387] [2025-03-17 06:30:34,035 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:30:34,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:30:34,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:30:34,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:30:34,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:30:34,144 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:30:34,174 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:34,174 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:30:34,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:34,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-03-17 06:30:34,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:30:34,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2025-03-17 06:30:34,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2025-03-17 06:30:34,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 06:30:34,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2025-03-17 06:30:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:34,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:30:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:34,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414340387] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:30:34,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:30:34,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2025-03-17 06:30:34,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702232077] [2025-03-17 06:30:34,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:30:34,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-17 06:30:34,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:34,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-17 06:30:34,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2025-03-17 06:30:34,882 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:34,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 121 transitions, 1553 flow. Second operand has 31 states, 31 states have (on average 12.516129032258064) internal successors, (388), 31 states have internal predecessors, (388), 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) [2025-03-17 06:30:34,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:34,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:34,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:35,758 INFO L124 PetriNetUnfolderBase]: 466/941 cut-off events. [2025-03-17 06:30:35,758 INFO L125 PetriNetUnfolderBase]: For 5276/5276 co-relation queries the response was YES. [2025-03-17 06:30:35,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4470 conditions, 941 events. 466/941 cut-off events. For 5276/5276 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4707 event pairs, 44 based on Foata normal form. 2/943 useless extension candidates. Maximal degree in co-relation 4270. Up to 513 conditions per place. [2025-03-17 06:30:35,764 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 79 selfloop transitions, 52 changer transitions 42/174 dead transitions. [2025-03-17 06:30:35,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 174 transitions, 2301 flow [2025-03-17 06:30:35,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-17 06:30:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-17 06:30:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 286 transitions. [2025-03-17 06:30:35,766 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.25087719298245614 [2025-03-17 06:30:35,766 INFO L175 Difference]: Start difference. First operand has 117 places, 121 transitions, 1553 flow. Second operand 19 states and 286 transitions. [2025-03-17 06:30:35,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 174 transitions, 2301 flow [2025-03-17 06:30:35,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 174 transitions, 2196 flow, removed 21 selfloop flow, removed 6 redundant places. [2025-03-17 06:30:35,784 INFO L231 Difference]: Finished difference. Result has 131 places, 111 transitions, 1457 flow [2025-03-17 06:30:35,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1457, PETRI_PLACES=131, PETRI_TRANSITIONS=111} [2025-03-17 06:30:35,784 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2025-03-17 06:30:35,784 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 111 transitions, 1457 flow [2025-03-17 06:30:35,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 12.516129032258064) internal successors, (388), 31 states have internal predecessors, (388), 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) [2025-03-17 06:30:35,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:35,785 INFO L206 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] [2025-03-17 06:30:35,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 06:30:35,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:30:35,989 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:35,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:35,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1705984951, now seen corresponding path program 10 times [2025-03-17 06:30:35,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:35,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788484426] [2025-03-17 06:30:35,990 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:30:35,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:36,006 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:30:36,016 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:36,016 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:30:36,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:36,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:36,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788484426] [2025-03-17 06:30:36,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788484426] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:30:36,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417064492] [2025-03-17 06:30:36,508 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:30:36,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:30:36,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:30:36,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:30:36,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:30:36,632 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:30:36,663 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:36,663 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:30:36,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:36,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-03-17 06:30:36,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:30:36,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2025-03-17 06:30:36,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2025-03-17 06:30:36,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 06:30:36,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2025-03-17 06:30:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:37,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:30:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:37,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417064492] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:30:37,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:30:37,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 28 [2025-03-17 06:30:37,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785034553] [2025-03-17 06:30:37,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:30:37,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 06:30:37,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:37,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 06:30:37,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2025-03-17 06:30:37,333 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:37,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 111 transitions, 1457 flow. Second operand has 28 states, 28 states have (on average 13.107142857142858) internal successors, (367), 28 states have internal predecessors, (367), 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) [2025-03-17 06:30:37,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:37,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:37,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:38,129 INFO L124 PetriNetUnfolderBase]: 388/775 cut-off events. [2025-03-17 06:30:38,130 INFO L125 PetriNetUnfolderBase]: For 4499/4499 co-relation queries the response was YES. [2025-03-17 06:30:38,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3711 conditions, 775 events. 388/775 cut-off events. For 4499/4499 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3662 event pairs, 110 based on Foata normal form. 2/777 useless extension candidates. Maximal degree in co-relation 3601. Up to 523 conditions per place. [2025-03-17 06:30:38,133 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 66 selfloop transitions, 23 changer transitions 51/141 dead transitions. [2025-03-17 06:30:38,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 141 transitions, 1905 flow [2025-03-17 06:30:38,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 06:30:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 06:30:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 230 transitions. [2025-03-17 06:30:38,134 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.25555555555555554 [2025-03-17 06:30:38,134 INFO L175 Difference]: Start difference. First operand has 131 places, 111 transitions, 1457 flow. Second operand 15 states and 230 transitions. [2025-03-17 06:30:38,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 141 transitions, 1905 flow [2025-03-17 06:30:38,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 141 transitions, 1718 flow, removed 6 selfloop flow, removed 20 redundant places. [2025-03-17 06:30:38,146 INFO L231 Difference]: Finished difference. Result has 122 places, 80 transitions, 879 flow [2025-03-17 06:30:38,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=879, PETRI_PLACES=122, PETRI_TRANSITIONS=80} [2025-03-17 06:30:38,147 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 69 predicate places. [2025-03-17 06:30:38,147 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 80 transitions, 879 flow [2025-03-17 06:30:38,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.107142857142858) internal successors, (367), 28 states have internal predecessors, (367), 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) [2025-03-17 06:30:38,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:38,147 INFO L206 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] [2025-03-17 06:30:38,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 06:30:38,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:30:38,348 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:38,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:38,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1678982637, now seen corresponding path program 11 times [2025-03-17 06:30:38,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:38,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657943367] [2025-03-17 06:30:38,348 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:30:38,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:38,361 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:30:38,367 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:38,367 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:30:38,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:38,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:38,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657943367] [2025-03-17 06:30:38,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657943367] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:30:38,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:30:38,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:30:38,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861296230] [2025-03-17 06:30:38,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:30:38,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:30:38,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:38,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:30:38,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:30:38,559 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2025-03-17 06:30:38,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 80 transitions, 879 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) [2025-03-17 06:30:38,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:38,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2025-03-17 06:30:38,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:38,763 INFO L124 PetriNetUnfolderBase]: 251/510 cut-off events. [2025-03-17 06:30:38,763 INFO L125 PetriNetUnfolderBase]: For 2598/2598 co-relation queries the response was YES. [2025-03-17 06:30:38,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 510 events. 251/510 cut-off events. For 2598/2598 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2182 event pairs, 36 based on Foata normal form. 10/520 useless extension candidates. Maximal degree in co-relation 2270. Up to 267 conditions per place. [2025-03-17 06:30:38,765 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 55 selfloop transitions, 38 changer transitions 3/103 dead transitions. [2025-03-17 06:30:38,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 103 transitions, 1228 flow [2025-03-17 06:30:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 06:30:38,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 06:30:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 327 transitions. [2025-03-17 06:30:38,766 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2025-03-17 06:30:38,766 INFO L175 Difference]: Start difference. First operand has 122 places, 80 transitions, 879 flow. Second operand 12 states and 327 transitions. [2025-03-17 06:30:38,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 103 transitions, 1228 flow [2025-03-17 06:30:38,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 103 transitions, 1025 flow, removed 21 selfloop flow, removed 25 redundant places. [2025-03-17 06:30:38,772 INFO L231 Difference]: Finished difference. Result has 98 places, 84 transitions, 859 flow [2025-03-17 06:30:38,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=859, PETRI_PLACES=98, PETRI_TRANSITIONS=84} [2025-03-17 06:30:38,773 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2025-03-17 06:30:38,773 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 84 transitions, 859 flow [2025-03-17 06:30:38,773 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) [2025-03-17 06:30:38,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:38,773 INFO L206 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] [2025-03-17 06:30:38,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 06:30:38,773 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:38,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:38,773 INFO L85 PathProgramCache]: Analyzing trace with hash -163138113, now seen corresponding path program 12 times [2025-03-17 06:30:38,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:38,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369521518] [2025-03-17 06:30:38,773 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:30:38,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:38,785 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:30:38,791 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:38,791 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:30:38,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:39,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:39,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369521518] [2025-03-17 06:30:39,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369521518] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:30:39,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013238524] [2025-03-17 06:30:39,219 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:30:39,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:30:39,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:30:39,221 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:30:39,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 06:30:39,327 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 2 equivalence classes. [2025-03-17 06:30:39,353 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:39,353 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-17 06:30:39,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:39,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-03-17 06:30:39,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:30:39,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2025-03-17 06:30:39,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2025-03-17 06:30:39,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 06:30:39,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2025-03-17 06:30:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:39,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:30:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:40,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013238524] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:30:40,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:30:40,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2025-03-17 06:30:40,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923095088] [2025-03-17 06:30:40,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:30:40,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-17 06:30:40,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:40,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-17 06:30:40,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2025-03-17 06:30:40,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:40,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 84 transitions, 859 flow. Second operand has 30 states, 30 states have (on average 12.566666666666666) internal successors, (377), 30 states have internal predecessors, (377), 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) [2025-03-17 06:30:40,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:40,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:40,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:40,841 INFO L124 PetriNetUnfolderBase]: 248/499 cut-off events. [2025-03-17 06:30:40,841 INFO L125 PetriNetUnfolderBase]: For 2201/2201 co-relation queries the response was YES. [2025-03-17 06:30:40,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 499 events. 248/499 cut-off events. For 2201/2201 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2060 event pairs, 12 based on Foata normal form. 2/501 useless extension candidates. Maximal degree in co-relation 2249. Up to 125 conditions per place. [2025-03-17 06:30:40,843 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 40 selfloop transitions, 22 changer transitions 56/119 dead transitions. [2025-03-17 06:30:40,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 1272 flow [2025-03-17 06:30:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-17 06:30:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-17 06:30:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 267 transitions. [2025-03-17 06:30:40,846 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.24722222222222223 [2025-03-17 06:30:40,846 INFO L175 Difference]: Start difference. First operand has 98 places, 84 transitions, 859 flow. Second operand 18 states and 267 transitions. [2025-03-17 06:30:40,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 119 transitions, 1272 flow [2025-03-17 06:30:40,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 119 transitions, 1136 flow, removed 22 selfloop flow, removed 10 redundant places. [2025-03-17 06:30:40,852 INFO L231 Difference]: Finished difference. Result has 105 places, 53 transitions, 447 flow [2025-03-17 06:30:40,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=447, PETRI_PLACES=105, PETRI_TRANSITIONS=53} [2025-03-17 06:30:40,853 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 52 predicate places. [2025-03-17 06:30:40,853 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 53 transitions, 447 flow [2025-03-17 06:30:40,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 12.566666666666666) internal successors, (377), 30 states have internal predecessors, (377), 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) [2025-03-17 06:30:40,853 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:30:40,853 INFO L206 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] [2025-03-17 06:30:40,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 06:30:41,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:30:41,054 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-03-17 06:30:41,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:30:41,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1036806545, now seen corresponding path program 13 times [2025-03-17 06:30:41,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:30:41,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531275257] [2025-03-17 06:30:41,054 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:30:41,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:30:41,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:30:41,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:41,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:30:41,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:41,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:30:41,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531275257] [2025-03-17 06:30:41,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531275257] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:30:41,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462308596] [2025-03-17 06:30:41,585 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:30:41,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:30:41,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:30:41,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:30:41,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 06:30:41,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 06:30:41,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:30:41,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:30:41,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:30:41,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-03-17 06:30:41,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:30:41,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2025-03-17 06:30:41,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2025-03-17 06:30:42,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 06:30:42,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2025-03-17 06:30:42,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:42,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:30:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:30:42,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462308596] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:30:42,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:30:42,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2025-03-17 06:30:42,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321923189] [2025-03-17 06:30:42,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:30:42,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-17 06:30:42,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:30:42,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-17 06:30:42,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2025-03-17 06:30:42,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2025-03-17 06:30:42,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 53 transitions, 447 flow. Second operand has 30 states, 30 states have (on average 12.733333333333333) internal successors, (382), 30 states have internal predecessors, (382), 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) [2025-03-17 06:30:42,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:30:42,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2025-03-17 06:30:42,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:30:42,967 INFO L124 PetriNetUnfolderBase]: 104/219 cut-off events. [2025-03-17 06:30:42,967 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2025-03-17 06:30:42,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 219 events. 104/219 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 663 event pairs, 4 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 955. Up to 63 conditions per place. [2025-03-17 06:30:42,968 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2025-03-17 06:30:42,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 69 transitions, 614 flow [2025-03-17 06:30:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 06:30:42,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-17 06:30:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 222 transitions. [2025-03-17 06:30:42,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.23125 [2025-03-17 06:30:42,969 INFO L175 Difference]: Start difference. First operand has 105 places, 53 transitions, 447 flow. Second operand 16 states and 222 transitions. [2025-03-17 06:30:42,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 69 transitions, 614 flow [2025-03-17 06:30:42,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 69 transitions, 448 flow, removed 16 selfloop flow, removed 28 redundant places. [2025-03-17 06:30:42,971 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2025-03-17 06:30:42,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2025-03-17 06:30:42,972 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2025-03-17 06:30:42,972 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2025-03-17 06:30:42,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 12.733333333333333) internal successors, (382), 30 states have internal predecessors, (382), 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) [2025-03-17 06:30:42,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2025-03-17 06:30:42,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2025-03-17 06:30:42,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2025-03-17 06:30:42,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2025-03-17 06:30:42,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2025-03-17 06:30:42,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2025-03-17 06:30:42,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2025-03-17 06:30:42,976 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2025-03-17 06:30:42,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 06:30:43,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-03-17 06:30:43,177 INFO L422 BasicCegarLoop]: Path program histogram: [13, 6, 1, 1, 1, 1] [2025-03-17 06:30:43,180 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 06:30:43,180 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 06:30:43,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:30:43 BasicIcfg [2025-03-17 06:30:43,183 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 06:30:43,183 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 06:30:43,183 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 06:30:43,184 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 06:30:43,184 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:30:14" (3/4) ... [2025-03-17 06:30:43,185 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 06:30:43,188 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure my_callback [2025-03-17 06:30:43,193 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 86 nodes and edges [2025-03-17 06:30:43,194 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-03-17 06:30:43,194 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-17 06:30:43,194 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-17 06:30:43,261 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 06:30:43,261 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 06:30:43,261 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 06:30:43,262 INFO L158 Benchmark]: Toolchain (without parser) took 29656.58ms. Allocated memory was 142.6MB in the beginning and 788.5MB in the end (delta: 645.9MB). Free memory was 102.2MB in the beginning and 661.8MB in the end (delta: -559.7MB). Peak memory consumption was 86.0MB. Max. memory is 16.1GB. [2025-03-17 06:30:43,262 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:30:43,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.31ms. Allocated memory is still 142.6MB. Free memory was 102.2MB in the beginning and 71.5MB in the end (delta: 30.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 06:30:43,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.76ms. Allocated memory is still 142.6MB. Free memory was 71.5MB in the beginning and 68.9MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:30:43,262 INFO L158 Benchmark]: Boogie Preprocessor took 54.59ms. Allocated memory is still 142.6MB. Free memory was 68.9MB in the beginning and 65.7MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 06:30:43,262 INFO L158 Benchmark]: IcfgBuilder took 571.72ms. Allocated memory is still 142.6MB. Free memory was 65.7MB in the beginning and 94.1MB in the end (delta: -28.4MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2025-03-17 06:30:43,262 INFO L158 Benchmark]: TraceAbstraction took 28457.12ms. Allocated memory was 142.6MB in the beginning and 788.5MB in the end (delta: 645.9MB). Free memory was 93.3MB in the beginning and 668.8MB in the end (delta: -575.5MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. [2025-03-17 06:30:43,263 INFO L158 Benchmark]: Witness Printer took 77.65ms. Allocated memory is still 788.5MB. Free memory was 668.8MB in the beginning and 661.8MB in the end (delta: 7.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:30:43,264 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.31ms. Allocated memory is still 142.6MB. Free memory was 102.2MB in the beginning and 71.5MB in the end (delta: 30.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.76ms. Allocated memory is still 142.6MB. Free memory was 71.5MB in the beginning and 68.9MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.59ms. Allocated memory is still 142.6MB. Free memory was 68.9MB in the beginning and 65.7MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 571.72ms. Allocated memory is still 142.6MB. Free memory was 65.7MB in the beginning and 94.1MB in the end (delta: -28.4MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. * TraceAbstraction took 28457.12ms. Allocated memory was 142.6MB in the beginning and 788.5MB in the end (delta: 645.9MB). Free memory was 93.3MB in the beginning and 668.8MB in the end (delta: -575.5MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. * Witness Printer took 77.65ms. Allocated memory is still 788.5MB. Free memory was 668.8MB in the beginning and 661.8MB in the end (delta: 7.0MB). There was no memory consumed. 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, 69 edges, 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: 28.3s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2426 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2328 mSDsluCounter, 2349 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2308 mSDsCounter, 282 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10354 IncrementalHoareTripleChecker+Invalid, 10636 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 282 mSolverCounterUnsat, 41 mSDtfsCounter, 10354 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 685 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 416 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2323 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2806occurred in iteration=13, InterpolantAutomatonStates: 279, 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, 0.5s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 777 NumberOfCodeBlocks, 777 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 899 ConstructedInterpolants, 0 QuantifiedInterpolants, 15022 SizeOfPredicates, 147 NumberOfNonLiveVariables, 1600 ConjunctsInSsa, 325 ConjunctsInUnsatCore, 33 InterpolantComputations, 18 PerfectInterpolantSequences, 0/15 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 06:30:43,279 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