./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:42:17,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:42:17,359 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:42:17,363 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:42:17,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:42:17,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:42:17,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:42:17,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:42:17,381 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:42:17,382 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:42:17,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:42:17,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:42:17,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:42:17,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:42:17,382 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:42:17,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:42:17,383 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:42:17,383 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:42:17,383 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:42:17,383 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:42:17,384 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:42:17,384 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:42:17,384 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:42:17,384 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:42:17,384 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:42:17,384 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:42:17,384 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:42:17,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:42:17,384 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:42:17,385 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:42:17,385 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:42:17,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:42:17,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:42:17,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:42:17,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:42:17,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:42:17,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:42:17,386 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:42:17,386 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:42:17,386 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:42:17,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:42:17,386 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:42:17,386 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:42:17,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:42:17,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:42:17,386 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2025-03-09 06:42:17,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:42:17,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:42:17,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:42:17,596 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:42:17,596 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:42:17,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2025-03-09 06:42:18,826 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1fca0df9/0073540502084a5697857d7bfd09a34e/FLAG00613d08d [2025-03-09 06:42:19,065 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:42:19,066 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2025-03-09 06:42:19,075 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1fca0df9/0073540502084a5697857d7bfd09a34e/FLAG00613d08d [2025-03-09 06:42:19,096 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1fca0df9/0073540502084a5697857d7bfd09a34e [2025-03-09 06:42:19,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:42:19,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:42:19,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:42:19,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:42:19,109 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:42:19,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12aa5370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19, skipping insertion in model container [2025-03-09 06:42:19,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,125 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:42:19,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:42:19,298 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:42:19,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:42:19,337 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:42:19,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19 WrapperNode [2025-03-09 06:42:19,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:42:19,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:42:19,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:42:19,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:42:19,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,370 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 222 [2025-03-09 06:42:19,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:42:19,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:42:19,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:42:19,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:42:19,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,379 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,392 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-09 06:42:19,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,392 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,401 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,403 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:42:19,409 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:42:19,409 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:42:19,410 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:42:19,410 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (1/1) ... [2025-03-09 06:42:19,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:42:19,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:19,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:42:19,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:42:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:42:19,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:42:19,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:42:19,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:42:19,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:42:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:42:19,465 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:42:19,551 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:42:19,553 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:42:19,917 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:42:19,917 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:42:20,254 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:42:20,256 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:42:20,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:42:20 BoogieIcfgContainer [2025-03-09 06:42:20,256 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:42:20,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:42:20,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:42:20,262 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:42:20,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:42:19" (1/3) ... [2025-03-09 06:42:20,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af96aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:42:20, skipping insertion in model container [2025-03-09 06:42:20,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:19" (2/3) ... [2025-03-09 06:42:20,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af96aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:42:20, skipping insertion in model container [2025-03-09 06:42:20,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:42:20" (3/3) ... [2025-03-09 06:42:20,265 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2025-03-09 06:42:20,279 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:42:20,280 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-array-sum-alt2.wvr.c that has 4 procedures, 62 locations, 1 initial locations, 4 loop locations, and 26 error locations. [2025-03-09 06:42:20,280 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:42:20,379 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 06:42:20,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 65 transitions, 151 flow [2025-03-09 06:42:20,450 INFO L124 PetriNetUnfolderBase]: 4/62 cut-off events. [2025-03-09 06:42:20,451 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 06:42:20,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 4/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 217 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2025-03-09 06:42:20,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 65 transitions, 151 flow [2025-03-09 06:42:20,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 60 transitions, 135 flow [2025-03-09 06:42:20,472 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:42:20,482 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;@31ad85fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:42:20,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2025-03-09 06:42:20,486 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:42:20,488 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:42:20,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:42:20,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:20,489 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:42:20,490 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:20,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:20,494 INFO L85 PathProgramCache]: Analyzing trace with hash 696622, now seen corresponding path program 1 times [2025-03-09 06:42:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:20,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101232975] [2025-03-09 06:42:20,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:20,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:20,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:42:20,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:42:20,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:20,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:20,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:20,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101232975] [2025-03-09 06:42:20,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101232975] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:20,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:20,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:42:20,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357101395] [2025-03-09 06:42:20,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:20,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:42:20,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:20,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:42:20,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:42:20,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2025-03-09 06:42:20,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:20,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:20,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2025-03-09 06:42:20,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:21,568 INFO L124 PetriNetUnfolderBase]: 2971/4905 cut-off events. [2025-03-09 06:42:21,569 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2025-03-09 06:42:21,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9346 conditions, 4905 events. 2971/4905 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 34373 event pairs, 2534 based on Foata normal form. 1/2990 useless extension candidates. Maximal degree in co-relation 8829. Up to 4217 conditions per place. [2025-03-09 06:42:21,615 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 37 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2025-03-09 06:42:21,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 211 flow [2025-03-09 06:42:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:42:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:42:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2025-03-09 06:42:21,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2025-03-09 06:42:21,630 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 135 flow. Second operand 4 states and 125 transitions. [2025-03-09 06:42:21,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 211 flow [2025-03-09 06:42:21,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 202 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 06:42:21,640 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 143 flow [2025-03-09 06:42:21,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2025-03-09 06:42:21,645 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2025-03-09 06:42:21,645 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 143 flow [2025-03-09 06:42:21,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:21,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:21,646 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:42:21,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:42:21,646 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:21,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:21,647 INFO L85 PathProgramCache]: Analyzing trace with hash -721154580, now seen corresponding path program 1 times [2025-03-09 06:42:21,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:21,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246779487] [2025-03-09 06:42:21,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:21,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:21,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:42:21,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:42:21,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:21,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:21,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:21,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246779487] [2025-03-09 06:42:21,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246779487] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:21,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103696635] [2025-03-09 06:42:21,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:21,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:21,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:21,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:21,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:42:21,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:42:21,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:42:21,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:21,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:21,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:42:21,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:21,927 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:42:21,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103696635] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:21,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:42:21,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:42:21,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841100080] [2025-03-09 06:42:21,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:21,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:42:21,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:21,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:42:21,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:42:21,939 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2025-03-09 06:42:21,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:21,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:21,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2025-03-09 06:42:21,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:22,586 INFO L124 PetriNetUnfolderBase]: 2971/4904 cut-off events. [2025-03-09 06:42:22,587 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2025-03-09 06:42:22,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9274 conditions, 4904 events. 2971/4904 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 34403 event pairs, 2534 based on Foata normal form. 1/2990 useless extension candidates. Maximal degree in co-relation 9247. Up to 4212 conditions per place. [2025-03-09 06:42:22,618 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 33 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2025-03-09 06:42:22,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 219 flow [2025-03-09 06:42:22,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:42:22,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:42:22,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2025-03-09 06:42:22,620 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2025-03-09 06:42:22,620 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 143 flow. Second operand 6 states and 155 transitions. [2025-03-09 06:42:22,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 219 flow [2025-03-09 06:42:22,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:42:22,622 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 150 flow [2025-03-09 06:42:22,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2025-03-09 06:42:22,622 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2025-03-09 06:42:22,622 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 150 flow [2025-03-09 06:42:22,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:22,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:22,623 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 06:42:22,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:42:22,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:22,827 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:22,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:22,828 INFO L85 PathProgramCache]: Analyzing trace with hash -718716887, now seen corresponding path program 1 times [2025-03-09 06:42:22,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:22,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626288693] [2025-03-09 06:42:22,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:22,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:22,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:42:22,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:42:22,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:22,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:22,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:22,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626288693] [2025-03-09 06:42:22,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626288693] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:22,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:22,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:42:22,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535872425] [2025-03-09 06:42:22,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:22,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:42:22,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:22,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:42:22,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:42:22,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2025-03-09 06:42:22,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:22,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:22,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2025-03-09 06:42:22,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:23,679 INFO L124 PetriNetUnfolderBase]: 4377/7257 cut-off events. [2025-03-09 06:42:23,680 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2025-03-09 06:42:23,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13763 conditions, 7257 events. 4377/7257 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 52156 event pairs, 3263 based on Foata normal form. 0/4517 useless extension candidates. Maximal degree in co-relation 10358. Up to 4714 conditions per place. [2025-03-09 06:42:23,717 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 82 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2025-03-09 06:42:23,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 103 transitions, 427 flow [2025-03-09 06:42:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:42:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:42:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2025-03-09 06:42:23,719 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5784615384615385 [2025-03-09 06:42:23,719 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 150 flow. Second operand 5 states and 188 transitions. [2025-03-09 06:42:23,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 103 transitions, 427 flow [2025-03-09 06:42:23,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 405 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-03-09 06:42:23,723 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 153 flow [2025-03-09 06:42:23,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2025-03-09 06:42:23,724 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2025-03-09 06:42:23,724 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 153 flow [2025-03-09 06:42:23,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:23,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:23,725 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:42:23,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:42:23,725 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:23,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:23,725 INFO L85 PathProgramCache]: Analyzing trace with hash -880954881, now seen corresponding path program 1 times [2025-03-09 06:42:23,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:23,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275950462] [2025-03-09 06:42:23,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:23,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:23,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:42:23,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:42:23,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:23,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:23,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:23,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:23,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275950462] [2025-03-09 06:42:23,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275950462] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:23,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889690735] [2025-03-09 06:42:23,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:23,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:23,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:23,808 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:23,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:42:23,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:42:23,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:42:23,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:23,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:23,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:42:23,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:23,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:23,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889690735] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:23,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:23,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:42:23,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083305623] [2025-03-09 06:42:23,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:23,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:42:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:23,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:42:23,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:42:23,969 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2025-03-09 06:42:23,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 153 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:23,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:23,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2025-03-09 06:42:23,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:24,620 INFO L124 PetriNetUnfolderBase]: 4026/6744 cut-off events. [2025-03-09 06:42:24,621 INFO L125 PetriNetUnfolderBase]: For 1219/1323 co-relation queries the response was YES. [2025-03-09 06:42:24,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13644 conditions, 6744 events. 4026/6744 cut-off events. For 1219/1323 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 49241 event pairs, 3468 based on Foata normal form. 3/4225 useless extension candidates. Maximal degree in co-relation 9607. Up to 5782 conditions per place. [2025-03-09 06:42:24,657 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 38 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2025-03-09 06:42:24,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 285 flow [2025-03-09 06:42:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:42:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:42:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2025-03-09 06:42:24,661 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3723076923076923 [2025-03-09 06:42:24,661 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 153 flow. Second operand 10 states and 242 transitions. [2025-03-09 06:42:24,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 285 flow [2025-03-09 06:42:24,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:42:24,663 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 222 flow [2025-03-09 06:42:24,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=222, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2025-03-09 06:42:24,666 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2025-03-09 06:42:24,666 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 222 flow [2025-03-09 06:42:24,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:24,667 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:24,668 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:24,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 06:42:24,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-09 06:42:24,868 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:24,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash 751657040, now seen corresponding path program 1 times [2025-03-09 06:42:24,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:24,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950622877] [2025-03-09 06:42:24,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:24,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:24,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:42:24,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:42:24,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:24,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:24,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:24,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950622877] [2025-03-09 06:42:24,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950622877] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:24,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:24,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:42:24,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107414951] [2025-03-09 06:42:24,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:24,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:42:24,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:24,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:42:24,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:42:24,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2025-03-09 06:42:24,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:24,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:24,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2025-03-09 06:42:24,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:25,658 INFO L124 PetriNetUnfolderBase]: 3682/6177 cut-off events. [2025-03-09 06:42:25,659 INFO L125 PetriNetUnfolderBase]: For 775/937 co-relation queries the response was YES. [2025-03-09 06:42:25,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12234 conditions, 6177 events. 3682/6177 cut-off events. For 775/937 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 43149 event pairs, 3023 based on Foata normal form. 0/3827 useless extension candidates. Maximal degree in co-relation 12198. Up to 4743 conditions per place. [2025-03-09 06:42:25,680 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 76 selfloop transitions, 5 changer transitions 2/99 dead transitions. [2025-03-09 06:42:25,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 469 flow [2025-03-09 06:42:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:42:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:42:25,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-03-09 06:42:25,682 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-03-09 06:42:25,682 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 222 flow. Second operand 5 states and 175 transitions. [2025-03-09 06:42:25,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 469 flow [2025-03-09 06:42:25,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 458 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-09 06:42:25,684 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 236 flow [2025-03-09 06:42:25,684 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2025-03-09 06:42:25,684 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2025-03-09 06:42:25,685 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 236 flow [2025-03-09 06:42:25,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:25,685 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:25,685 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:25,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:42:25,685 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:25,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:25,685 INFO L85 PathProgramCache]: Analyzing trace with hash -486624595, now seen corresponding path program 1 times [2025-03-09 06:42:25,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:25,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256249370] [2025-03-09 06:42:25,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:25,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:25,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:42:25,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:42:25,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:25,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:42:25,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:25,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256249370] [2025-03-09 06:42:25,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256249370] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:25,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:25,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:42:25,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814388522] [2025-03-09 06:42:25,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:25,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:42:25,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:25,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:42:25,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:42:25,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-03-09 06:42:25,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:25,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:25,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-03-09 06:42:25,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:26,320 INFO L124 PetriNetUnfolderBase]: 5012/8490 cut-off events. [2025-03-09 06:42:26,321 INFO L125 PetriNetUnfolderBase]: For 1451/1716 co-relation queries the response was YES. [2025-03-09 06:42:26,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17501 conditions, 8490 events. 5012/8490 cut-off events. For 1451/1716 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 64387 event pairs, 2213 based on Foata normal form. 0/5264 useless extension candidates. Maximal degree in co-relation 17463. Up to 3766 conditions per place. [2025-03-09 06:42:26,358 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 77 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2025-03-09 06:42:26,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 463 flow [2025-03-09 06:42:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:42:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:42:26,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2025-03-09 06:42:26,360 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6564102564102564 [2025-03-09 06:42:26,360 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 236 flow. Second operand 3 states and 128 transitions. [2025-03-09 06:42:26,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 463 flow [2025-03-09 06:42:26,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:42:26,363 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 253 flow [2025-03-09 06:42:26,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2025-03-09 06:42:26,364 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2025-03-09 06:42:26,364 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 253 flow [2025-03-09 06:42:26,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:26,364 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:26,364 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:26,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:42:26,365 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:26,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:26,365 INFO L85 PathProgramCache]: Analyzing trace with hash -486624594, now seen corresponding path program 1 times [2025-03-09 06:42:26,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:26,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945429703] [2025-03-09 06:42:26,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:26,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:26,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:42:26,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:42:26,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:26,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:42:26,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:26,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945429703] [2025-03-09 06:42:26,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945429703] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:26,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:26,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:42:26,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674389764] [2025-03-09 06:42:26,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:26,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:42:26,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:26,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:42:26,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:42:26,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-03-09 06:42:26,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:26,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:26,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-03-09 06:42:26,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:27,025 INFO L124 PetriNetUnfolderBase]: 4866/8395 cut-off events. [2025-03-09 06:42:27,025 INFO L125 PetriNetUnfolderBase]: For 2598/2861 co-relation queries the response was YES. [2025-03-09 06:42:27,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18150 conditions, 8395 events. 4866/8395 cut-off events. For 2598/2861 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 63921 event pairs, 2213 based on Foata normal form. 144/5919 useless extension candidates. Maximal degree in co-relation 18111. Up to 3620 conditions per place. [2025-03-09 06:42:27,065 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 76 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2025-03-09 06:42:27,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 470 flow [2025-03-09 06:42:27,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:42:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:42:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2025-03-09 06:42:27,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6512820512820513 [2025-03-09 06:42:27,066 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 253 flow. Second operand 3 states and 127 transitions. [2025-03-09 06:42:27,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 470 flow [2025-03-09 06:42:27,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 96 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:42:27,072 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 249 flow [2025-03-09 06:42:27,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2025-03-09 06:42:27,072 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2025-03-09 06:42:27,072 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 249 flow [2025-03-09 06:42:27,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:27,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:27,073 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:27,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:42:27,073 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:27,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash -486624598, now seen corresponding path program 1 times [2025-03-09 06:42:27,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:27,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319055797] [2025-03-09 06:42:27,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:27,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:27,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:42:27,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:42:27,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:27,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:27,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319055797] [2025-03-09 06:42:27,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319055797] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771980141] [2025-03-09 06:42:27,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:27,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:27,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:27,239 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:27,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:42:27,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:42:27,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:42:27,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:27,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:27,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-09 06:42:27,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:27,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-09 06:42:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:27,369 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:27,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-09 06:42:27,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-03-09 06:42:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:27,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771980141] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:27,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:27,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-09 06:42:27,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990749610] [2025-03-09 06:42:27,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:27,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:42:27,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:27,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:42:27,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:42:27,458 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-03-09 06:42:27,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 249 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:27,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:27,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-03-09 06:42:27,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:28,482 INFO L124 PetriNetUnfolderBase]: 4866/8745 cut-off events. [2025-03-09 06:42:28,482 INFO L125 PetriNetUnfolderBase]: For 2552/2914 co-relation queries the response was YES. [2025-03-09 06:42:28,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18396 conditions, 8745 events. 4866/8745 cut-off events. For 2552/2914 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 70582 event pairs, 2012 based on Foata normal form. 0/6109 useless extension candidates. Maximal degree in co-relation 18357. Up to 2921 conditions per place. [2025-03-09 06:42:28,521 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 97 selfloop transitions, 16 changer transitions 1/131 dead transitions. [2025-03-09 06:42:28,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 621 flow [2025-03-09 06:42:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:42:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:42:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 274 transitions. [2025-03-09 06:42:28,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5269230769230769 [2025-03-09 06:42:28,525 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 249 flow. Second operand 8 states and 274 transitions. [2025-03-09 06:42:28,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 621 flow [2025-03-09 06:42:28,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 131 transitions, 621 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:42:28,537 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 310 flow [2025-03-09 06:42:28,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=310, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2025-03-09 06:42:28,538 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2025-03-09 06:42:28,538 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 310 flow [2025-03-09 06:42:28,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:28,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:28,538 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:28,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 06:42:28,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:28,741 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:28,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:28,741 INFO L85 PathProgramCache]: Analyzing trace with hash -486624597, now seen corresponding path program 1 times [2025-03-09 06:42:28,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:28,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328295321] [2025-03-09 06:42:28,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:28,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:28,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:42:28,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:42:28,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:28,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:28,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:28,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:28,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328295321] [2025-03-09 06:42:28,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328295321] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:28,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928917484] [2025-03-09 06:42:28,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:28,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:28,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:28,935 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:28,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:42:28,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:42:29,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:42:29,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:29,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:29,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-09 06:42:29,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:29,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-09 06:42:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:29,051 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:29,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-03-09 06:42:29,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-09 06:42:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:29,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928917484] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:29,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:29,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-03-09 06:42:29,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125464105] [2025-03-09 06:42:29,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:29,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 06:42:29,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:29,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:42:29,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-03-09 06:42:29,114 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-03-09 06:42:29,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 310 flow. Second operand has 13 states, 13 states have (on average 22.53846153846154) internal successors, (293), 13 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:29,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:29,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-03-09 06:42:29,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:29,864 INFO L124 PetriNetUnfolderBase]: 4512/7712 cut-off events. [2025-03-09 06:42:29,864 INFO L125 PetriNetUnfolderBase]: For 6576/6949 co-relation queries the response was YES. [2025-03-09 06:42:29,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19274 conditions, 7712 events. 4512/7712 cut-off events. For 6576/6949 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 56971 event pairs, 1382 based on Foata normal form. 146/5622 useless extension candidates. Maximal degree in co-relation 19231. Up to 2921 conditions per place. [2025-03-09 06:42:29,901 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 96 selfloop transitions, 16 changer transitions 1/130 dead transitions. [2025-03-09 06:42:29,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 130 transitions, 668 flow [2025-03-09 06:42:29,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:42:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:42:29,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 273 transitions. [2025-03-09 06:42:29,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2025-03-09 06:42:29,903 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 310 flow. Second operand 8 states and 273 transitions. [2025-03-09 06:42:29,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 130 transitions, 668 flow [2025-03-09 06:42:29,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 130 transitions, 639 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-03-09 06:42:29,908 INFO L231 Difference]: Finished difference. Result has 90 places, 72 transitions, 309 flow [2025-03-09 06:42:29,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=309, PETRI_PLACES=90, PETRI_TRANSITIONS=72} [2025-03-09 06:42:29,908 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2025-03-09 06:42:29,908 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 72 transitions, 309 flow [2025-03-09 06:42:29,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.53846153846154) internal successors, (293), 13 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:29,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:29,909 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:29,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:42:30,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:30,109 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:30,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:30,110 INFO L85 PathProgramCache]: Analyzing trace with hash 769498405, now seen corresponding path program 1 times [2025-03-09 06:42:30,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:30,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462307685] [2025-03-09 06:42:30,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:30,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:30,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:42:30,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:42:30,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:30,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:30,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:30,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462307685] [2025-03-09 06:42:30,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462307685] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:30,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:30,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:42:30,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989195511] [2025-03-09 06:42:30,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:30,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:42:30,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:30,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:42:30,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:42:30,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2025-03-09 06:42:30,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 72 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:30,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:30,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2025-03-09 06:42:30,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:30,786 INFO L124 PetriNetUnfolderBase]: 4769/7635 cut-off events. [2025-03-09 06:42:30,787 INFO L125 PetriNetUnfolderBase]: For 8585/9113 co-relation queries the response was YES. [2025-03-09 06:42:30,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19938 conditions, 7635 events. 4769/7635 cut-off events. For 8585/9113 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 52502 event pairs, 4132 based on Foata normal form. 0/5283 useless extension candidates. Maximal degree in co-relation 19896. Up to 6599 conditions per place. [2025-03-09 06:42:30,815 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 49 selfloop transitions, 2 changer transitions 22/89 dead transitions. [2025-03-09 06:42:30,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 511 flow [2025-03-09 06:42:30,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:42:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:42:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2025-03-09 06:42:30,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49846153846153846 [2025-03-09 06:42:30,817 INFO L175 Difference]: Start difference. First operand has 90 places, 72 transitions, 309 flow. Second operand 5 states and 162 transitions. [2025-03-09 06:42:30,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 511 flow [2025-03-09 06:42:30,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 496 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 06:42:30,821 INFO L231 Difference]: Finished difference. Result has 91 places, 67 transitions, 276 flow [2025-03-09 06:42:30,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=91, PETRI_TRANSITIONS=67} [2025-03-09 06:42:30,821 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 25 predicate places. [2025-03-09 06:42:30,822 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 67 transitions, 276 flow [2025-03-09 06:42:30,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:30,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:30,822 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:30,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:42:30,822 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:30,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:30,822 INFO L85 PathProgramCache]: Analyzing trace with hash 505223313, now seen corresponding path program 1 times [2025-03-09 06:42:30,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:30,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306844569] [2025-03-09 06:42:30,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:30,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:30,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:42:30,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:42:30,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:30,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:42:30,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:30,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306844569] [2025-03-09 06:42:30,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306844569] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:30,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:30,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:42:30,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709169432] [2025-03-09 06:42:30,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:30,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:42:30,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:30,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:42:30,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:42:30,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2025-03-09 06:42:30,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 67 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:30,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:30,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2025-03-09 06:42:30,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:31,535 INFO L124 PetriNetUnfolderBase]: 5587/8777 cut-off events. [2025-03-09 06:42:31,535 INFO L125 PetriNetUnfolderBase]: For 6514/7040 co-relation queries the response was YES. [2025-03-09 06:42:31,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22277 conditions, 8777 events. 5587/8777 cut-off events. For 6514/7040 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 61695 event pairs, 3933 based on Foata normal form. 292/6447 useless extension candidates. Maximal degree in co-relation 22247. Up to 6433 conditions per place. [2025-03-09 06:42:31,564 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 92 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2025-03-09 06:42:31,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 110 transitions, 576 flow [2025-03-09 06:42:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:42:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:42:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2025-03-09 06:42:31,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6115384615384616 [2025-03-09 06:42:31,565 INFO L175 Difference]: Start difference. First operand has 91 places, 67 transitions, 276 flow. Second operand 4 states and 159 transitions. [2025-03-09 06:42:31,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 110 transitions, 576 flow [2025-03-09 06:42:31,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 110 transitions, 538 flow, removed 17 selfloop flow, removed 7 redundant places. [2025-03-09 06:42:31,582 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 275 flow [2025-03-09 06:42:31,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2025-03-09 06:42:31,582 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2025-03-09 06:42:31,583 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 275 flow [2025-03-09 06:42:31,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:31,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:31,583 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:31,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:42:31,583 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:31,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:31,583 INFO L85 PathProgramCache]: Analyzing trace with hash 454048337, now seen corresponding path program 1 times [2025-03-09 06:42:31,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:31,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850995352] [2025-03-09 06:42:31,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:31,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:31,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:42:31,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:42:31,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:31,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:42:31,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850995352] [2025-03-09 06:42:31,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850995352] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:31,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:31,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:42:31,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915446589] [2025-03-09 06:42:31,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:31,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:42:31,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:31,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:42:31,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:42:31,654 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-03-09 06:42:31,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:31,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:31,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-03-09 06:42:31,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:32,253 INFO L124 PetriNetUnfolderBase]: 5773/9650 cut-off events. [2025-03-09 06:42:32,253 INFO L125 PetriNetUnfolderBase]: For 9858/9858 co-relation queries the response was YES. [2025-03-09 06:42:32,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24249 conditions, 9650 events. 5773/9650 cut-off events. For 9858/9858 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 72147 event pairs, 1694 based on Foata normal form. 0/6932 useless extension candidates. Maximal degree in co-relation 24215. Up to 5988 conditions per place. [2025-03-09 06:42:32,369 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 73 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2025-03-09 06:42:32,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 94 transitions, 540 flow [2025-03-09 06:42:32,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:42:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:42:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2025-03-09 06:42:32,371 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2025-03-09 06:42:32,371 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 275 flow. Second operand 3 states and 126 transitions. [2025-03-09 06:42:32,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 94 transitions, 540 flow [2025-03-09 06:42:32,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 94 transitions, 528 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:42:32,375 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 294 flow [2025-03-09 06:42:32,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2025-03-09 06:42:32,376 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2025-03-09 06:42:32,376 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 294 flow [2025-03-09 06:42:32,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:32,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:32,377 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:32,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:42:32,377 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:32,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:32,377 INFO L85 PathProgramCache]: Analyzing trace with hash 454048334, now seen corresponding path program 1 times [2025-03-09 06:42:32,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:32,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608080633] [2025-03-09 06:42:32,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:32,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:32,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:42:32,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:42:32,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:32,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:32,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:32,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:32,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608080633] [2025-03-09 06:42:32,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608080633] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:32,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735432292] [2025-03-09 06:42:32,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:32,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:32,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:32,533 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:32,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:42:32,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:42:32,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:42:32,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:32,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:32,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-09 06:42:32,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:32,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-09 06:42:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:32,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:32,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-09 06:42:32,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-03-09 06:42:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:32,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735432292] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:32,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:32,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-09 06:42:32,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483003437] [2025-03-09 06:42:32,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:32,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:42:32,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:32,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:42:32,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:42:32,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-03-09 06:42:32,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 294 flow. Second operand has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:32,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:32,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-03-09 06:42:32,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:33,753 INFO L124 PetriNetUnfolderBase]: 7770/13075 cut-off events. [2025-03-09 06:42:33,753 INFO L125 PetriNetUnfolderBase]: For 11257/11257 co-relation queries the response was YES. [2025-03-09 06:42:33,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34053 conditions, 13075 events. 7770/13075 cut-off events. For 11257/11257 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 103181 event pairs, 2108 based on Foata normal form. 0/10331 useless extension candidates. Maximal degree in co-relation 34017. Up to 4112 conditions per place. [2025-03-09 06:42:33,814 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 90 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2025-03-09 06:42:33,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 123 transitions, 739 flow [2025-03-09 06:42:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:42:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:42:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 253 transitions. [2025-03-09 06:42:33,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48653846153846153 [2025-03-09 06:42:33,816 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 294 flow. Second operand 8 states and 253 transitions. [2025-03-09 06:42:33,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 123 transitions, 739 flow [2025-03-09 06:42:33,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 123 transitions, 735 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:42:33,825 INFO L231 Difference]: Finished difference. Result has 92 places, 76 transitions, 366 flow [2025-03-09 06:42:33,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=92, PETRI_TRANSITIONS=76} [2025-03-09 06:42:33,826 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 26 predicate places. [2025-03-09 06:42:33,826 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 76 transitions, 366 flow [2025-03-09 06:42:33,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:33,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:33,826 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:33,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:42:34,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-09 06:42:34,027 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:34,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash 454048335, now seen corresponding path program 1 times [2025-03-09 06:42:34,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:34,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266477067] [2025-03-09 06:42:34,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:34,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:34,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:42:34,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:42:34,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:34,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:34,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:34,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266477067] [2025-03-09 06:42:34,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266477067] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:34,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638727149] [2025-03-09 06:42:34,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:34,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:34,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:34,199 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:34,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:42:34,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:42:34,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:42:34,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:34,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:34,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-09 06:42:34,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:34,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-09 06:42:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:34,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:34,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-03-09 06:42:34,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-09 06:42:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:34,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638727149] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:34,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:34,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-03-09 06:42:34,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464846625] [2025-03-09 06:42:34,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:34,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 06:42:34,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:34,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:42:34,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-03-09 06:42:34,385 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2025-03-09 06:42:34,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 76 transitions, 366 flow. Second operand has 13 states, 13 states have (on average 23.0) internal successors, (299), 13 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:34,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:34,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2025-03-09 06:42:34,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:35,585 INFO L124 PetriNetUnfolderBase]: 7018/11767 cut-off events. [2025-03-09 06:42:35,586 INFO L125 PetriNetUnfolderBase]: For 14446/14446 co-relation queries the response was YES. [2025-03-09 06:42:35,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35158 conditions, 11767 events. 7018/11767 cut-off events. For 14446/14446 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 90151 event pairs, 2026 based on Foata normal form. 310/9541 useless extension candidates. Maximal degree in co-relation 35117. Up to 3906 conditions per place. [2025-03-09 06:42:35,665 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 89 selfloop transitions, 15 changer transitions 0/122 dead transitions. [2025-03-09 06:42:35,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 122 transitions, 786 flow [2025-03-09 06:42:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:42:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:42:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2025-03-09 06:42:35,667 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2025-03-09 06:42:35,667 INFO L175 Difference]: Start difference. First operand has 92 places, 76 transitions, 366 flow. Second operand 8 states and 252 transitions. [2025-03-09 06:42:35,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 122 transitions, 786 flow [2025-03-09 06:42:35,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 122 transitions, 776 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:42:35,677 INFO L231 Difference]: Finished difference. Result has 95 places, 75 transitions, 382 flow [2025-03-09 06:42:35,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=382, PETRI_PLACES=95, PETRI_TRANSITIONS=75} [2025-03-09 06:42:35,678 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 29 predicate places. [2025-03-09 06:42:35,678 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 75 transitions, 382 flow [2025-03-09 06:42:35,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 23.0) internal successors, (299), 13 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:35,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:35,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:35,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 06:42:35,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:35,879 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:35,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:35,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1764622681, now seen corresponding path program 1 times [2025-03-09 06:42:35,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:35,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3711048] [2025-03-09 06:42:35,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:35,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:35,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:42:35,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:42:35,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:35,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:36,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:36,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3711048] [2025-03-09 06:42:36,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3711048] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:36,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601003467] [2025-03-09 06:42:36,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:36,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:36,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:36,131 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:36,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 06:42:36,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:42:36,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:42:36,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:36,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:36,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-09 06:42:36,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:36,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-09 06:42:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:36,489 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:36,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-03-09 06:42:36,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-03-09 06:42:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:36,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601003467] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:36,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:36,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2025-03-09 06:42:36,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167134448] [2025-03-09 06:42:36,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:36,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 06:42:36,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:36,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 06:42:36,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2025-03-09 06:42:36,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2025-03-09 06:42:36,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 75 transitions, 382 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:36,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:36,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2025-03-09 06:42:36,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:41,008 INFO L124 PetriNetUnfolderBase]: 28447/44320 cut-off events. [2025-03-09 06:42:41,008 INFO L125 PetriNetUnfolderBase]: For 70902/70902 co-relation queries the response was YES. [2025-03-09 06:42:41,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144123 conditions, 44320 events. 28447/44320 cut-off events. For 70902/70902 co-relation queries the response was YES. Maximal size of possible extension queue 2259. Compared 366596 event pairs, 10806 based on Foata normal form. 0/34011 useless extension candidates. Maximal degree in co-relation 144081. Up to 8965 conditions per place. [2025-03-09 06:42:41,304 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 284 selfloop transitions, 35 changer transitions 0/335 dead transitions. [2025-03-09 06:42:41,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 335 transitions, 2510 flow [2025-03-09 06:42:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:42:41,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:42:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 510 transitions. [2025-03-09 06:42:41,305 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2025-03-09 06:42:41,305 INFO L175 Difference]: Start difference. First operand has 95 places, 75 transitions, 382 flow. Second operand 15 states and 510 transitions. [2025-03-09 06:42:41,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 335 transitions, 2510 flow [2025-03-09 06:42:41,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 335 transitions, 2473 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 06:42:41,325 INFO L231 Difference]: Finished difference. Result has 109 places, 101 transitions, 575 flow [2025-03-09 06:42:41,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=575, PETRI_PLACES=109, PETRI_TRANSITIONS=101} [2025-03-09 06:42:41,326 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 43 predicate places. [2025-03-09 06:42:41,326 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 101 transitions, 575 flow [2025-03-09 06:42:41,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:41,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:41,326 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:41,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 06:42:41,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:41,527 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:41,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:41,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1764622680, now seen corresponding path program 1 times [2025-03-09 06:42:41,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:41,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50544831] [2025-03-09 06:42:41,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:41,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:41,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:42:41,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:42:41,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:41,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:41,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:41,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:41,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50544831] [2025-03-09 06:42:41,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50544831] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:41,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803607791] [2025-03-09 06:42:41,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:41,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:41,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:41,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:41,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 06:42:41,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:42:41,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:42:41,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:41,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:41,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-09 06:42:41,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:41,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-09 06:42:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:42,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:42,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-09 06:42:42,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2025-03-09 06:42:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:42,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803607791] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:42,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:42,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2025-03-09 06:42:42,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886095003] [2025-03-09 06:42:42,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:42,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 06:42:42,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:42,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 06:42:42,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2025-03-09 06:42:42,379 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2025-03-09 06:42:42,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 101 transitions, 575 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:42,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:42,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2025-03-09 06:42:42,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:47,897 INFO L124 PetriNetUnfolderBase]: 27421/42952 cut-off events. [2025-03-09 06:42:47,898 INFO L125 PetriNetUnfolderBase]: For 71449/71449 co-relation queries the response was YES. [2025-03-09 06:42:48,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155381 conditions, 42952 events. 27421/42952 cut-off events. For 71449/71449 co-relation queries the response was YES. Maximal size of possible extension queue 2188. Compared 358382 event pairs, 10806 based on Foata normal form. 536/34735 useless extension candidates. Maximal degree in co-relation 155333. Up to 8845 conditions per place. [2025-03-09 06:42:48,607 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 282 selfloop transitions, 35 changer transitions 0/333 dead transitions. [2025-03-09 06:42:48,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 333 transitions, 2615 flow [2025-03-09 06:42:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:42:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:42:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 508 transitions. [2025-03-09 06:42:48,609 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.521025641025641 [2025-03-09 06:42:48,609 INFO L175 Difference]: Start difference. First operand has 109 places, 101 transitions, 575 flow. Second operand 15 states and 508 transitions. [2025-03-09 06:42:48,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 333 transitions, 2615 flow [2025-03-09 06:42:48,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 333 transitions, 2606 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:42:48,841 INFO L231 Difference]: Finished difference. Result has 119 places, 101 transitions, 640 flow [2025-03-09 06:42:48,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=640, PETRI_PLACES=119, PETRI_TRANSITIONS=101} [2025-03-09 06:42:48,841 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 53 predicate places. [2025-03-09 06:42:48,842 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 101 transitions, 640 flow [2025-03-09 06:42:48,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:48,842 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:48,842 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:48,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 06:42:49,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-09 06:42:49,043 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:49,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1746188011, now seen corresponding path program 1 times [2025-03-09 06:42:49,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:49,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327548415] [2025-03-09 06:42:49,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:49,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:49,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:42:49,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:42:49,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:49,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:42:49,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:49,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327548415] [2025-03-09 06:42:49,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327548415] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:49,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:49,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:42:49,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227194947] [2025-03-09 06:42:49,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:49,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:42:49,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:49,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:42:49,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:42:49,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2025-03-09 06:42:49,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 101 transitions, 640 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:49,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:49,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2025-03-09 06:42:49,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:54,206 INFO L124 PetriNetUnfolderBase]: 31490/48647 cut-off events. [2025-03-09 06:42:54,206 INFO L125 PetriNetUnfolderBase]: For 97865/98901 co-relation queries the response was YES. [2025-03-09 06:42:54,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179847 conditions, 48647 events. 31490/48647 cut-off events. For 97865/98901 co-relation queries the response was YES. Maximal size of possible extension queue 2358. Compared 399570 event pairs, 16725 based on Foata normal form. 1868/42438 useless extension candidates. Maximal degree in co-relation 179798. Up to 31809 conditions per place. [2025-03-09 06:42:54,717 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 175 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2025-03-09 06:42:54,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 196 transitions, 1617 flow [2025-03-09 06:42:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:42:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:42:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2025-03-09 06:42:54,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6115384615384616 [2025-03-09 06:42:54,718 INFO L175 Difference]: Start difference. First operand has 119 places, 101 transitions, 640 flow. Second operand 4 states and 159 transitions. [2025-03-09 06:42:54,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 196 transitions, 1617 flow [2025-03-09 06:42:55,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 196 transitions, 1549 flow, removed 15 selfloop flow, removed 9 redundant places. [2025-03-09 06:42:55,194 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 625 flow [2025-03-09 06:42:55,195 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=625, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2025-03-09 06:42:55,197 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 49 predicate places. [2025-03-09 06:42:55,198 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 625 flow [2025-03-09 06:42:55,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:55,198 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:55,198 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:55,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-09 06:42:55,198 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:42:55,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1542966376, now seen corresponding path program 1 times [2025-03-09 06:42:55,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:55,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967173361] [2025-03-09 06:42:55,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:55,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:55,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:42:55,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:42:55,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:55,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:55,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:55,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:55,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967173361] [2025-03-09 06:42:55,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967173361] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:55,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070222233] [2025-03-09 06:42:55,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:55,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:55,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:55,319 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:55,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 06:42:55,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:42:55,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:42:55,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:55,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:55,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 06:42:55,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:55,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:55,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070222233] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:55,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:55,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-03-09 06:42:55,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538021478] [2025-03-09 06:42:55,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:55,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 06:42:55,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:55,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 06:42:55,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2025-03-09 06:42:55,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2025-03-09 06:42:55,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 625 flow. Second operand has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:55,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:55,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2025-03-09 06:42:55,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:00,483 INFO L124 PetriNetUnfolderBase]: 28635/43486 cut-off events. [2025-03-09 06:43:00,483 INFO L125 PetriNetUnfolderBase]: For 97450/98783 co-relation queries the response was YES. [2025-03-09 06:43:00,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166340 conditions, 43486 events. 28635/43486 cut-off events. For 97450/98783 co-relation queries the response was YES. Maximal size of possible extension queue 1932. Compared 339076 event pairs, 20708 based on Foata normal form. 689/35563 useless extension candidates. Maximal degree in co-relation 166291. Up to 30864 conditions per place. [2025-03-09 06:43:00,930 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 201 selfloop transitions, 16 changer transitions 0/232 dead transitions. [2025-03-09 06:43:00,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 232 transitions, 1830 flow [2025-03-09 06:43:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:43:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:43:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 291 transitions. [2025-03-09 06:43:00,931 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44769230769230767 [2025-03-09 06:43:00,931 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 625 flow. Second operand 10 states and 291 transitions. [2025-03-09 06:43:00,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 232 transitions, 1830 flow [2025-03-09 06:43:01,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 232 transitions, 1800 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:43:01,091 INFO L231 Difference]: Finished difference. Result has 126 places, 107 transitions, 705 flow [2025-03-09 06:43:01,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=705, PETRI_PLACES=126, PETRI_TRANSITIONS=107} [2025-03-09 06:43:01,091 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 60 predicate places. [2025-03-09 06:43:01,091 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 107 transitions, 705 flow [2025-03-09 06:43:01,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:43:01,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:01,091 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:01,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 06:43:01,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 06:43:01,292 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2025-03-09 06:43:01,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash 709713166, now seen corresponding path program 1 times [2025-03-09 06:43:01,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:01,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130671897] [2025-03-09 06:43:01,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:01,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:01,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:43:01,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:43:01,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:01,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:43:01,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:01,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130671897] [2025-03-09 06:43:01,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130671897] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:01,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:01,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:43:01,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372112403] [2025-03-09 06:43:01,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:01,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:43:01,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:01,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:43:01,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:43:01,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2025-03-09 06:43:01,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 107 transitions, 705 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:43:01,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:01,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2025-03-09 06:43:01,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand