./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 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/parallel-misc-1.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 faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:26:30,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:26:30,533 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:26:30,537 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:26:30,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:26:30,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:26:30,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:26:30,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:26:30,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:26:30,562 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:26:30,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:26:30,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:26:30,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:26:30,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:26:30,564 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:26:30,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:26:30,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:26:30,565 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:26:30,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:26:30,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:26:30,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:26:30,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:26:30,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:26:30,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:26:30,565 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:26:30,565 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:26:30,565 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:26:30,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:26:30,566 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:26:30,566 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:26:30,566 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:26:30,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:26:30,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:26:30,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:26:30,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:26:30,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:26:30,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:26:30,567 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:26:30,567 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:26:30,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:26:30,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:26:30,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:26:30,567 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:26:30,567 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:26:30,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:26:30,567 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 -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2025-03-04 15:26:30,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:26:30,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:26:30,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:26:30,800 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:26:30,800 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:26:30,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2025-03-04 15:26:31,946 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64a933b43/e8459df2e34d41da9cd8eb8704d94aae/FLAG26d8794c9 [2025-03-04 15:26:32,169 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:26:32,170 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2025-03-04 15:26:32,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64a933b43/e8459df2e34d41da9cd8eb8704d94aae/FLAG26d8794c9 [2025-03-04 15:26:32,185 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64a933b43/e8459df2e34d41da9cd8eb8704d94aae [2025-03-04 15:26:32,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:26:32,188 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:26:32,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:26:32,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:26:32,193 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:26:32,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231721eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32, skipping insertion in model container [2025-03-04 15:26:32,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,207 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:26:32,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:26:32,333 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:26:32,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:26:32,367 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:26:32,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32 WrapperNode [2025-03-04 15:26:32,367 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:26:32,368 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:26:32,368 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:26:32,368 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:26:32,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,412 INFO L138 Inliner]: procedures = 22, calls = 32, calls flagged for inlining = 18, calls inlined = 32, statements flattened = 388 [2025-03-04 15:26:32,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:26:32,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:26:32,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:26:32,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:26:32,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,422 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,433 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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]. [2025-03-04 15:26:32,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,439 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:26:32,445 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:26:32,445 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:26:32,445 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:26:32,445 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (1/1) ... [2025-03-04 15:26:32,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:26:32,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:32,476 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) [2025-03-04 15:26:32,478 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 [2025-03-04 15:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:26:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:26:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 15:26:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:26:32,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:26:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:26:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:26:32,499 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:26:32,570 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:26:32,572 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:26:33,102 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:26:33,102 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:26:33,339 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:26:33,339 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:26:33,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:26:33 BoogieIcfgContainer [2025-03-04 15:26:33,339 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:26:33,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:26:33,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:26:33,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:26:33,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:26:32" (1/3) ... [2025-03-04 15:26:33,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e28e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:26:33, skipping insertion in model container [2025-03-04 15:26:33,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:32" (2/3) ... [2025-03-04 15:26:33,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e28e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:26:33, skipping insertion in model container [2025-03-04 15:26:33,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:26:33" (3/3) ... [2025-03-04 15:26:33,347 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2025-03-04 15:26:33,360 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:26:33,362 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-1.wvr.c that has 3 procedures, 160 locations, 1 initial locations, 3 loop locations, and 54 error locations. [2025-03-04 15:26:33,363 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:26:33,440 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 15:26:33,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 374 flow [2025-03-04 15:26:33,540 INFO L124 PetriNetUnfolderBase]: 21/178 cut-off events. [2025-03-04 15:26:33,542 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:26:33,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 21/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 847 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2025-03-04 15:26:33,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 180 transitions, 374 flow [2025-03-04 15:26:33,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 176 transitions, 361 flow [2025-03-04 15:26:33,567 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:26:33,578 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;@485fcdab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:26:33,580 INFO L334 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2025-03-04 15:26:33,583 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:26:33,585 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-04 15:26:33,585 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:26:33,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:33,585 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 15:26:33,586 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:26:33,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1166425, now seen corresponding path program 1 times [2025-03-04 15:26:33,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:33,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492373235] [2025-03-04 15:26:33,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:33,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:33,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 15:26:33,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 15:26:33,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:33,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:33,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492373235] [2025-03-04 15:26:33,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492373235] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:33,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:33,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:26:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509109193] [2025-03-04 15:26:33,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:33,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:33,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:33,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:33,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:33,814 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2025-03-04 15:26:33,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 176 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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) [2025-03-04 15:26:33,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:33,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2025-03-04 15:26:33,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:34,443 INFO L124 PetriNetUnfolderBase]: 2272/5770 cut-off events. [2025-03-04 15:26:34,443 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2025-03-04 15:26:34,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9090 conditions, 5770 events. 2272/5770 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 53366 event pairs, 1252 based on Foata normal form. 1/4377 useless extension candidates. Maximal degree in co-relation 8938. Up to 3248 conditions per place. [2025-03-04 15:26:34,474 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 56 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2025-03-04 15:26:34,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 175 transitions, 479 flow [2025-03-04 15:26:34,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 529 transitions. [2025-03-04 15:26:34,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7347222222222223 [2025-03-04 15:26:34,489 INFO L175 Difference]: Start difference. First operand has 162 places, 176 transitions, 361 flow. Second operand 4 states and 529 transitions. [2025-03-04 15:26:34,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 175 transitions, 479 flow [2025-03-04 15:26:34,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 175 transitions, 474 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:34,501 INFO L231 Difference]: Finished difference. Result has 161 places, 175 transitions, 362 flow [2025-03-04 15:26:34,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=161, PETRI_TRANSITIONS=175} [2025-03-04 15:26:34,506 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -1 predicate places. [2025-03-04 15:26:34,507 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 175 transitions, 362 flow [2025-03-04 15:26:34,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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) [2025-03-04 15:26:34,507 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:34,507 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-04 15:26:34,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:26:34,508 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:26:34,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:34,509 INFO L85 PathProgramCache]: Analyzing trace with hash 36160197, now seen corresponding path program 1 times [2025-03-04 15:26:34,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:34,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632999781] [2025-03-04 15:26:34,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:34,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:34,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 15:26:34,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 15:26:34,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:34,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:34,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:34,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632999781] [2025-03-04 15:26:34,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632999781] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:34,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:34,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:26:34,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439874194] [2025-03-04 15:26:34,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:34,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:34,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:34,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:34,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:34,614 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2025-03-04 15:26:34,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 175 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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) [2025-03-04 15:26:34,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:34,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2025-03-04 15:26:34,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:35,111 INFO L124 PetriNetUnfolderBase]: 2273/5774 cut-off events. [2025-03-04 15:26:35,112 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-03-04 15:26:35,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9081 conditions, 5774 events. 2273/5774 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 53386 event pairs, 1252 based on Foata normal form. 1/4381 useless extension candidates. Maximal degree in co-relation 9053. Up to 3253 conditions per place. [2025-03-04 15:26:35,139 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 59 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2025-03-04 15:26:35,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 178 transitions, 500 flow [2025-03-04 15:26:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:35,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 532 transitions. [2025-03-04 15:26:35,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7388888888888889 [2025-03-04 15:26:35,142 INFO L175 Difference]: Start difference. First operand has 161 places, 175 transitions, 362 flow. Second operand 4 states and 532 transitions. [2025-03-04 15:26:35,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 178 transitions, 500 flow [2025-03-04 15:26:35,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 178 transitions, 486 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:35,148 INFO L231 Difference]: Finished difference. Result has 163 places, 178 transitions, 381 flow [2025-03-04 15:26:35,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=163, PETRI_TRANSITIONS=178} [2025-03-04 15:26:35,149 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 1 predicate places. [2025-03-04 15:26:35,149 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 178 transitions, 381 flow [2025-03-04 15:26:35,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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) [2025-03-04 15:26:35,150 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:35,150 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-04 15:26:35,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:26:35,150 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:26:35,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:35,151 INFO L85 PathProgramCache]: Analyzing trace with hash -787206697, now seen corresponding path program 1 times [2025-03-04 15:26:35,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:35,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096914484] [2025-03-04 15:26:35,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:35,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:35,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:26:35,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:26:35,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:35,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:35,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:35,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096914484] [2025-03-04 15:26:35,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096914484] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:35,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825985638] [2025-03-04 15:26:35,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:35,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:35,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:35,267 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) [2025-03-04 15:26:35,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:26:35,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:26:35,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:26:35,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:35,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:35,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:26:35,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:35,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:26:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:35,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825985638] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:26:35,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:26:35,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-04 15:26:35,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310419364] [2025-03-04 15:26:35,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:26:35,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:26:35,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:35,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:26:35,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:26:35,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 180 [2025-03-04 15:26:35,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 178 transitions, 381 flow. Second operand has 10 states, 10 states have (on average 118.0) internal successors, (1180), 10 states have internal predecessors, (1180), 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) [2025-03-04 15:26:35,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:35,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 180 [2025-03-04 15:26:35,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:35,927 INFO L124 PetriNetUnfolderBase]: 2276/5786 cut-off events. [2025-03-04 15:26:35,928 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-03-04 15:26:35,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9117 conditions, 5786 events. 2276/5786 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 53537 event pairs, 1252 based on Foata normal form. 0/4389 useless extension candidates. Maximal degree in co-relation 9060. Up to 3256 conditions per place. [2025-03-04 15:26:35,959 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 59 selfloop transitions, 13 changer transitions 0/187 dead transitions. [2025-03-04 15:26:35,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 187 transitions, 561 flow [2025-03-04 15:26:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:26:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:26:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1245 transitions. [2025-03-04 15:26:35,987 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2025-03-04 15:26:35,987 INFO L175 Difference]: Start difference. First operand has 163 places, 178 transitions, 381 flow. Second operand 10 states and 1245 transitions. [2025-03-04 15:26:35,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 187 transitions, 561 flow [2025-03-04 15:26:35,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:35,995 INFO L231 Difference]: Finished difference. Result has 174 places, 187 transitions, 458 flow [2025-03-04 15:26:35,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=458, PETRI_PLACES=174, PETRI_TRANSITIONS=187} [2025-03-04 15:26:35,996 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2025-03-04 15:26:35,996 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 187 transitions, 458 flow [2025-03-04 15:26:35,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.0) internal successors, (1180), 10 states have internal predecessors, (1180), 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) [2025-03-04 15:26:35,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:35,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:36,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 15:26:36,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:36,198 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:26:36,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:36,199 INFO L85 PathProgramCache]: Analyzing trace with hash -449276280, now seen corresponding path program 1 times [2025-03-04 15:26:36,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:36,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652830270] [2025-03-04 15:26:36,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:36,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:26:36,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:26:36,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:36,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:36,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:36,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652830270] [2025-03-04 15:26:36,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652830270] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:36,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:36,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:36,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070702540] [2025-03-04 15:26:36,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:36,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:36,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:36,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:36,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:36,358 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2025-03-04 15:26:36,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 187 transitions, 458 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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) [2025-03-04 15:26:36,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:36,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2025-03-04 15:26:36,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:37,173 INFO L124 PetriNetUnfolderBase]: 5362/11192 cut-off events. [2025-03-04 15:26:37,173 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-03-04 15:26:37,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19239 conditions, 11192 events. 5362/11192 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 102410 event pairs, 1156 based on Foata normal form. 416/9273 useless extension candidates. Maximal degree in co-relation 19203. Up to 3742 conditions per place. [2025-03-04 15:26:37,223 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 143 selfloop transitions, 20 changer transitions 0/255 dead transitions. [2025-03-04 15:26:37,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 255 transitions, 924 flow [2025-03-04 15:26:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:37,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:37,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2025-03-04 15:26:37,225 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7541666666666667 [2025-03-04 15:26:37,225 INFO L175 Difference]: Start difference. First operand has 174 places, 187 transitions, 458 flow. Second operand 4 states and 543 transitions. [2025-03-04 15:26:37,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 255 transitions, 924 flow [2025-03-04 15:26:37,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 255 transitions, 894 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-03-04 15:26:37,229 INFO L231 Difference]: Finished difference. Result has 173 places, 195 transitions, 564 flow [2025-03-04 15:26:37,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=564, PETRI_PLACES=173, PETRI_TRANSITIONS=195} [2025-03-04 15:26:37,230 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 11 predicate places. [2025-03-04 15:26:37,230 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 195 transitions, 564 flow [2025-03-04 15:26:37,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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) [2025-03-04 15:26:37,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:37,230 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:37,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:26:37,231 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:26:37,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:37,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1042661634, now seen corresponding path program 1 times [2025-03-04 15:26:37,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:37,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871398266] [2025-03-04 15:26:37,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:37,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:37,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:26:37,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:26:37,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:37,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:37,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:37,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871398266] [2025-03-04 15:26:37,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871398266] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:37,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:37,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:37,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838073641] [2025-03-04 15:26:37,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:37,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:37,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:37,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:37,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:37,365 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-04 15:26:37,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 195 transitions, 564 flow. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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) [2025-03-04 15:26:37,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:37,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-04 15:26:37,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:38,546 INFO L124 PetriNetUnfolderBase]: 9410/21245 cut-off events. [2025-03-04 15:26:38,546 INFO L125 PetriNetUnfolderBase]: For 5944/6027 co-relation queries the response was YES. [2025-03-04 15:26:38,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41025 conditions, 21245 events. 9410/21245 cut-off events. For 5944/6027 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 211289 event pairs, 1272 based on Foata normal form. 291/18164 useless extension candidates. Maximal degree in co-relation 40991. Up to 6364 conditions per place. [2025-03-04 15:26:38,651 INFO L140 encePairwiseOnDemand]: 161/180 looper letters, 203 selfloop transitions, 31 changer transitions 0/334 dead transitions. [2025-03-04 15:26:38,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 334 transitions, 1421 flow [2025-03-04 15:26:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:26:38,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:26:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2025-03-04 15:26:38,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7988888888888889 [2025-03-04 15:26:38,654 INFO L175 Difference]: Start difference. First operand has 173 places, 195 transitions, 564 flow. Second operand 5 states and 719 transitions. [2025-03-04 15:26:38,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 334 transitions, 1421 flow [2025-03-04 15:26:38,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 334 transitions, 1421 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:26:38,676 INFO L231 Difference]: Finished difference. Result has 181 places, 217 transitions, 826 flow [2025-03-04 15:26:38,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=826, PETRI_PLACES=181, PETRI_TRANSITIONS=217} [2025-03-04 15:26:38,677 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 19 predicate places. [2025-03-04 15:26:38,677 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 217 transitions, 826 flow [2025-03-04 15:26:38,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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) [2025-03-04 15:26:38,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:38,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:38,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:26:38,678 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:26:38,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:38,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1042629824, now seen corresponding path program 1 times [2025-03-04 15:26:38,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:38,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982193312] [2025-03-04 15:26:38,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:38,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:38,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:26:38,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:26:38,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:38,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:38,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:38,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982193312] [2025-03-04 15:26:38,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982193312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:38,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:38,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:38,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116258995] [2025-03-04 15:26:38,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:38,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:38,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:38,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:38,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:38,789 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2025-03-04 15:26:38,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 217 transitions, 826 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2025-03-04 15:26:38,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:38,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2025-03-04 15:26:38,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:39,915 INFO L124 PetriNetUnfolderBase]: 6858/18027 cut-off events. [2025-03-04 15:26:39,915 INFO L125 PetriNetUnfolderBase]: For 11848/12295 co-relation queries the response was YES. [2025-03-04 15:26:39,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35496 conditions, 18027 events. 6858/18027 cut-off events. For 11848/12295 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 190258 event pairs, 4205 based on Foata normal form. 273/14971 useless extension candidates. Maximal degree in co-relation 35456. Up to 7489 conditions per place. [2025-03-04 15:26:40,021 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 122 selfloop transitions, 5 changer transitions 0/247 dead transitions. [2025-03-04 15:26:40,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 247 transitions, 1151 flow [2025-03-04 15:26:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 569 transitions. [2025-03-04 15:26:40,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7902777777777777 [2025-03-04 15:26:40,024 INFO L175 Difference]: Start difference. First operand has 181 places, 217 transitions, 826 flow. Second operand 4 states and 569 transitions. [2025-03-04 15:26:40,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 247 transitions, 1151 flow [2025-03-04 15:26:40,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 247 transitions, 1143 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-03-04 15:26:40,072 INFO L231 Difference]: Finished difference. Result has 186 places, 218 transitions, 849 flow [2025-03-04 15:26:40,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=849, PETRI_PLACES=186, PETRI_TRANSITIONS=218} [2025-03-04 15:26:40,074 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 24 predicate places. [2025-03-04 15:26:40,074 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 218 transitions, 849 flow [2025-03-04 15:26:40,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2025-03-04 15:26:40,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:40,075 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:40,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:26:40,075 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:26:40,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:40,076 INFO L85 PathProgramCache]: Analyzing trace with hash 158414676, now seen corresponding path program 1 times [2025-03-04 15:26:40,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:40,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221453708] [2025-03-04 15:26:40,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:40,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:40,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:26:40,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:26:40,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:40,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:40,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:40,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221453708] [2025-03-04 15:26:40,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221453708] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:40,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:40,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:40,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711620262] [2025-03-04 15:26:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:40,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:40,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:40,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:40,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:40,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 180 [2025-03-04 15:26:40,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 218 transitions, 849 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:40,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:40,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 180 [2025-03-04 15:26:40,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:42,107 INFO L124 PetriNetUnfolderBase]: 15194/32932 cut-off events. [2025-03-04 15:26:42,108 INFO L125 PetriNetUnfolderBase]: For 29613/30978 co-relation queries the response was YES. [2025-03-04 15:26:42,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72437 conditions, 32932 events. 15194/32932 cut-off events. For 29613/30978 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 339385 event pairs, 4101 based on Foata normal form. 1830/29571 useless extension candidates. Maximal degree in co-relation 72395. Up to 9920 conditions per place. [2025-03-04 15:26:42,264 INFO L140 encePairwiseOnDemand]: 148/180 looper letters, 222 selfloop transitions, 20 changer transitions 0/338 dead transitions. [2025-03-04 15:26:42,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 338 transitions, 2043 flow [2025-03-04 15:26:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 541 transitions. [2025-03-04 15:26:42,266 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7513888888888889 [2025-03-04 15:26:42,266 INFO L175 Difference]: Start difference. First operand has 186 places, 218 transitions, 849 flow. Second operand 4 states and 541 transitions. [2025-03-04 15:26:42,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 338 transitions, 2043 flow [2025-03-04 15:26:42,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 338 transitions, 2040 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:42,359 INFO L231 Difference]: Finished difference. Result has 187 places, 226 transitions, 982 flow [2025-03-04 15:26:42,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=982, PETRI_PLACES=187, PETRI_TRANSITIONS=226} [2025-03-04 15:26:42,359 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 25 predicate places. [2025-03-04 15:26:42,359 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 226 transitions, 982 flow [2025-03-04 15:26:42,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:26:42,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:42,360 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:42,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 15:26:42,360 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:26:42,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2037198128, now seen corresponding path program 1 times [2025-03-04 15:26:42,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:42,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256385047] [2025-03-04 15:26:42,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:42,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:42,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:26:42,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:26:42,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:42,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:42,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:42,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256385047] [2025-03-04 15:26:42,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256385047] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:42,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:42,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:42,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813612700] [2025-03-04 15:26:42,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:42,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:42,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:42,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:42,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:42,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-04 15:26:42,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 226 transitions, 982 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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) [2025-03-04 15:26:42,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:42,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-04 15:26:42,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:44,541 INFO L124 PetriNetUnfolderBase]: 12103/28384 cut-off events. [2025-03-04 15:26:44,541 INFO L125 PetriNetUnfolderBase]: For 29856/31162 co-relation queries the response was YES. [2025-03-04 15:26:44,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66970 conditions, 28384 events. 12103/28384 cut-off events. For 29856/31162 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 301193 event pairs, 2271 based on Foata normal form. 872/25422 useless extension candidates. Maximal degree in co-relation 66925. Up to 8600 conditions per place. [2025-03-04 15:26:44,752 INFO L140 encePairwiseOnDemand]: 164/180 looper letters, 226 selfloop transitions, 33 changer transitions 0/359 dead transitions. [2025-03-04 15:26:44,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 359 transitions, 2037 flow [2025-03-04 15:26:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:26:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:26:44,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2025-03-04 15:26:44,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7811111111111111 [2025-03-04 15:26:44,754 INFO L175 Difference]: Start difference. First operand has 187 places, 226 transitions, 982 flow. Second operand 5 states and 703 transitions. [2025-03-04 15:26:44,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 359 transitions, 2037 flow [2025-03-04 15:26:45,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 359 transitions, 2037 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:26:45,064 INFO L231 Difference]: Finished difference. Result has 191 places, 230 transitions, 1060 flow [2025-03-04 15:26:45,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1060, PETRI_PLACES=191, PETRI_TRANSITIONS=230} [2025-03-04 15:26:45,065 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 29 predicate places. [2025-03-04 15:26:45,065 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 230 transitions, 1060 flow [2025-03-04 15:26:45,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 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) [2025-03-04 15:26:45,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:45,065 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:45,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 15:26:45,067 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:26:45,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash 615888900, now seen corresponding path program 1 times [2025-03-04 15:26:45,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:45,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802397314] [2025-03-04 15:26:45,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:45,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:45,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:26:45,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:26:45,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:45,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:45,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:45,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:45,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802397314] [2025-03-04 15:26:45,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802397314] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:45,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:45,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:45,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823783848] [2025-03-04 15:26:45,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:45,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:45,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:45,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:45,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:45,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-04 15:26:45,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 230 transitions, 1060 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2025-03-04 15:26:45,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:45,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-04 15:26:45,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:49,081 INFO L124 PetriNetUnfolderBase]: 25291/59940 cut-off events. [2025-03-04 15:26:49,082 INFO L125 PetriNetUnfolderBase]: For 75412/77886 co-relation queries the response was YES. [2025-03-04 15:26:49,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142911 conditions, 59940 events. 25291/59940 cut-off events. For 75412/77886 co-relation queries the response was YES. Maximal size of possible extension queue 1565. Compared 687465 event pairs, 3922 based on Foata normal form. 2217/54496 useless extension candidates. Maximal degree in co-relation 142864. Up to 16606 conditions per place. [2025-03-04 15:26:49,511 INFO L140 encePairwiseOnDemand]: 161/180 looper letters, 307 selfloop transitions, 31 changer transitions 0/446 dead transitions. [2025-03-04 15:26:49,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 446 transitions, 3037 flow [2025-03-04 15:26:49,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:26:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:26:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 715 transitions. [2025-03-04 15:26:49,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7944444444444444 [2025-03-04 15:26:49,513 INFO L175 Difference]: Start difference. First operand has 191 places, 230 transitions, 1060 flow. Second operand 5 states and 715 transitions. [2025-03-04 15:26:49,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 446 transitions, 3037 flow [2025-03-04 15:26:49,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 446 transitions, 3037 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:26:49,719 INFO L231 Difference]: Finished difference. Result has 199 places, 252 transitions, 1322 flow [2025-03-04 15:26:49,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1322, PETRI_PLACES=199, PETRI_TRANSITIONS=252} [2025-03-04 15:26:49,720 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 37 predicate places. [2025-03-04 15:26:49,720 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 252 transitions, 1322 flow [2025-03-04 15:26:49,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2025-03-04 15:26:49,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:49,720 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:49,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 15:26:49,720 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:26:49,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:49,721 INFO L85 PathProgramCache]: Analyzing trace with hash 615920710, now seen corresponding path program 1 times [2025-03-04 15:26:49,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:49,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12546354] [2025-03-04 15:26:49,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:49,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:49,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:26:49,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:26:49,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:49,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:49,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:49,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12546354] [2025-03-04 15:26:49,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12546354] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:49,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:49,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:26:49,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375183832] [2025-03-04 15:26:49,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:49,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:49,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:49,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:49,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:26:49,795 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 180 [2025-03-04 15:26:49,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 252 transitions, 1322 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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) [2025-03-04 15:26:49,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:49,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 180 [2025-03-04 15:26:49,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:53,664 INFO L124 PetriNetUnfolderBase]: 20052/51945 cut-off events. [2025-03-04 15:26:53,665 INFO L125 PetriNetUnfolderBase]: For 81010/83277 co-relation queries the response was YES. [2025-03-04 15:26:53,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128384 conditions, 51945 events. 20052/51945 cut-off events. For 81010/83277 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 618785 event pairs, 12112 based on Foata normal form. 1317/46633 useless extension candidates. Maximal degree in co-relation 128331. Up to 21999 conditions per place. [2025-03-04 15:26:54,112 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 176 selfloop transitions, 5 changer transitions 0/309 dead transitions. [2025-03-04 15:26:54,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 309 transitions, 2052 flow [2025-03-04 15:26:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:26:54,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:26:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2025-03-04 15:26:54,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2025-03-04 15:26:54,114 INFO L175 Difference]: Start difference. First operand has 199 places, 252 transitions, 1322 flow. Second operand 4 states and 570 transitions. [2025-03-04 15:26:54,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 309 transitions, 2052 flow [2025-03-04 15:26:54,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 309 transitions, 2044 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-03-04 15:26:54,638 INFO L231 Difference]: Finished difference. Result has 204 places, 253 transitions, 1345 flow [2025-03-04 15:26:54,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1345, PETRI_PLACES=204, PETRI_TRANSITIONS=253} [2025-03-04 15:26:54,638 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 42 predicate places. [2025-03-04 15:26:54,638 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 253 transitions, 1345 flow [2025-03-04 15:26:54,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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) [2025-03-04 15:26:54,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:54,639 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:54,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-04 15:26:54,639 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:26:54,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:54,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1271367293, now seen corresponding path program 1 times [2025-03-04 15:26:54,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:54,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993397413] [2025-03-04 15:26:54,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:54,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:54,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:26:54,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:26:54,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:54,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:54,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:54,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993397413] [2025-03-04 15:26:54,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993397413] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:54,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:54,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:26:54,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618511102] [2025-03-04 15:26:54,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:54,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:26:54,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:54,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:26:54,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:26:54,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-04 15:26:54,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 253 transitions, 1345 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 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) [2025-03-04 15:26:54,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:54,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-04 15:26:54,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:03,637 INFO L124 PetriNetUnfolderBase]: 51774/110938 cut-off events. [2025-03-04 15:27:03,637 INFO L125 PetriNetUnfolderBase]: For 168878/176085 co-relation queries the response was YES. [2025-03-04 15:27:04,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289604 conditions, 110938 events. 51774/110938 cut-off events. For 168878/176085 co-relation queries the response was YES. Maximal size of possible extension queue 2723. Compared 1287873 event pairs, 12955 based on Foata normal form. 3741/107637 useless extension candidates. Maximal degree in co-relation 289549. Up to 29284 conditions per place. [2025-03-04 15:27:04,687 INFO L140 encePairwiseOnDemand]: 159/180 looper letters, 428 selfloop transitions, 44 changer transitions 0/584 dead transitions. [2025-03-04 15:27:04,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 584 transitions, 4258 flow [2025-03-04 15:27:04,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:27:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:27:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 988 transitions. [2025-03-04 15:27:04,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7841269841269841 [2025-03-04 15:27:04,689 INFO L175 Difference]: Start difference. First operand has 204 places, 253 transitions, 1345 flow. Second operand 7 states and 988 transitions. [2025-03-04 15:27:04,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 584 transitions, 4258 flow [2025-03-04 15:27:05,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 584 transitions, 4255 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:27:05,477 INFO L231 Difference]: Finished difference. Result has 213 places, 277 transitions, 1646 flow [2025-03-04 15:27:05,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1646, PETRI_PLACES=213, PETRI_TRANSITIONS=277} [2025-03-04 15:27:05,477 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 51 predicate places. [2025-03-04 15:27:05,477 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 277 transitions, 1646 flow [2025-03-04 15:27:05,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 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) [2025-03-04 15:27:05,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:05,478 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:05,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-04 15:27:05,478 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:27:05,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1912657212, now seen corresponding path program 1 times [2025-03-04 15:27:05,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:05,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116785642] [2025-03-04 15:27:05,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:05,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:05,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:27:05,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:27:05,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:05,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:05,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:05,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116785642] [2025-03-04 15:27:05,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116785642] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:05,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:05,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:27:05,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506468821] [2025-03-04 15:27:05,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:05,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:27:05,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:05,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:27:05,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:27:05,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 180 [2025-03-04 15:27:05,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 277 transitions, 1646 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2025-03-04 15:27:05,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:05,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 180 [2025-03-04 15:27:05,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:12,953 INFO L124 PetriNetUnfolderBase]: 37516/89754 cut-off events. [2025-03-04 15:27:12,953 INFO L125 PetriNetUnfolderBase]: For 191020/196422 co-relation queries the response was YES. [2025-03-04 15:27:13,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240258 conditions, 89754 events. 37516/89754 cut-off events. For 191020/196422 co-relation queries the response was YES. Maximal size of possible extension queue 2383. Compared 1098676 event pairs, 6723 based on Foata normal form. 3185/83326 useless extension candidates. Maximal degree in co-relation 240197. Up to 26636 conditions per place. [2025-03-04 15:27:13,707 INFO L140 encePairwiseOnDemand]: 164/180 looper letters, 344 selfloop transitions, 33 changer transitions 0/497 dead transitions. [2025-03-04 15:27:13,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 497 transitions, 4065 flow [2025-03-04 15:27:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:27:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:27:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2025-03-04 15:27:13,709 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7766666666666666 [2025-03-04 15:27:13,709 INFO L175 Difference]: Start difference. First operand has 213 places, 277 transitions, 1646 flow. Second operand 5 states and 699 transitions. [2025-03-04 15:27:13,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 497 transitions, 4065 flow [2025-03-04 15:27:14,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 497 transitions, 4065 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:27:14,793 INFO L231 Difference]: Finished difference. Result has 217 places, 281 transitions, 1724 flow [2025-03-04 15:27:14,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1724, PETRI_PLACES=217, PETRI_TRANSITIONS=281} [2025-03-04 15:27:14,794 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 55 predicate places. [2025-03-04 15:27:14,794 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 281 transitions, 1724 flow [2025-03-04 15:27:14,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2025-03-04 15:27:14,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:14,794 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:14,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 15:27:14,794 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err25ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2025-03-04 15:27:14,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:14,795 INFO L85 PathProgramCache]: Analyzing trace with hash 530009426, now seen corresponding path program 1 times [2025-03-04 15:27:14,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:14,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306712585] [2025-03-04 15:27:14,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:14,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:14,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:27:14,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:27:14,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:14,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat