./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:09:32,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:09:32,277 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:09:32,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:09:32,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:09:32,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:09:32,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:09:32,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:09:32,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:09:32,296 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:09:32,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:09:32,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:09:32,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:09:32,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:09:32,297 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:09:32,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:09:32,297 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:09:32,297 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:09:32,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:09:32,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:09:32,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:09:32,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:09:32,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:09:32,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:09:32,298 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:09:32,298 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:09:32,298 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:09:32,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:09:32,298 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:09:32,298 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:09:32,298 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:09:32,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:09:32,298 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:09:32,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:09:32,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:09:32,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:09:32,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:09:32,299 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:09:32,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:09:32,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:09:32,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:09:32,299 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:09:32,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:09:32,299 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:09:32,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:09:32,300 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-jdk21/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 -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2025-02-08 14:09:32,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:09:32,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:09:32,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:09:32,568 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:09:32,568 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:09:32,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2025-02-08 14:09:33,763 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0a4c8b87b/132c21924a734e9e9846a5de70253342/FLAG74b3c11e9 [2025-02-08 14:09:34,038 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:09:34,039 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2025-02-08 14:09:34,069 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0a4c8b87b/132c21924a734e9e9846a5de70253342/FLAG74b3c11e9 [2025-02-08 14:09:34,082 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0a4c8b87b/132c21924a734e9e9846a5de70253342 [2025-02-08 14:09:34,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:09:34,085 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:09:34,086 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:09:34,086 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:09:34,089 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:09:34,090 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596afd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34, skipping insertion in model container [2025-02-08 14:09:34,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:09:34,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:09:34,272 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:09:34,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:09:34,303 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:09:34,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34 WrapperNode [2025-02-08 14:09:34,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:09:34,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:09:34,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:09:34,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:09:34,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,373 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 168 [2025-02-08 14:09:34,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:09:34,374 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:09:34,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:09:34,374 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:09:34,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,420 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-02-08 14:09:34,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,429 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,430 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:09:34,441 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:09:34,441 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:09:34,441 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:09:34,442 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (1/1) ... [2025-02-08 14:09:34,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:09:34,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:34,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:09:34,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:09:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:09:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:09:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:09:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:09:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:09:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:09:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:09:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:09:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:09:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:09:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:09:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:09:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:09:34,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:09:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:09:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:09:34,499 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:09:34,594 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:09:34,595 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:09:34,925 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:09:34,925 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:09:35,184 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:09:35,185 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:09:35,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:09:35 BoogieIcfgContainer [2025-02-08 14:09:35,186 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:09:35,187 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:09:35,188 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:09:35,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:09:35,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:09:34" (1/3) ... [2025-02-08 14:09:35,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb11af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:09:35, skipping insertion in model container [2025-02-08 14:09:35,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:34" (2/3) ... [2025-02-08 14:09:35,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb11af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:09:35, skipping insertion in model container [2025-02-08 14:09:35,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:09:35" (3/3) ... [2025-02-08 14:09:35,194 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2025-02-08 14:09:35,205 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:09:35,206 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-word-subst.wvr.c that has 4 procedures, 75 locations, 1 initial locations, 6 loop locations, and 18 error locations. [2025-02-08 14:09:35,207 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:09:35,299 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:09:35,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 89 transitions, 199 flow [2025-02-08 14:09:35,384 INFO L124 PetriNetUnfolderBase]: 15/86 cut-off events. [2025-02-08 14:09:35,386 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 14:09:35,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 15/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 260 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2025-02-08 14:09:35,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 89 transitions, 199 flow [2025-02-08 14:09:35,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 84 transitions, 183 flow [2025-02-08 14:09:35,396 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:09:35,404 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;@175d2617, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:09:35,405 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2025-02-08 14:09:35,407 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:09:35,407 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:09:35,407 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:09:35,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:35,408 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:09:35,408 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 14:09:35,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash 690845, now seen corresponding path program 1 times [2025-02-08 14:09:35,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:35,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022403812] [2025-02-08 14:09:35,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:35,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:35,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:09:35,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:09:35,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:35,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:35,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:35,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022403812] [2025-02-08 14:09:35,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022403812] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:35,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:35,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:09:35,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313010492] [2025-02-08 14:09:35,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:35,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:09:35,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:35,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:09:35,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:09:35,651 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2025-02-08 14:09:35,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2025-02-08 14:09:35,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:35,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2025-02-08 14:09:35,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:36,586 INFO L124 PetriNetUnfolderBase]: 3602/6351 cut-off events. [2025-02-08 14:09:36,586 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2025-02-08 14:09:36,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11064 conditions, 6351 events. 3602/6351 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 43647 event pairs, 2206 based on Foata normal form. 3/4748 useless extension candidates. Maximal degree in co-relation 10446. Up to 4505 conditions per place. [2025-02-08 14:09:36,665 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 40 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2025-02-08 14:09:36,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 81 transitions, 273 flow [2025-02-08 14:09:36,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:09:36,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:09:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2025-02-08 14:09:36,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.547752808988764 [2025-02-08 14:09:36,675 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 183 flow. Second operand 4 states and 195 transitions. [2025-02-08 14:09:36,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 81 transitions, 273 flow [2025-02-08 14:09:36,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 264 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:09:36,681 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 184 flow [2025-02-08 14:09:36,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2025-02-08 14:09:36,685 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -5 predicate places. [2025-02-08 14:09:36,685 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 184 flow [2025-02-08 14:09:36,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2025-02-08 14:09:36,685 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:36,685 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-08 14:09:36,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:09:36,686 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 14:09:36,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:36,686 INFO L85 PathProgramCache]: Analyzing trace with hash 21416762, now seen corresponding path program 1 times [2025-02-08 14:09:36,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:36,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521167517] [2025-02-08 14:09:36,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:36,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:36,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 14:09:36,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 14:09:36,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:36,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:36,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:36,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521167517] [2025-02-08 14:09:36,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521167517] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:36,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:36,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:09:36,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609220930] [2025-02-08 14:09:36,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:36,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:09:36,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:36,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:09:36,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:09:36,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2025-02-08 14:09:36,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2025-02-08 14:09:36,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:36,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2025-02-08 14:09:36,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:37,302 INFO L124 PetriNetUnfolderBase]: 3605/6363 cut-off events. [2025-02-08 14:09:37,303 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2025-02-08 14:09:37,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11026 conditions, 6363 events. 3605/6363 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 43728 event pairs, 2206 based on Foata normal form. 3/4764 useless extension candidates. Maximal degree in co-relation 10958. Up to 4518 conditions per place. [2025-02-08 14:09:37,351 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 47 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2025-02-08 14:09:37,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 90 transitions, 330 flow [2025-02-08 14:09:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:09:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:09:37,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2025-02-08 14:09:37,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5730337078651685 [2025-02-08 14:09:37,354 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 184 flow. Second operand 4 states and 204 transitions. [2025-02-08 14:09:37,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 90 transitions, 330 flow [2025-02-08 14:09:37,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 300 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:09:37,358 INFO L231 Difference]: Finished difference. Result has 77 places, 90 transitions, 250 flow [2025-02-08 14:09:37,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=77, PETRI_TRANSITIONS=90} [2025-02-08 14:09:37,359 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2025-02-08 14:09:37,360 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 90 transitions, 250 flow [2025-02-08 14:09:37,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2025-02-08 14:09:37,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:37,360 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:09:37,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:09:37,360 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 14:09:37,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:37,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1922717927, now seen corresponding path program 1 times [2025-02-08 14:09:37,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:37,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919470261] [2025-02-08 14:09:37,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:37,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:37,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:09:37,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:09:37,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:37,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:37,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:37,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919470261] [2025-02-08 14:09:37,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919470261] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:09:37,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232732767] [2025-02-08 14:09:37,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:37,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:37,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:37,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:09:37,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:09:37,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:09:37,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:09:37,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:37,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:37,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:09:37,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:09:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:37,564 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:09:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:37,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232732767] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:09:37,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:09:37,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-02-08 14:09:37,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584324011] [2025-02-08 14:09:37,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:09:37,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:09:37,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:37,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:09:37,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:09:37,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2025-02-08 14:09:37,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 90 transitions, 250 flow. Second operand has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 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) [2025-02-08 14:09:37,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:37,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2025-02-08 14:09:37,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:38,170 INFO L124 PetriNetUnfolderBase]: 3614/6399 cut-off events. [2025-02-08 14:09:38,172 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2025-02-08 14:09:38,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11141 conditions, 6399 events. 3614/6399 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 44110 event pairs, 2206 based on Foata normal form. 0/4792 useless extension candidates. Maximal degree in co-relation 10972. Up to 4521 conditions per place. [2025-02-08 14:09:38,199 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 47 selfloop transitions, 37 changer transitions 0/117 dead transitions. [2025-02-08 14:09:38,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 538 flow [2025-02-08 14:09:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:09:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:09:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 453 transitions. [2025-02-08 14:09:38,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5089887640449439 [2025-02-08 14:09:38,202 INFO L175 Difference]: Start difference. First operand has 77 places, 90 transitions, 250 flow. Second operand 10 states and 453 transitions. [2025-02-08 14:09:38,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 538 flow [2025-02-08 14:09:38,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 117 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:09:38,204 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 494 flow [2025-02-08 14:09:38,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=494, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2025-02-08 14:09:38,205 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2025-02-08 14:09:38,205 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 494 flow [2025-02-08 14:09:38,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 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) [2025-02-08 14:09:38,206 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:38,206 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:38,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:09:38,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:38,407 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 14:09:38,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash -526081626, now seen corresponding path program 1 times [2025-02-08 14:09:38,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:38,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412896980] [2025-02-08 14:09:38,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:38,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:09:38,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:09:38,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:38,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:38,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:38,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412896980] [2025-02-08 14:09:38,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412896980] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:38,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:38,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:09:38,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808401855] [2025-02-08 14:09:38,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:38,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:09:38,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:38,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:09:38,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:09:38,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 89 [2025-02-08 14:09:38,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 494 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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) [2025-02-08 14:09:38,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:38,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 89 [2025-02-08 14:09:38,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:39,241 INFO L124 PetriNetUnfolderBase]: 6654/11031 cut-off events. [2025-02-08 14:09:39,242 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2025-02-08 14:09:39,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19860 conditions, 11031 events. 6654/11031 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 73381 event pairs, 3250 based on Foata normal form. 146/8573 useless extension candidates. Maximal degree in co-relation 19765. Up to 6586 conditions per place. [2025-02-08 14:09:39,307 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 131 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2025-02-08 14:09:39,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 168 transitions, 872 flow [2025-02-08 14:09:39,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:09:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:09:39,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 257 transitions. [2025-02-08 14:09:39,310 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7219101123595506 [2025-02-08 14:09:39,310 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 494 flow. Second operand 4 states and 257 transitions. [2025-02-08 14:09:39,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 168 transitions, 872 flow [2025-02-08 14:09:39,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 168 transitions, 777 flow, removed 25 selfloop flow, removed 4 redundant places. [2025-02-08 14:09:39,315 INFO L231 Difference]: Finished difference. Result has 90 places, 120 transitions, 428 flow [2025-02-08 14:09:39,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=90, PETRI_TRANSITIONS=120} [2025-02-08 14:09:39,319 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2025-02-08 14:09:39,320 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 120 transitions, 428 flow [2025-02-08 14:09:39,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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) [2025-02-08 14:09:39,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:39,320 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:39,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:09:39,320 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 14:09:39,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:39,321 INFO L85 PathProgramCache]: Analyzing trace with hash 871307668, now seen corresponding path program 1 times [2025-02-08 14:09:39,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:39,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335402065] [2025-02-08 14:09:39,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:39,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:39,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:09:39,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:09:39,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:39,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:39,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:39,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335402065] [2025-02-08 14:09:39,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335402065] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:39,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:39,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:09:39,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868273013] [2025-02-08 14:09:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:39,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:09:39,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:39,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:09:39,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:09:39,517 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 89 [2025-02-08 14:09:39,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 120 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 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) [2025-02-08 14:09:39,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:39,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 89 [2025-02-08 14:09:39,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:40,982 INFO L124 PetriNetUnfolderBase]: 12407/21749 cut-off events. [2025-02-08 14:09:40,982 INFO L125 PetriNetUnfolderBase]: For 2476/2508 co-relation queries the response was YES. [2025-02-08 14:09:41,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39906 conditions, 21749 events. 12407/21749 cut-off events. For 2476/2508 co-relation queries the response was YES. Maximal size of possible extension queue 1094. Compared 178158 event pairs, 7220 based on Foata normal form. 349/17187 useless extension candidates. Maximal degree in co-relation 39798. Up to 7837 conditions per place. [2025-02-08 14:09:41,095 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 127 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2025-02-08 14:09:41,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 173 transitions, 872 flow [2025-02-08 14:09:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:09:41,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:09:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2025-02-08 14:09:41,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6235955056179775 [2025-02-08 14:09:41,097 INFO L175 Difference]: Start difference. First operand has 90 places, 120 transitions, 428 flow. Second operand 6 states and 333 transitions. [2025-02-08 14:09:41,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 173 transitions, 872 flow [2025-02-08 14:09:41,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 173 transitions, 867 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:09:41,104 INFO L231 Difference]: Finished difference. Result has 97 places, 123 transitions, 482 flow [2025-02-08 14:09:41,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=482, PETRI_PLACES=97, PETRI_TRANSITIONS=123} [2025-02-08 14:09:41,105 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2025-02-08 14:09:41,105 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 123 transitions, 482 flow [2025-02-08 14:09:41,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 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) [2025-02-08 14:09:41,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:41,106 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:41,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:09:41,106 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 14:09:41,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1240734600, now seen corresponding path program 1 times [2025-02-08 14:09:41,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:41,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530876270] [2025-02-08 14:09:41,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:41,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:41,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:09:41,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:09:41,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:41,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:41,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:41,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530876270] [2025-02-08 14:09:41,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530876270] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:41,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:41,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:09:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886079173] [2025-02-08 14:09:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:41,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:09:41,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:41,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:09:41,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:09:41,202 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 89 [2025-02-08 14:09:41,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 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) [2025-02-08 14:09:41,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:41,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 89 [2025-02-08 14:09:41,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:43,690 INFO L124 PetriNetUnfolderBase]: 23516/41540 cut-off events. [2025-02-08 14:09:43,690 INFO L125 PetriNetUnfolderBase]: For 7732/7800 co-relation queries the response was YES. [2025-02-08 14:09:43,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77648 conditions, 41540 events. 23516/41540 cut-off events. For 7732/7800 co-relation queries the response was YES. Maximal size of possible extension queue 1827. Compared 370883 event pairs, 13884 based on Foata normal form. 620/34040 useless extension candidates. Maximal degree in co-relation 77462. Up to 14575 conditions per place. [2025-02-08 14:09:43,983 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 152 selfloop transitions, 7 changer transitions 0/194 dead transitions. [2025-02-08 14:09:43,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 194 transitions, 1077 flow [2025-02-08 14:09:43,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:09:43,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:09:43,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 299 transitions. [2025-02-08 14:09:43,985 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6719101123595506 [2025-02-08 14:09:43,985 INFO L175 Difference]: Start difference. First operand has 97 places, 123 transitions, 482 flow. Second operand 5 states and 299 transitions. [2025-02-08 14:09:43,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 194 transitions, 1077 flow [2025-02-08 14:09:43,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 194 transitions, 1072 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-08 14:09:43,994 INFO L231 Difference]: Finished difference. Result has 103 places, 127 transitions, 548 flow [2025-02-08 14:09:43,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=548, PETRI_PLACES=103, PETRI_TRANSITIONS=127} [2025-02-08 14:09:43,995 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 24 predicate places. [2025-02-08 14:09:43,995 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 127 transitions, 548 flow [2025-02-08 14:09:43,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 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) [2025-02-08 14:09:43,995 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:43,995 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:43,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:09:43,995 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 14:09:43,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:43,996 INFO L85 PathProgramCache]: Analyzing trace with hash -174655221, now seen corresponding path program 1 times [2025-02-08 14:09:43,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:43,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704566948] [2025-02-08 14:09:43,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:43,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:44,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:09:44,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:09:44,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:44,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:44,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:44,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704566948] [2025-02-08 14:09:44,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704566948] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:44,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:44,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:09:44,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476169133] [2025-02-08 14:09:44,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:44,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:09:44,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:44,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:09:44,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:09:44,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 89 [2025-02-08 14:09:44,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 127 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 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) [2025-02-08 14:09:44,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:44,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 89 [2025-02-08 14:09:44,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:47,114 INFO L124 PetriNetUnfolderBase]: 39592/62744 cut-off events. [2025-02-08 14:09:47,114 INFO L125 PetriNetUnfolderBase]: For 7521/8433 co-relation queries the response was YES. [2025-02-08 14:09:47,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121817 conditions, 62744 events. 39592/62744 cut-off events. For 7521/8433 co-relation queries the response was YES. Maximal size of possible extension queue 2053. Compared 500691 event pairs, 19788 based on Foata normal form. 896/52982 useless extension candidates. Maximal degree in co-relation 121629. Up to 39191 conditions per place. [2025-02-08 14:09:47,488 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 140 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2025-02-08 14:09:47,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 180 transitions, 972 flow [2025-02-08 14:09:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:09:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:09:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2025-02-08 14:09:47,489 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7162921348314607 [2025-02-08 14:09:47,489 INFO L175 Difference]: Start difference. First operand has 103 places, 127 transitions, 548 flow. Second operand 4 states and 255 transitions. [2025-02-08 14:09:47,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 180 transitions, 972 flow [2025-02-08 14:09:47,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 180 transitions, 970 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-02-08 14:09:47,498 INFO L231 Difference]: Finished difference. Result has 108 places, 130 transitions, 575 flow [2025-02-08 14:09:47,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=575, PETRI_PLACES=108, PETRI_TRANSITIONS=130} [2025-02-08 14:09:47,498 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 29 predicate places. [2025-02-08 14:09:47,498 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 130 transitions, 575 flow [2025-02-08 14:09:47,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 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) [2025-02-08 14:09:47,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:47,499 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:47,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:09:47,499 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 14:09:47,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:47,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1119375646, now seen corresponding path program 1 times [2025-02-08 14:09:47,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:47,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698862657] [2025-02-08 14:09:47,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:47,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:47,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:09:47,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:09:47,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:47,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:47,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:47,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698862657] [2025-02-08 14:09:47,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698862657] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:47,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:47,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:09:47,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947569050] [2025-02-08 14:09:47,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:47,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:09:47,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:47,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:09:47,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:09:47,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 89 [2025-02-08 14:09:47,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 130 transitions, 575 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2025-02-08 14:09:47,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:47,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 89 [2025-02-08 14:09:47,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:54,447 INFO L124 PetriNetUnfolderBase]: 74212/130172 cut-off events. [2025-02-08 14:09:54,447 INFO L125 PetriNetUnfolderBase]: For 26293/26781 co-relation queries the response was YES. [2025-02-08 14:09:54,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253403 conditions, 130172 events. 74212/130172 cut-off events. For 26293/26781 co-relation queries the response was YES. Maximal size of possible extension queue 4947. Compared 1318938 event pairs, 43576 based on Foata normal form. 1476/109422 useless extension candidates. Maximal degree in co-relation 253212. Up to 46472 conditions per place. [2025-02-08 14:09:55,507 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 119 selfloop transitions, 13 changer transitions 0/170 dead transitions. [2025-02-08 14:09:55,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 170 transitions, 951 flow [2025-02-08 14:09:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:09:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:09:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 287 transitions. [2025-02-08 14:09:55,509 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6449438202247191 [2025-02-08 14:09:55,509 INFO L175 Difference]: Start difference. First operand has 108 places, 130 transitions, 575 flow. Second operand 5 states and 287 transitions. [2025-02-08 14:09:55,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 170 transitions, 951 flow [2025-02-08 14:09:55,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 170 transitions, 928 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:09:55,630 INFO L231 Difference]: Finished difference. Result has 112 places, 131 transitions, 600 flow [2025-02-08 14:09:55,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=600, PETRI_PLACES=112, PETRI_TRANSITIONS=131} [2025-02-08 14:09:55,631 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 33 predicate places. [2025-02-08 14:09:55,631 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 131 transitions, 600 flow [2025-02-08 14:09:55,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2025-02-08 14:09:55,631 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:55,631 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:55,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 14:09:55,632 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 14:09:55,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1656311156, now seen corresponding path program 1 times [2025-02-08 14:09:55,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:55,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656411538] [2025-02-08 14:09:55,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:55,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:55,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:09:55,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:09:55,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:55,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:55,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:55,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656411538] [2025-02-08 14:09:55,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656411538] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:09:55,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687916074] [2025-02-08 14:09:55,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:55,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:55,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:55,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:09:55,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:09:55,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:09:55,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:09:55,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:55,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:55,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:09:55,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:09:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:09:55,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:09:55,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687916074] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:55,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:09:55,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-02-08 14:09:55,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668030435] [2025-02-08 14:09:55,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:55,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:09:55,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:55,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:09:55,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:09:55,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2025-02-08 14:09:55,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 131 transitions, 600 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2025-02-08 14:09:55,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:55,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2025-02-08 14:09:55,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:02,301 INFO L124 PetriNetUnfolderBase]: 64884/118004 cut-off events. [2025-02-08 14:10:02,302 INFO L125 PetriNetUnfolderBase]: For 32687/32863 co-relation queries the response was YES. [2025-02-08 14:10:02,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228437 conditions, 118004 events. 64884/118004 cut-off events. For 32687/32863 co-relation queries the response was YES. Maximal size of possible extension queue 4259. Compared 1221630 event pairs, 40016 based on Foata normal form. 2140/103348 useless extension candidates. Maximal degree in co-relation 228243. Up to 79714 conditions per place. [2025-02-08 14:10:03,173 INFO L140 encePairwiseOnDemand]: 87/89 looper letters, 89 selfloop transitions, 1 changer transitions 0/129 dead transitions. [2025-02-08 14:10:03,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 129 transitions, 766 flow [2025-02-08 14:10:03,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:10:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:10:03,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2025-02-08 14:10:03,175 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6329588014981273 [2025-02-08 14:10:03,175 INFO L175 Difference]: Start difference. First operand has 112 places, 131 transitions, 600 flow. Second operand 3 states and 169 transitions. [2025-02-08 14:10:03,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 129 transitions, 766 flow [2025-02-08 14:10:03,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 129 transitions, 756 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:10:03,272 INFO L231 Difference]: Finished difference. Result has 109 places, 129 transitions, 578 flow [2025-02-08 14:10:03,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=578, PETRI_PLACES=109, PETRI_TRANSITIONS=129} [2025-02-08 14:10:03,272 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 30 predicate places. [2025-02-08 14:10:03,273 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 129 transitions, 578 flow [2025-02-08 14:10:03,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2025-02-08 14:10:03,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:03,273 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:10:03,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 14:10:03,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:10:03,474 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 14:10:03,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash -708248738, now seen corresponding path program 1 times [2025-02-08 14:10:03,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:03,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289922096] [2025-02-08 14:10:03,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:03,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:03,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:10:03,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:10:03,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:03,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:10:03,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:03,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289922096] [2025-02-08 14:10:03,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289922096] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:10:03,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:10:03,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:10:03,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294081695] [2025-02-08 14:10:03,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:10:03,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:10:03,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:03,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:10:03,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:10:03,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2025-02-08 14:10:03,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 129 transitions, 578 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2025-02-08 14:10:03,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:03,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2025-02-08 14:10:03,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:08,344 INFO L124 PetriNetUnfolderBase]: 51228/92552 cut-off events. [2025-02-08 14:10:08,345 INFO L125 PetriNetUnfolderBase]: For 19516/19708 co-relation queries the response was YES. [2025-02-08 14:10:08,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181294 conditions, 92552 events. 51228/92552 cut-off events. For 19516/19708 co-relation queries the response was YES. Maximal size of possible extension queue 3261. Compared 922793 event pairs, 29904 based on Foata normal form. 872/81092 useless extension candidates. Maximal degree in co-relation 181269. Up to 43607 conditions per place. [2025-02-08 14:10:09,220 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 150 selfloop transitions, 30 changer transitions 0/217 dead transitions. [2025-02-08 14:10:09,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 217 transitions, 1254 flow [2025-02-08 14:10:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:10:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:10:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 361 transitions. [2025-02-08 14:10:09,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6760299625468165 [2025-02-08 14:10:09,222 INFO L175 Difference]: Start difference. First operand has 109 places, 129 transitions, 578 flow. Second operand 6 states and 361 transitions. [2025-02-08 14:10:09,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 217 transitions, 1254 flow [2025-02-08 14:10:09,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 217 transitions, 1253 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:10:09,364 INFO L231 Difference]: Finished difference. Result has 116 places, 153 transitions, 877 flow [2025-02-08 14:10:09,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=877, PETRI_PLACES=116, PETRI_TRANSITIONS=153} [2025-02-08 14:10:09,365 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 37 predicate places. [2025-02-08 14:10:09,365 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 153 transitions, 877 flow [2025-02-08 14:10:09,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2025-02-08 14:10:09,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:09,365 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:10:09,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 14:10:09,365 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-02-08 14:10:09,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:09,366 INFO L85 PathProgramCache]: Analyzing trace with hash -340905971, now seen corresponding path program 1 times [2025-02-08 14:10:09,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:09,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441698396] [2025-02-08 14:10:09,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:09,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:10:09,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:10:09,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:09,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:09,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:09,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441698396] [2025-02-08 14:10:09,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441698396] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:10:09,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:10:09,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:10:09,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329011848] [2025-02-08 14:10:09,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:10:09,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:10:09,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:09,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:10:09,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:10:09,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 89 [2025-02-08 14:10:09,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 153 transitions, 877 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2025-02-08 14:10:09,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:09,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 89 [2025-02-08 14:10:09,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand