./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed 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/weaver/chl-name-comparator-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:38:35,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:38:35,984 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:38:35,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:38:35,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:38:36,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:38:36,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:38:36,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:38:36,009 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:38:36,010 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:38:36,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:38:36,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:38:36,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:38:36,011 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:38:36,011 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:38:36,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:38:36,011 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:38:36,012 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:38:36,013 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:38:36,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:38:36,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:38:36,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:38:36,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:38:36,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:38:36,013 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:38:36,013 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:38:36,013 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:38:36,014 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:38:36,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:38:36,014 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:38:36,014 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:38:36,014 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:38:36,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:38:36,014 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 ! overflow) ) 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 -> 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 [2025-03-09 06:38:36,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:38:36,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:38:36,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:38:36,339 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:38:36,339 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:38:36,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2025-03-09 06:38:37,501 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a9d37dc/334178656ac34a7a864332cdf19c09d0/FLAGba62a2c39 [2025-03-09 06:38:37,753 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:38:37,754 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2025-03-09 06:38:37,780 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a9d37dc/334178656ac34a7a864332cdf19c09d0/FLAGba62a2c39 [2025-03-09 06:38:38,076 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a9d37dc/334178656ac34a7a864332cdf19c09d0 [2025-03-09 06:38:38,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:38:38,079 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:38:38,080 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:38:38,080 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:38:38,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:38:38,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408941e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38, skipping insertion in model container [2025-03-09 06:38:38,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,106 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:38:38,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:38:38,261 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:38:38,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:38:38,304 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:38:38,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38 WrapperNode [2025-03-09 06:38:38,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:38:38,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:38:38,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:38:38,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:38:38,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,351 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 350 [2025-03-09 06:38:38,351 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:38:38,352 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:38:38,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:38:38,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:38:38,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,361 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,375 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-09 06:38:38,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,376 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,381 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,382 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:38:38,385 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:38:38,386 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:38:38,386 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:38:38,386 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (1/1) ... [2025-03-09 06:38:38,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:38:38,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:38:38,415 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) [2025-03-09 06:38:38,420 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 [2025-03-09 06:38:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:38:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:38:38,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:38:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:38:38,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:38:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:38:38,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:38:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:38:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:38:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:38:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:38:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:38:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:38:38,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:38:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:38:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:38:38,437 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:38:38,528 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:38:38,529 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:38:38,927 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:38:38,927 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:38:39,159 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:38:39,159 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:38:39,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:38:39 BoogieIcfgContainer [2025-03-09 06:38:39,160 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:38:39,161 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:38:39,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:38:39,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:38:39,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:38:38" (1/3) ... [2025-03-09 06:38:39,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673b11c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:38:39, skipping insertion in model container [2025-03-09 06:38:39,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:38:38" (2/3) ... [2025-03-09 06:38:39,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673b11c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:38:39, skipping insertion in model container [2025-03-09 06:38:39,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:38:39" (3/3) ... [2025-03-09 06:38:39,166 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2025-03-09 06:38:39,176 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:38:39,177 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-trans.wvr.c that has 4 procedures, 98 locations, 1 initial locations, 4 loop locations, and 26 error locations. [2025-03-09 06:38:39,177 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:38:39,225 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 06:38:39,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 113 transitions, 247 flow [2025-03-09 06:38:39,298 INFO L124 PetriNetUnfolderBase]: 16/110 cut-off events. [2025-03-09 06:38:39,300 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 06:38:39,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 110 events. 16/110 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 447 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2025-03-09 06:38:39,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 113 transitions, 247 flow [2025-03-09 06:38:39,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 108 transitions, 231 flow [2025-03-09 06:38:39,321 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:38:39,333 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;@567db305, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:38:39,333 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2025-03-09 06:38:39,335 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:38:39,335 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:38:39,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:38:39,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:38:39,336 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:38:39,336 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:38:39,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:38:39,340 INFO L85 PathProgramCache]: Analyzing trace with hash 942033, now seen corresponding path program 1 times [2025-03-09 06:38:39,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:38:39,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199850241] [2025-03-09 06:38:39,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:38:39,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:38:39,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:38:39,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:38:39,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:38:39,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:38:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:38:39,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:38:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199850241] [2025-03-09 06:38:39,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199850241] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:38:39,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:38:39,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:38:39,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889124586] [2025-03-09 06:38:39,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:38:39,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:38:39,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:38:39,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:38:39,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:38:39,591 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-09 06:38:39,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2025-03-09 06:38:39,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:38:39,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-09 06:38:39,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:38:41,195 INFO L124 PetriNetUnfolderBase]: 12542/23557 cut-off events. [2025-03-09 06:38:41,196 INFO L125 PetriNetUnfolderBase]: For 529/529 co-relation queries the response was YES. [2025-03-09 06:38:41,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40543 conditions, 23557 events. 12542/23557 cut-off events. For 529/529 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 210578 event pairs, 8652 based on Foata normal form. 1/18441 useless extension candidates. Maximal degree in co-relation 39200. Up to 16540 conditions per place. [2025-03-09 06:38:41,343 INFO L140 encePairwiseOnDemand]: 104/113 looper letters, 55 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2025-03-09 06:38:41,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 108 transitions, 349 flow [2025-03-09 06:38:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:38:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:38:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2025-03-09 06:38:41,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6017699115044248 [2025-03-09 06:38:41,354 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 231 flow. Second operand 4 states and 272 transitions. [2025-03-09 06:38:41,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 108 transitions, 349 flow [2025-03-09 06:38:41,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 108 transitions, 340 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 06:38:41,367 INFO L231 Difference]: Finished difference. Result has 102 places, 108 transitions, 245 flow [2025-03-09 06:38:41,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=102, PETRI_TRANSITIONS=108} [2025-03-09 06:38:41,371 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 0 predicate places. [2025-03-09 06:38:41,372 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 108 transitions, 245 flow [2025-03-09 06:38:41,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2025-03-09 06:38:41,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:38:41,372 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:38:41,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:38:41,373 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:38:41,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:38:41,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1999804660, now seen corresponding path program 1 times [2025-03-09 06:38:41,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:38:41,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505118911] [2025-03-09 06:38:41,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:38:41,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:38:41,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:38:41,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:38:41,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:38:41,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:38:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:38:41,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:38:41,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505118911] [2025-03-09 06:38:41,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505118911] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:38:41,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507694596] [2025-03-09 06:38:41,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:38:41,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:38:41,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:38:41,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:38:41,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:38:41,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:38:41,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:38:41,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:38:41,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:38:41,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:38:41,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:38:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:38:41,623 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:38:41,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507694596] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:38:41,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:38:41,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:38:41,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107208645] [2025-03-09 06:38:41,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:38:41,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:38:41,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:38:41,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:38:41,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:38:41,632 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-09 06:38:41,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 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) [2025-03-09 06:38:41,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:38:41,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-09 06:38:41,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:38:42,963 INFO L124 PetriNetUnfolderBase]: 12542/23556 cut-off events. [2025-03-09 06:38:42,965 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2025-03-09 06:38:43,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40390 conditions, 23556 events. 12542/23556 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 210666 event pairs, 8652 based on Foata normal form. 1/18441 useless extension candidates. Maximal degree in co-relation 40363. Up to 16535 conditions per place. [2025-03-09 06:38:43,092 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 51 selfloop transitions, 7 changer transitions 0/107 dead transitions. [2025-03-09 06:38:43,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 357 flow [2025-03-09 06:38:43,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:38:43,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:38:43,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 371 transitions. [2025-03-09 06:38:43,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5471976401179941 [2025-03-09 06:38:43,096 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 245 flow. Second operand 6 states and 371 transitions. [2025-03-09 06:38:43,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 357 flow [2025-03-09 06:38:43,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 107 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:38:43,100 INFO L231 Difference]: Finished difference. Result has 105 places, 107 transitions, 252 flow [2025-03-09 06:38:43,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=105, PETRI_TRANSITIONS=107} [2025-03-09 06:38:43,102 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2025-03-09 06:38:43,102 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 107 transitions, 252 flow [2025-03-09 06:38:43,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 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) [2025-03-09 06:38:43,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:38:43,102 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:38:43,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 06:38:43,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:38:43,303 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:38:43,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:38:43,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1864401449, now seen corresponding path program 1 times [2025-03-09 06:38:43,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:38:43,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140028438] [2025-03-09 06:38:43,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:38:43,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:38:43,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:38:43,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:38:43,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:38:43,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:38:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:38:43,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:38:43,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140028438] [2025-03-09 06:38:43,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140028438] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:38:43,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820403639] [2025-03-09 06:38:43,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:38:43,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:38:43,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:38:43,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:38:43,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:38:43,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:38:43,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:38:43,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:38:43,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:38:43,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:38:43,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:38:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:38:43,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:38:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:38:43,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820403639] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:38:43,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:38:43,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:38:43,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805537303] [2025-03-09 06:38:43,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:38:43,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:38:43,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:38:43,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:38:43,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:38:43,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-09 06:38:43,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 107 transitions, 252 flow. Second operand has 12 states, 12 states have (on average 53.083333333333336) internal successors, (637), 12 states have internal predecessors, (637), 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) [2025-03-09 06:38:43,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:38:43,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-09 06:38:43,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:38:44,662 INFO L124 PetriNetUnfolderBase]: 12545/23568 cut-off events. [2025-03-09 06:38:44,662 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2025-03-09 06:38:44,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40434 conditions, 23568 events. 12545/23568 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 210794 event pairs, 8652 based on Foata normal form. 3/18453 useless extension candidates. Maximal degree in co-relation 40364. Up to 16542 conditions per place. [2025-03-09 06:38:44,772 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 54 selfloop transitions, 13 changer transitions 0/116 dead transitions. [2025-03-09 06:38:44,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 440 flow [2025-03-09 06:38:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:38:44,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:38:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2025-03-09 06:38:44,776 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5221238938053098 [2025-03-09 06:38:44,776 INFO L175 Difference]: Start difference. First operand has 105 places, 107 transitions, 252 flow. Second operand 10 states and 590 transitions. [2025-03-09 06:38:44,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 440 flow [2025-03-09 06:38:44,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 116 transitions, 394 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-09 06:38:44,779 INFO L231 Difference]: Finished difference. Result has 112 places, 116 transitions, 304 flow [2025-03-09 06:38:44,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=304, PETRI_PLACES=112, PETRI_TRANSITIONS=116} [2025-03-09 06:38:44,781 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2025-03-09 06:38:44,781 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 116 transitions, 304 flow [2025-03-09 06:38:44,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 53.083333333333336) internal successors, (637), 12 states have internal predecessors, (637), 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) [2025-03-09 06:38:44,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:38:44,782 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:38:44,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 06:38:44,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-09 06:38:44,986 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:38:44,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:38:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1714554409, now seen corresponding path program 1 times [2025-03-09 06:38:44,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:38:44,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265353398] [2025-03-09 06:38:44,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:38:44,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:38:44,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:38:44,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:38:44,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:38:44,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:38:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:38:45,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:38:45,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265353398] [2025-03-09 06:38:45,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265353398] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:38:45,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:38:45,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:38:45,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918113] [2025-03-09 06:38:45,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:38:45,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:38:45,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:38:45,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:38:45,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:38:45,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-09 06:38:45,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 116 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2025-03-09 06:38:45,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:38:45,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-09 06:38:45,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:38:47,258 INFO L124 PetriNetUnfolderBase]: 27152/48898 cut-off events. [2025-03-09 06:38:47,258 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-03-09 06:38:47,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85443 conditions, 48898 events. 27152/48898 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 2166. Compared 462025 event pairs, 11234 based on Foata normal form. 366/39885 useless extension candidates. Maximal degree in co-relation 85409. Up to 20438 conditions per place. [2025-03-09 06:38:47,533 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 146 selfloop transitions, 3 changer transitions 0/197 dead transitions. [2025-03-09 06:38:47,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 197 transitions, 772 flow [2025-03-09 06:38:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:38:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:38:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2025-03-09 06:38:47,535 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7676991150442478 [2025-03-09 06:38:47,535 INFO L175 Difference]: Start difference. First operand has 112 places, 116 transitions, 304 flow. Second operand 4 states and 347 transitions. [2025-03-09 06:38:47,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 197 transitions, 772 flow [2025-03-09 06:38:47,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 197 transitions, 761 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-09 06:38:47,539 INFO L231 Difference]: Finished difference. Result has 115 places, 118 transitions, 315 flow [2025-03-09 06:38:47,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=115, PETRI_TRANSITIONS=118} [2025-03-09 06:38:47,540 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 13 predicate places. [2025-03-09 06:38:47,541 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 118 transitions, 315 flow [2025-03-09 06:38:47,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2025-03-09 06:38:47,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:38:47,542 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:38:47,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:38:47,542 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:38:47,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:38:47,544 INFO L85 PathProgramCache]: Analyzing trace with hash -163971369, now seen corresponding path program 1 times [2025-03-09 06:38:47,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:38:47,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657071056] [2025-03-09 06:38:47,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:38:47,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:38:47,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:38:47,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:38:47,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:38:47,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:38:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:38:47,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:38:47,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657071056] [2025-03-09 06:38:47,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657071056] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:38:47,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:38:47,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:38:47,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445966856] [2025-03-09 06:38:47,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:38:47,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:38:47,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:38:47,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:38:47,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:38:47,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-09 06:38:47,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 118 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2025-03-09 06:38:47,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:38:47,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-09 06:38:47,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:38:51,941 INFO L124 PetriNetUnfolderBase]: 51817/93039 cut-off events. [2025-03-09 06:38:51,941 INFO L125 PetriNetUnfolderBase]: For 6307/7487 co-relation queries the response was YES. [2025-03-09 06:38:52,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167049 conditions, 93039 events. 51817/93039 cut-off events. For 6307/7487 co-relation queries the response was YES. Maximal size of possible extension queue 3809. Compared 953890 event pairs, 21501 based on Foata normal form. 726/77157 useless extension candidates. Maximal degree in co-relation 167013. Up to 38574 conditions per place. [2025-03-09 06:38:52,505 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 149 selfloop transitions, 3 changer transitions 0/200 dead transitions. [2025-03-09 06:38:52,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 200 transitions, 818 flow [2025-03-09 06:38:52,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:38:52,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:38:52,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2025-03-09 06:38:52,507 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7610619469026548 [2025-03-09 06:38:52,507 INFO L175 Difference]: Start difference. First operand has 115 places, 118 transitions, 315 flow. Second operand 4 states and 344 transitions. [2025-03-09 06:38:52,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 200 transitions, 818 flow [2025-03-09 06:38:52,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 200 transitions, 812 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:38:52,512 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 335 flow [2025-03-09 06:38:52,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2025-03-09 06:38:52,513 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 17 predicate places. [2025-03-09 06:38:52,513 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 335 flow [2025-03-09 06:38:52,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2025-03-09 06:38:52,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:38:52,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:38:52,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:38:52,513 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:38:52,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:38:52,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1755485121, now seen corresponding path program 1 times [2025-03-09 06:38:52,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:38:52,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390348629] [2025-03-09 06:38:52,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:38:52,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:38:52,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:38:52,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:38:52,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:38:52,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:38:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:38:52,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:38:52,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390348629] [2025-03-09 06:38:52,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390348629] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:38:52,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:38:52,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:38:52,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159600805] [2025-03-09 06:38:52,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:38:52,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:38:52,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:38:52,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:38:52,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:38:52,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 113 [2025-03-09 06:38:52,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2025-03-09 06:38:52,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:38:52,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 113 [2025-03-09 06:38:52,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:38:56,489 INFO L124 PetriNetUnfolderBase]: 43409/71809 cut-off events. [2025-03-09 06:38:56,489 INFO L125 PetriNetUnfolderBase]: For 8350/9794 co-relation queries the response was YES. [2025-03-09 06:38:56,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139556 conditions, 71809 events. 43409/71809 cut-off events. For 8350/9794 co-relation queries the response was YES. Maximal size of possible extension queue 2495. Compared 640503 event pairs, 17302 based on Foata normal form. 0/62082 useless extension candidates. Maximal degree in co-relation 139518. Up to 31255 conditions per place. [2025-03-09 06:38:56,882 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 181 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2025-03-09 06:38:56,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 235 transitions, 990 flow [2025-03-09 06:38:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:38:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:38:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2025-03-09 06:38:56,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7716814159292036 [2025-03-09 06:38:56,884 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 335 flow. Second operand 5 states and 436 transitions. [2025-03-09 06:38:56,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 235 transitions, 990 flow [2025-03-09 06:38:56,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 235 transitions, 982 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:38:56,949 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 358 flow [2025-03-09 06:38:56,949 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2025-03-09 06:38:56,950 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 23 predicate places. [2025-03-09 06:38:56,950 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 358 flow [2025-03-09 06:38:56,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2025-03-09 06:38:56,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:38:56,950 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:38:56,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:38:56,950 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:38:56,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:38:56,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1795871582, now seen corresponding path program 1 times [2025-03-09 06:38:56,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:38:56,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691303303] [2025-03-09 06:38:56,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:38:56,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:38:56,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:38:56,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:38:56,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:38:56,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:38:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:38:57,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:38:57,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691303303] [2025-03-09 06:38:57,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691303303] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:38:57,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:38:57,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:38:57,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844377569] [2025-03-09 06:38:57,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:38:57,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:38:57,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:38:57,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:38:57,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:38:57,131 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2025-03-09 06:38:57,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2025-03-09 06:38:57,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:38:57,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2025-03-09 06:38:57,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:39:05,319 INFO L124 PetriNetUnfolderBase]: 83876/148890 cut-off events. [2025-03-09 06:39:05,319 INFO L125 PetriNetUnfolderBase]: For 37538/41497 co-relation queries the response was YES. [2025-03-09 06:39:05,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288639 conditions, 148890 events. 83876/148890 cut-off events. For 37538/41497 co-relation queries the response was YES. Maximal size of possible extension queue 5155. Compared 1560829 event pairs, 37665 based on Foata normal form. 1181/127880 useless extension candidates. Maximal degree in co-relation 288599. Up to 63586 conditions per place. [2025-03-09 06:39:06,345 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 158 selfloop transitions, 3 changer transitions 0/209 dead transitions. [2025-03-09 06:39:06,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 209 transitions, 948 flow [2025-03-09 06:39:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:39:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:39:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2025-03-09 06:39:06,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.754424778761062 [2025-03-09 06:39:06,347 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 358 flow. Second operand 4 states and 341 transitions. [2025-03-09 06:39:06,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 209 transitions, 948 flow [2025-03-09 06:39:06,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 209 transitions, 948 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:39:06,371 INFO L231 Difference]: Finished difference. Result has 130 places, 124 transitions, 380 flow [2025-03-09 06:39:06,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=380, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2025-03-09 06:39:06,372 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 28 predicate places. [2025-03-09 06:39:06,372 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 380 flow [2025-03-09 06:39:06,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2025-03-09 06:39:06,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:39:06,372 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:39:06,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:39:06,372 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:39:06,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:39:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1381059090, now seen corresponding path program 1 times [2025-03-09 06:39:06,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:39:06,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726960247] [2025-03-09 06:39:06,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:06,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:39:06,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:39:06,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:39:06,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:06,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:39:06,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:39:06,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726960247] [2025-03-09 06:39:06,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726960247] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:39:06,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:39:06,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:39:06,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882689930] [2025-03-09 06:39:06,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:39:06,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:39:06,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:39:06,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:39:06,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:39:06,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 113 [2025-03-09 06:39:06,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 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) [2025-03-09 06:39:06,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:39:06,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 113 [2025-03-09 06:39:06,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand