./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 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/goblint-regression/13-privatized_24-multiple-protecting_true.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 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:37:41,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:37:41,965 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:37:41,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:37:41,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:37:41,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:37:41,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:37:41,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:37:41,994 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:37:41,994 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:37:41,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:37:41,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:37:41,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:37:41,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:37:41,995 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:37:41,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:37:41,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:37:41,995 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:37:41,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:37:41,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:37:41,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:37:41,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:37:41,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:37:41,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:37:41,997 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:37:41,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:37:41,997 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:37:41,997 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:37:41,997 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:37:41,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:37:41,997 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:37:41,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:37:41,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:37:41,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:37:41,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:37:41,998 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:37:41,998 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:37:41,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:37:41,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:37:41,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:37:41,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:37:41,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:37:41,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:37:41,999 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 -> 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf [2025-03-13 21:37:42,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:37:42,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:37:42,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:37:42,244 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:37:42,244 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:37:42,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2025-03-13 21:37:43,387 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa14012ab/88e59f09f6bd4ce1a8332e20916e2704/FLAGd4c8adddd [2025-03-13 21:37:43,654 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:37:43,655 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2025-03-13 21:37:43,663 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa14012ab/88e59f09f6bd4ce1a8332e20916e2704/FLAGd4c8adddd [2025-03-13 21:37:43,676 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa14012ab/88e59f09f6bd4ce1a8332e20916e2704 [2025-03-13 21:37:43,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:37:43,679 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:37:43,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:37:43,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:37:43,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:37:43,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:37:43" (1/1) ... [2025-03-13 21:37:43,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aafbd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:43, skipping insertion in model container [2025-03-13 21:37:43,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:37:43" (1/1) ... [2025-03-13 21:37:43,710 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:37:43,820 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/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2025-03-13 21:37:43,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:37:43,967 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:37:43,975 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/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2025-03-13 21:37:44,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:37:44,036 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:37:44,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44 WrapperNode [2025-03-13 21:37:44,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:37:44,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:37:44,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:37:44,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:37:44,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (1/1) ... [2025-03-13 21:37:44,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (1/1) ... [2025-03-13 21:37:44,068 INFO L138 Inliner]: procedures = 162, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 101 [2025-03-13 21:37:44,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:37:44,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:37:44,069 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:37:44,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:37:44,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (1/1) ... [2025-03-13 21:37:44,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (1/1) ... [2025-03-13 21:37:44,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (1/1) ... [2025-03-13 21:37:44,089 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 5, 5]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0]. [2025-03-13 21:37:44,090 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (1/1) ... [2025-03-13 21:37:44,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (1/1) ... [2025-03-13 21:37:44,094 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (1/1) ... [2025-03-13 21:37:44,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (1/1) ... [2025-03-13 21:37:44,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (1/1) ... [2025-03-13 21:37:44,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (1/1) ... [2025-03-13 21:37:44,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:37:44,099 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:37:44,099 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:37:44,099 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:37:44,100 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (1/1) ... [2025-03-13 21:37:44,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:37:44,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:37:44,124 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) [2025-03-13 21:37:44,126 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 [2025-03-13 21:37:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-13 21:37:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:37:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-13 21:37:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-13 21:37:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:37:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-13 21:37:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-13 21:37:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-13 21:37:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-13 21:37:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:37:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:37:44,144 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:37:44,267 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:37:44,268 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:37:44,488 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:37:44,489 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:37:44,489 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:37:44,656 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:37:44,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:37:44 BoogieIcfgContainer [2025-03-13 21:37:44,657 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:37:44,659 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:37:44,659 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:37:44,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:37:44,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:37:43" (1/3) ... [2025-03-13 21:37:44,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bbe58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:37:44, skipping insertion in model container [2025-03-13 21:37:44,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:37:44" (2/3) ... [2025-03-13 21:37:44,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bbe58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:37:44, skipping insertion in model container [2025-03-13 21:37:44,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:37:44" (3/3) ... [2025-03-13 21:37:44,667 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2025-03-13 21:37:44,679 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:37:44,680 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_24-multiple-protecting_true.i that has 2 procedures, 72 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2025-03-13 21:37:44,681 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:37:44,744 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-13 21:37:44,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 75 transitions, 157 flow [2025-03-13 21:37:44,811 INFO L124 PetriNetUnfolderBase]: 4/74 cut-off events. [2025-03-13 21:37:44,814 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-13 21:37:44,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 74 events. 4/74 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2025-03-13 21:37:44,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 75 transitions, 157 flow [2025-03-13 21:37:44,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 65 transitions, 133 flow [2025-03-13 21:37:44,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:37:44,840 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;@61b94bb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:37:44,842 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-13 21:37:44,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:37:44,851 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2025-03-13 21:37:44,851 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:37:44,851 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:37:44,852 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:37:44,852 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-13 21:37:44,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:37:44,857 INFO L85 PathProgramCache]: Analyzing trace with hash -84522680, now seen corresponding path program 1 times [2025-03-13 21:37:44,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:37:44,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621635383] [2025-03-13 21:37:44,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:37:44,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:37:44,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-13 21:37:44,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-13 21:37:44,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:37:44,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:37:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:37:45,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:37:45,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621635383] [2025-03-13 21:37:45,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621635383] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:37:45,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:37:45,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 21:37:45,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625073290] [2025-03-13 21:37:45,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:37:45,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-13 21:37:45,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:37:45,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-13 21:37:45,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-13 21:37:45,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 75 [2025-03-13 21:37:45,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2025-03-13 21:37:45,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:37:45,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 75 [2025-03-13 21:37:45,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:37:45,554 INFO L124 PetriNetUnfolderBase]: 443/1141 cut-off events. [2025-03-13 21:37:45,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:37:45,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 1141 events. 443/1141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6264 event pairs, 116 based on Foata normal form. 66/1153 useless extension candidates. Maximal degree in co-relation 2085. Up to 670 conditions per place. [2025-03-13 21:37:45,564 INFO L140 encePairwiseOnDemand]: 58/75 looper letters, 69 selfloop transitions, 15 changer transitions 1/103 dead transitions. [2025-03-13 21:37:45,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 103 transitions, 379 flow [2025-03-13 21:37:45,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:37:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:37:45,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2025-03-13 21:37:45,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-03-13 21:37:45,577 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 133 flow. Second operand 5 states and 200 transitions. [2025-03-13 21:37:45,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 103 transitions, 379 flow [2025-03-13 21:37:45,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 103 transitions, 378 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-13 21:37:45,586 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 226 flow [2025-03-13 21:37:45,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2025-03-13 21:37:45,591 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2025-03-13 21:37:45,591 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 226 flow [2025-03-13 21:37:45,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2025-03-13 21:37:45,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:37:45,592 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:37:45,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:37:45,592 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-13 21:37:45,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:37:45,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1822853061, now seen corresponding path program 1 times [2025-03-13 21:37:45,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:37:45,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351934785] [2025-03-13 21:37:45,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:37:45,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:37:45,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-13 21:37:45,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-13 21:37:45,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:37:45,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:37:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:37:45,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:37:45,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351934785] [2025-03-13 21:37:45,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351934785] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:37:45,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:37:45,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 21:37:45,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145078567] [2025-03-13 21:37:45,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:37:45,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-13 21:37:45,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:37:45,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-13 21:37:45,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-13 21:37:45,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 75 [2025-03-13 21:37:45,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:37:45,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:37:45,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 75 [2025-03-13 21:37:45,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:37:45,892 INFO L124 PetriNetUnfolderBase]: 198/660 cut-off events. [2025-03-13 21:37:45,892 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2025-03-13 21:37:45,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 660 events. 198/660 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3536 event pairs, 24 based on Foata normal form. 21/678 useless extension candidates. Maximal degree in co-relation 1367. Up to 317 conditions per place. [2025-03-13 21:37:45,896 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 62 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2025-03-13 21:37:45,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 96 transitions, 426 flow [2025-03-13 21:37:45,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-13 21:37:45,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-13 21:37:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2025-03-13 21:37:45,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6033333333333334 [2025-03-13 21:37:45,897 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 226 flow. Second operand 4 states and 181 transitions. [2025-03-13 21:37:45,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 96 transitions, 426 flow [2025-03-13 21:37:45,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 96 transitions, 409 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-13 21:37:45,902 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 231 flow [2025-03-13 21:37:45,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2025-03-13 21:37:45,903 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 10 predicate places. [2025-03-13 21:37:45,903 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 231 flow [2025-03-13 21:37:45,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:37:45,903 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:37:45,903 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] [2025-03-13 21:37:45,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:37:45,905 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-13 21:37:45,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:37:45,906 INFO L85 PathProgramCache]: Analyzing trace with hash 829592130, now seen corresponding path program 1 times [2025-03-13 21:37:45,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:37:45,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266111670] [2025-03-13 21:37:45,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:37:45,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:37:45,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-13 21:37:45,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:37:45,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:37:45,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:37:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:37:46,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:37:46,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266111670] [2025-03-13 21:37:46,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266111670] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:37:46,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:37:46,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:37:46,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084989215] [2025-03-13 21:37:46,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:37:46,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:37:46,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:37:46,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:37:46,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:37:46,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 75 [2025-03-13 21:37:46,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2025-03-13 21:37:46,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:37:46,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 75 [2025-03-13 21:37:46,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:37:46,224 INFO L124 PetriNetUnfolderBase]: 251/704 cut-off events. [2025-03-13 21:37:46,224 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2025-03-13 21:37:46,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1581 conditions, 704 events. 251/704 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3538 event pairs, 160 based on Foata normal form. 36/736 useless extension candidates. Maximal degree in co-relation 1565. Up to 434 conditions per place. [2025-03-13 21:37:46,227 INFO L140 encePairwiseOnDemand]: 62/75 looper letters, 48 selfloop transitions, 13 changer transitions 7/84 dead transitions. [2025-03-13 21:37:46,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 84 transitions, 397 flow [2025-03-13 21:37:46,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:37:46,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:37:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2025-03-13 21:37:46,230 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44 [2025-03-13 21:37:46,230 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 231 flow. Second operand 5 states and 165 transitions. [2025-03-13 21:37:46,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 84 transitions, 397 flow [2025-03-13 21:37:46,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 84 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-13 21:37:46,232 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 251 flow [2025-03-13 21:37:46,232 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2025-03-13 21:37:46,235 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 10 predicate places. [2025-03-13 21:37:46,235 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 251 flow [2025-03-13 21:37:46,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2025-03-13 21:37:46,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:37:46,236 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] [2025-03-13 21:37:46,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:37:46,236 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-13 21:37:46,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:37:46,236 INFO L85 PathProgramCache]: Analyzing trace with hash 136424199, now seen corresponding path program 1 times [2025-03-13 21:37:46,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:37:46,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513055978] [2025-03-13 21:37:46,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:37:46,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:37:46,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-13 21:37:46,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-13 21:37:46,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:37:46,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:37:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:37:46,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:37:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513055978] [2025-03-13 21:37:46,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513055978] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:37:46,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:37:46,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 21:37:46,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493017061] [2025-03-13 21:37:46,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:37:46,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-13 21:37:46,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:37:46,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-13 21:37:46,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-13 21:37:46,345 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 75 [2025-03-13 21:37:46,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 251 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:37:46,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:37:46,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 75 [2025-03-13 21:37:46,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:37:46,486 INFO L124 PetriNetUnfolderBase]: 194/597 cut-off events. [2025-03-13 21:37:46,486 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2025-03-13 21:37:46,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1434 conditions, 597 events. 194/597 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2863 event pairs, 76 based on Foata normal form. 11/604 useless extension candidates. Maximal degree in co-relation 1416. Up to 281 conditions per place. [2025-03-13 21:37:46,489 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 57 selfloop transitions, 17 changer transitions 1/91 dead transitions. [2025-03-13 21:37:46,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 91 transitions, 493 flow [2025-03-13 21:37:46,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:37:46,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:37:46,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-03-13 21:37:46,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-03-13 21:37:46,490 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 251 flow. Second operand 5 states and 175 transitions. [2025-03-13 21:37:46,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 91 transitions, 493 flow [2025-03-13 21:37:46,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 439 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-13 21:37:46,495 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 305 flow [2025-03-13 21:37:46,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2025-03-13 21:37:46,496 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2025-03-13 21:37:46,496 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 305 flow [2025-03-13 21:37:46,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:37:46,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:37:46,497 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, 1, 1, 1, 1, 1] [2025-03-13 21:37:46,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:37:46,497 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-13 21:37:46,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:37:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash 627920147, now seen corresponding path program 1 times [2025-03-13 21:37:46,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:37:46,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044348442] [2025-03-13 21:37:46,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:37:46,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:37:46,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-13 21:37:46,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-13 21:37:46,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:37:46,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:37:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:37:46,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:37:46,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044348442] [2025-03-13 21:37:46,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044348442] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:37:46,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:37:46,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:37:46,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215362065] [2025-03-13 21:37:46,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:37:46,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:37:46,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:37:46,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:37:46,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:37:46,631 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 75 [2025-03-13 21:37:46,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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) [2025-03-13 21:37:46,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:37:46,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 75 [2025-03-13 21:37:46,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:37:46,731 INFO L124 PetriNetUnfolderBase]: 89/373 cut-off events. [2025-03-13 21:37:46,731 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2025-03-13 21:37:46,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 373 events. 89/373 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1600 event pairs, 23 based on Foata normal form. 41/406 useless extension candidates. Maximal degree in co-relation 947. Up to 168 conditions per place. [2025-03-13 21:37:46,735 INFO L140 encePairwiseOnDemand]: 58/75 looper letters, 41 selfloop transitions, 17 changer transitions 3/86 dead transitions. [2025-03-13 21:37:46,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 86 transitions, 489 flow [2025-03-13 21:37:46,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-13 21:37:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-13 21:37:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2025-03-13 21:37:46,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2025-03-13 21:37:46,736 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 305 flow. Second operand 4 states and 176 transitions. [2025-03-13 21:37:46,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 86 transitions, 489 flow [2025-03-13 21:37:46,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 481 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-13 21:37:46,742 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 360 flow [2025-03-13 21:37:46,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=360, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2025-03-13 21:37:46,742 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2025-03-13 21:37:46,742 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 360 flow [2025-03-13 21:37:46,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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) [2025-03-13 21:37:46,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:37:46,742 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, 1, 1, 1, 1, 1, 1] [2025-03-13 21:37:46,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:37:46,743 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-13 21:37:46,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:37:46,743 INFO L85 PathProgramCache]: Analyzing trace with hash 125563497, now seen corresponding path program 1 times [2025-03-13 21:37:46,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:37:46,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212621696] [2025-03-13 21:37:46,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:37:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:37:46,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-13 21:37:46,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-13 21:37:46,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:37:46,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:37:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:37:46,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:37:46,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212621696] [2025-03-13 21:37:46,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212621696] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:37:46,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:37:46,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:37:46,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906955545] [2025-03-13 21:37:46,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:37:46,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:37:46,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:37:46,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:37:46,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:37:46,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 75 [2025-03-13 21:37:46,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:37:46,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:37:46,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 75 [2025-03-13 21:37:46,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:37:47,049 INFO L124 PetriNetUnfolderBase]: 85/346 cut-off events. [2025-03-13 21:37:47,049 INFO L125 PetriNetUnfolderBase]: For 311/313 co-relation queries the response was YES. [2025-03-13 21:37:47,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 346 events. 85/346 cut-off events. For 311/313 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1451 event pairs, 38 based on Foata normal form. 4/346 useless extension candidates. Maximal degree in co-relation 987. Up to 233 conditions per place. [2025-03-13 21:37:47,051 INFO L140 encePairwiseOnDemand]: 71/75 looper letters, 43 selfloop transitions, 4 changer transitions 14/79 dead transitions. [2025-03-13 21:37:47,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 79 transitions, 497 flow [2025-03-13 21:37:47,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-13 21:37:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-13 21:37:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2025-03-13 21:37:47,052 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5433333333333333 [2025-03-13 21:37:47,052 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 360 flow. Second operand 4 states and 163 transitions. [2025-03-13 21:37:47,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 79 transitions, 497 flow [2025-03-13 21:37:47,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 79 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-13 21:37:47,055 INFO L231 Difference]: Finished difference. Result has 79 places, 56 transitions, 261 flow [2025-03-13 21:37:47,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=79, PETRI_TRANSITIONS=56} [2025-03-13 21:37:47,055 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2025-03-13 21:37:47,055 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 56 transitions, 261 flow [2025-03-13 21:37:47,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:37:47,056 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:37:47,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:37:47,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 21:37:47,056 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-13 21:37:47,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:37:47,056 INFO L85 PathProgramCache]: Analyzing trace with hash -811665248, now seen corresponding path program 1 times [2025-03-13 21:37:47,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:37:47,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519460870] [2025-03-13 21:37:47,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:37:47,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:37:47,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-13 21:37:47,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-13 21:37:47,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:37:47,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:37:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:37:47,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:37:47,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519460870] [2025-03-13 21:37:47,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519460870] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:37:47,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:37:47,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:37:47,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795195927] [2025-03-13 21:37:47,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:37:47,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:37:47,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:37:47,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:37:47,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:37:47,292 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 75 [2025-03-13 21:37:47,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 56 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 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) [2025-03-13 21:37:47,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:37:47,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 75 [2025-03-13 21:37:47,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:37:47,375 INFO L124 PetriNetUnfolderBase]: 60/244 cut-off events. [2025-03-13 21:37:47,375 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2025-03-13 21:37:47,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 244 events. 60/244 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 750 event pairs, 20 based on Foata normal form. 13/254 useless extension candidates. Maximal degree in co-relation 667. Up to 105 conditions per place. [2025-03-13 21:37:47,377 INFO L140 encePairwiseOnDemand]: 71/75 looper letters, 38 selfloop transitions, 6 changer transitions 2/63 dead transitions. [2025-03-13 21:37:47,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 63 transitions, 388 flow [2025-03-13 21:37:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-13 21:37:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-13 21:37:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2025-03-13 21:37:47,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5233333333333333 [2025-03-13 21:37:47,379 INFO L175 Difference]: Start difference. First operand has 79 places, 56 transitions, 261 flow. Second operand 4 states and 157 transitions. [2025-03-13 21:37:47,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 63 transitions, 388 flow [2025-03-13 21:37:47,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 331 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-03-13 21:37:47,383 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 211 flow [2025-03-13 21:37:47,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2025-03-13 21:37:47,383 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2025-03-13 21:37:47,383 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 211 flow [2025-03-13 21:37:47,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 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) [2025-03-13 21:37:47,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:37:47,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:37:47,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-13 21:37:47,386 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-13 21:37:47,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:37:47,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1799194111, now seen corresponding path program 1 times [2025-03-13 21:37:47,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:37:47,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755972972] [2025-03-13 21:37:47,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:37:47,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:37:47,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-13 21:37:47,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-13 21:37:47,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:37:47,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:37:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:37:47,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:37:47,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755972972] [2025-03-13 21:37:47,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755972972] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:37:47,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:37:47,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:37:47,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213878194] [2025-03-13 21:37:47,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:37:47,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:37:47,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:37:47,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:37:47,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:37:47,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 75 [2025-03-13 21:37:47,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2025-03-13 21:37:47,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:37:47,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 75 [2025-03-13 21:37:47,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:37:47,656 INFO L124 PetriNetUnfolderBase]: 67/240 cut-off events. [2025-03-13 21:37:47,657 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2025-03-13 21:37:47,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 240 events. 67/240 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 704 event pairs, 46 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 633. Up to 156 conditions per place. [2025-03-13 21:37:47,658 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2025-03-13 21:37:47,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 61 transitions, 349 flow [2025-03-13 21:37:47,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:37:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:37:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2025-03-13 21:37:47,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38 [2025-03-13 21:37:47,659 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 211 flow. Second operand 6 states and 171 transitions. [2025-03-13 21:37:47,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 61 transitions, 349 flow [2025-03-13 21:37:47,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 61 transitions, 335 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-13 21:37:47,660 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2025-03-13 21:37:47,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=195, 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=6, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2025-03-13 21:37:47,661 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2025-03-13 21:37:47,661 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2025-03-13 21:37:47,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2025-03-13 21:37:47,664 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-03-13 21:37:47,665 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-03-13 21:37:47,665 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-03-13 21:37:47,665 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-03-13 21:37:47,665 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-03-13 21:37:47,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-13 21:37:47,665 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:37:47,670 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-13 21:37:47,671 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-13 21:37:47,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.03 09:37:47 BasicIcfg [2025-03-13 21:37:47,682 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-13 21:37:47,683 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-13 21:37:47,683 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-13 21:37:47,683 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-13 21:37:47,684 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:37:44" (3/4) ... [2025-03-13 21:37:47,685 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-13 21:37:47,688 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-03-13 21:37:47,693 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2025-03-13 21:37:47,693 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-03-13 21:37:47,693 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-13 21:37:47,693 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-13 21:37:47,745 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-13 21:37:47,746 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-13 21:37:47,746 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-13 21:37:47,747 INFO L158 Benchmark]: Toolchain (without parser) took 4067.38ms. Allocated memory was 142.6MB in the beginning and 318.8MB in the end (delta: 176.2MB). Free memory was 104.1MB in the beginning and 274.3MB in the end (delta: -170.2MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2025-03-13 21:37:47,747 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:37:47,748 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.40ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 84.1MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-13 21:37:47,748 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.14ms. Allocated memory is still 142.6MB. Free memory was 84.1MB in the beginning and 81.7MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-13 21:37:47,750 INFO L158 Benchmark]: Boogie Preprocessor took 29.39ms. Allocated memory is still 142.6MB. Free memory was 81.7MB in the beginning and 80.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:37:47,750 INFO L158 Benchmark]: IcfgBuilder took 558.33ms. Allocated memory is still 142.6MB. Free memory was 80.7MB in the beginning and 35.8MB in the end (delta: 44.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-13 21:37:47,751 INFO L158 Benchmark]: TraceAbstraction took 3023.31ms. Allocated memory was 142.6MB in the beginning and 318.8MB in the end (delta: 176.2MB). Free memory was 34.8MB in the beginning and 281.1MB in the end (delta: -246.3MB). Peak memory consumption was 112.4MB. Max. memory is 16.1GB. [2025-03-13 21:37:47,751 INFO L158 Benchmark]: Witness Printer took 62.87ms. Allocated memory is still 318.8MB. Free memory was 281.1MB in the beginning and 274.3MB in the end (delta: 6.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:37:47,752 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.40ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 84.1MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.14ms. Allocated memory is still 142.6MB. Free memory was 84.1MB in the beginning and 81.7MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.39ms. Allocated memory is still 142.6MB. Free memory was 81.7MB in the beginning and 80.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 558.33ms. Allocated memory is still 142.6MB. Free memory was 80.7MB in the beginning and 35.8MB in the end (delta: 44.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3023.31ms. Allocated memory was 142.6MB in the beginning and 318.8MB in the end (delta: 176.2MB). Free memory was 34.8MB in the beginning and 281.1MB in the end (delta: -246.3MB). Peak memory consumption was 112.4MB. Max. memory is 16.1GB. * Witness Printer took 62.87ms. Allocated memory is still 318.8MB. Free memory was 281.1MB in the beginning and 274.3MB in the end (delta: 6.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 19]: 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: 19]: 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: 19]: 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 3 procedures, 99 locations, 5 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: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 332 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 310 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 126 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 815 IncrementalHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 126 mSolverCounterUnsat, 19 mSDtfsCounter, 815 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=360occurred in iteration=5, InterpolantAutomatonStates: 37, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 220 ConstructedInterpolants, 0 QuantifiedInterpolants, 1228 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-13 21:37:47,766 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