./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:12:17,190 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:12:17,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:12:17,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:12:17,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:12:17,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:12:17,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:12:17,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:12:17,272 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:12:17,272 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:12:17,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:12:17,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:12:17,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:12:17,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:12:17,273 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:12:17,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:12:17,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:12:17,274 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:12:17,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:12:17,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:12:17,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:12:17,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:12:17,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:12:17,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:12:17,274 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:12:17,275 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:12:17,275 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:12:17,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:12:17,275 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:12:17,275 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:12:17,275 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:12:17,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:12:17,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:12:17,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:12:17,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:12:17,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:12:17,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:12:17,276 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:12:17,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:12:17,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:12:17,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:12:17,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:12:17,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:12:17,276 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:12:17,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:12:17,277 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe [2025-02-08 14:12:17,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:12:17,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:12:17,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:12:17,536 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:12:17,536 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:12:17,538 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2025-02-08 14:12:18,673 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8cd60a859/226c4a734cae434cb2d05133aeba9073/FLAG01bc45926 [2025-02-08 14:12:18,909 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:12:18,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2025-02-08 14:12:18,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8cd60a859/226c4a734cae434cb2d05133aeba9073/FLAG01bc45926 [2025-02-08 14:12:19,240 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8cd60a859/226c4a734cae434cb2d05133aeba9073 [2025-02-08 14:12:19,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:12:19,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:12:19,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:12:19,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:12:19,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:12:19,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab6b66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19, skipping insertion in model container [2025-02-08 14:12:19,252 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,268 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:12:19,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:12:19,426 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:12:19,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:12:19,458 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:12:19,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19 WrapperNode [2025-02-08 14:12:19,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:12:19,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:12:19,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:12:19,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:12:19,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,496 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 326 [2025-02-08 14:12:19,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:12:19,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:12:19,500 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:12:19,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:12:19,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,512 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,533 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-08 14:12:19,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,543 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,551 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:12:19,552 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:12:19,552 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:12:19,552 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:12:19,553 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:12:19,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:19,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:12:19,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:12:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:12:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:12:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:12:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:12:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:12:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:12:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:12:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:12:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:12:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:12:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:12:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 14:12:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 14:12:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:12:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:12:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:12:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:12:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:12:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:12:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:12:19,607 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:12:19,694 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:12:19,696 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:12:19,892 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97: havoc #t~post9#1; [2025-02-08 14:12:19,892 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97-1: assume 1 + #t~post9#1 <= 2147483647; [2025-02-08 14:12:19,892 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97-1: assume !(1 + #t~post9#1 <= 2147483647); [2025-02-08 14:12:19,892 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97-2: ~q1_front~0 := 1 + #t~post9#1; [2025-02-08 14:12:19,892 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97-3: assume 1 + #t~post9#1 >= -2147483648; [2025-02-08 14:12:19,892 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97-3: assume !(1 + #t~post9#1 >= -2147483648); [2025-02-08 14:12:19,892 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97-4: #t~post9#1 := ~q1_front~0; [2025-02-08 14:12:19,893 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L98: [2025-02-08 14:12:19,893 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99: ~cond~2#1 := (if 0 == (if ~i~0 < ~N~0 || ~q1_front~0 < ~q1_back~0 then 1 else 0) then 0 else 1); [2025-02-08 14:12:19,893 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96: havoc #t~ret8#1; [2025-02-08 14:12:19,893 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-1: havoc #t~mem7#1; [2025-02-08 14:12:19,893 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-2: ~total~0 := #t~ret8#1; [2025-02-08 14:12:19,893 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret8#1 && #t~ret8#1 <= 2147483647; [2025-02-08 14:12:19,893 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:19,893 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-5: havoc plus_#t~short32#1, plus_#t~short33#1, plus_~a#1, plus_~b#1; [2025-02-08 14:12:19,893 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-6: #t~ret8#1 := plus_#res#1; [2025-02-08 14:12:19,893 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L101: [2025-02-08 14:12:19,961 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114: havoc #t~ret11#1; [2025-02-08 14:12:19,961 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114-1: havoc #t~mem10#1; [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114-2: ~total~0 := #t~ret11#1; [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret11#1 && #t~ret11#1 <= 2147483647; [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114-5: havoc plus_#t~short32#1, plus_#t~short33#1, plus_~a#1, plus_~b#1; [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114-6: #t~ret11#1 := plus_#res#1; [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L119: [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115: havoc #t~post12#1; [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115-1: assume 1 + #t~post12#1 <= 2147483647; [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115-1: assume !(1 + #t~post12#1 <= 2147483647); [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115-2: ~q2_front~0 := 1 + #t~post12#1; [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115-3: assume 1 + #t~post12#1 >= -2147483648; [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115-3: assume !(1 + #t~post12#1 >= -2147483648); [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115-4: #t~post12#1 := ~q2_front~0; [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L116: [2025-02-08 14:12:19,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117: ~cond~3#1 := (if 0 == (if ~j~0 < ~N~0 || ~q2_front~0 < ~q2_back~0 then 1 else 0) then 0 else 1); [2025-02-08 14:12:20,091 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:12:20,091 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:12:20,421 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L171 is not an error location. [2025-02-08 14:12:20,422 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L171 is not an error location. [2025-02-08 14:12:20,423 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:12:20,424 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:12:20,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:12:20 BoogieIcfgContainer [2025-02-08 14:12:20,424 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:12:20,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:12:20,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:12:20,429 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:12:20,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:12:19" (1/3) ... [2025-02-08 14:12:20,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c944d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:12:20, skipping insertion in model container [2025-02-08 14:12:20,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19" (2/3) ... [2025-02-08 14:12:20,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c944d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:12:20, skipping insertion in model container [2025-02-08 14:12:20,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:12:20" (3/3) ... [2025-02-08 14:12:20,431 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2025-02-08 14:12:20,442 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:12:20,444 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult.wvr.c that has 5 procedures, 73 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-02-08 14:12:20,444 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:12:20,559 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 14:12:20,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 76 transitions, 180 flow [2025-02-08 14:12:20,625 INFO L124 PetriNetUnfolderBase]: 4/72 cut-off events. [2025-02-08 14:12:20,627 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:12:20,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 72 events. 4/72 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 226 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2025-02-08 14:12:20,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 76 transitions, 180 flow [2025-02-08 14:12:20,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 161 flow [2025-02-08 14:12:20,642 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:12:20,651 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;@53b19ebb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:12:20,652 INFO L334 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2025-02-08 14:12:20,654 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:12:20,654 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:12:20,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:12:20,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:20,655 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:12:20,655 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:12:20,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:20,659 INFO L85 PathProgramCache]: Analyzing trace with hash 891299, now seen corresponding path program 1 times [2025-02-08 14:12:20,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:20,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792261727] [2025-02-08 14:12:20,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:20,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:20,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:12:20,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:12:20,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:20,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:20,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:20,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792261727] [2025-02-08 14:12:20,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792261727] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:20,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:20,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:12:20,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341893218] [2025-02-08 14:12:20,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:20,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:12:20,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:20,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:12:20,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:12:20,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 76 [2025-02-08 14:12:20,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:20,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:20,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 76 [2025-02-08 14:12:20,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:24,943 INFO L124 PetriNetUnfolderBase]: 39180/52459 cut-off events. [2025-02-08 14:12:24,943 INFO L125 PetriNetUnfolderBase]: For 1174/1174 co-relation queries the response was YES. [2025-02-08 14:12:25,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106236 conditions, 52459 events. 39180/52459 cut-off events. For 1174/1174 co-relation queries the response was YES. Maximal size of possible extension queue 3138. Compared 350325 event pairs, 36482 based on Foata normal form. 2/29380 useless extension candidates. Maximal degree in co-relation 100294. Up to 51597 conditions per place. [2025-02-08 14:12:25,368 INFO L140 encePairwiseOnDemand]: 59/76 looper letters, 53 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2025-02-08 14:12:25,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 281 flow [2025-02-08 14:12:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:12:25,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:12:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2025-02-08 14:12:25,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2025-02-08 14:12:25,381 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 161 flow. Second operand 4 states and 126 transitions. [2025-02-08 14:12:25,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 281 flow [2025-02-08 14:12:25,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 268 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-08 14:12:25,762 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 196 flow [2025-02-08 14:12:25,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2025-02-08 14:12:25,767 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -7 predicate places. [2025-02-08 14:12:25,767 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 196 flow [2025-02-08 14:12:25,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:25,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:25,767 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:12:25,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:12:25,768 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:12:25,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash 783703957, now seen corresponding path program 1 times [2025-02-08 14:12:25,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:25,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902068604] [2025-02-08 14:12:25,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:25,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:25,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:25,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:25,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:25,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:25,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:25,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902068604] [2025-02-08 14:12:25,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902068604] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:25,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354634502] [2025-02-08 14:12:25,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:25,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:25,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:25,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:12:25,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:12:25,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:25,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:25,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:25,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:25,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:12:25,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:26,023 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:12:26,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354634502] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:26,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:12:26,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:12:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038710861] [2025-02-08 14:12:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:26,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:12:26,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:26,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:12:26,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:12:26,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 76 [2025-02-08 14:12:26,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:26,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:26,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 76 [2025-02-08 14:12:26,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:29,513 INFO L124 PetriNetUnfolderBase]: 39180/52457 cut-off events. [2025-02-08 14:12:29,513 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2025-02-08 14:12:29,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105452 conditions, 52457 events. 39180/52457 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 3138. Compared 350402 event pairs, 36482 based on Foata normal form. 2/29381 useless extension candidates. Maximal degree in co-relation 105402. Up to 51587 conditions per place. [2025-02-08 14:12:29,785 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 46 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2025-02-08 14:12:29,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 68 transitions, 304 flow [2025-02-08 14:12:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:12:29,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:12:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2025-02-08 14:12:29,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3157894736842105 [2025-02-08 14:12:29,790 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 196 flow. Second operand 6 states and 144 transitions. [2025-02-08 14:12:29,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 68 transitions, 304 flow [2025-02-08 14:12:29,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:12:29,792 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 212 flow [2025-02-08 14:12:29,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2025-02-08 14:12:29,792 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -4 predicate places. [2025-02-08 14:12:29,793 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 212 flow [2025-02-08 14:12:29,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:29,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:29,793 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:12:29,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:12:29,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:29,998 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:12:29,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1474980286, now seen corresponding path program 1 times [2025-02-08 14:12:29,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:29,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045500352] [2025-02-08 14:12:29,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:29,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:30,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:12:30,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:12:30,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:30,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:30,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:30,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045500352] [2025-02-08 14:12:30,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045500352] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:30,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070230932] [2025-02-08 14:12:30,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:30,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:30,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:30,107 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:12:30,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:12:30,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:12:30,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:12:30,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:30,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:30,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:12:30,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:30,210 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:30,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070230932] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:30,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:30,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:12:30,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124591688] [2025-02-08 14:12:30,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:30,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:12:30,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:30,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:12:30,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:12:30,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 76 [2025-02-08 14:12:30,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 212 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:30,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:30,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 76 [2025-02-08 14:12:30,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:33,438 INFO L124 PetriNetUnfolderBase]: 39186/52481 cut-off events. [2025-02-08 14:12:33,438 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2025-02-08 14:12:33,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105546 conditions, 52481 events. 39186/52481 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 3138. Compared 350639 event pairs, 36482 based on Foata normal form. 6/29408 useless extension candidates. Maximal degree in co-relation 105404. Up to 51598 conditions per place. [2025-02-08 14:12:33,720 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 51 selfloop transitions, 25 changer transitions 0/86 dead transitions. [2025-02-08 14:12:33,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 86 transitions, 478 flow [2025-02-08 14:12:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:12:33,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:12:33,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2025-02-08 14:12:33,722 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29210526315789476 [2025-02-08 14:12:33,722 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 212 flow. Second operand 10 states and 222 transitions. [2025-02-08 14:12:33,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 86 transitions, 478 flow [2025-02-08 14:12:33,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 420 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-08 14:12:33,725 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 352 flow [2025-02-08 14:12:33,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=352, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2025-02-08 14:12:33,725 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2025-02-08 14:12:33,725 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 352 flow [2025-02-08 14:12:33,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:33,726 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:33,726 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:33,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 14:12:33,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:33,929 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:12:33,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:33,930 INFO L85 PathProgramCache]: Analyzing trace with hash -982251123, now seen corresponding path program 1 times [2025-02-08 14:12:33,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:33,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011767689] [2025-02-08 14:12:33,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:33,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:33,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:12:33,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:12:33,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:33,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:34,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:34,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011767689] [2025-02-08 14:12:34,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011767689] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:34,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:34,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:12:34,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618336418] [2025-02-08 14:12:34,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:34,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:12:34,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:34,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:12:34,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:12:34,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2025-02-08 14:12:34,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:34,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:34,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2025-02-08 14:12:34,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:38,444 INFO L124 PetriNetUnfolderBase]: 44269/59665 cut-off events. [2025-02-08 14:12:38,445 INFO L125 PetriNetUnfolderBase]: For 222/222 co-relation queries the response was YES. [2025-02-08 14:12:38,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120044 conditions, 59665 events. 44269/59665 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 3376. Compared 402702 event pairs, 41369 based on Foata normal form. 1159/36744 useless extension candidates. Maximal degree in co-relation 119948. Up to 51613 conditions per place. [2025-02-08 14:12:38,738 INFO L140 encePairwiseOnDemand]: 66/76 looper letters, 118 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2025-02-08 14:12:38,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 133 transitions, 769 flow [2025-02-08 14:12:38,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:12:38,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:12:38,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2025-02-08 14:12:38,740 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5493421052631579 [2025-02-08 14:12:38,740 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 352 flow. Second operand 4 states and 167 transitions. [2025-02-08 14:12:38,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 133 transitions, 769 flow [2025-02-08 14:12:38,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 735 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-08 14:12:38,742 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 349 flow [2025-02-08 14:12:38,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2025-02-08 14:12:38,743 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2025-02-08 14:12:38,743 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 349 flow [2025-02-08 14:12:38,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:38,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:38,743 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:38,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:12:38,744 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:12:38,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:38,744 INFO L85 PathProgramCache]: Analyzing trace with hash -838157250, now seen corresponding path program 1 times [2025-02-08 14:12:38,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:38,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000372722] [2025-02-08 14:12:38,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:38,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:38,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:12:38,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:12:38,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:38,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:38,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:38,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000372722] [2025-02-08 14:12:38,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000372722] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:38,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:38,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:12:38,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573938017] [2025-02-08 14:12:38,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:38,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:12:38,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:38,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:12:38,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:12:38,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2025-02-08 14:12:38,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:38,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:38,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2025-02-08 14:12:38,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:42,650 INFO L124 PetriNetUnfolderBase]: 39862/53442 cut-off events. [2025-02-08 14:12:42,650 INFO L125 PetriNetUnfolderBase]: For 2842/2842 co-relation queries the response was YES. [2025-02-08 14:12:42,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117333 conditions, 53442 events. 39862/53442 cut-off events. For 2842/2842 co-relation queries the response was YES. Maximal size of possible extension queue 2889. Compared 353192 event pairs, 37108 based on Foata normal form. 0/31809 useless extension candidates. Maximal degree in co-relation 117239. Up to 52800 conditions per place. [2025-02-08 14:12:42,975 INFO L140 encePairwiseOnDemand]: 74/76 looper letters, 68 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2025-02-08 14:12:42,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 493 flow [2025-02-08 14:12:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:12:42,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:12:42,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-02-08 14:12:42,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2025-02-08 14:12:42,977 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 349 flow. Second operand 3 states and 104 transitions. [2025-02-08 14:12:42,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 493 flow [2025-02-08 14:12:42,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 489 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 14:12:42,982 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 353 flow [2025-02-08 14:12:42,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=353, PETRI_PLACES=84, PETRI_TRANSITIONS=85} [2025-02-08 14:12:42,983 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2025-02-08 14:12:42,983 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 353 flow [2025-02-08 14:12:42,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:42,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:42,983 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:42,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:12:42,984 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:12:42,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:42,984 INFO L85 PathProgramCache]: Analyzing trace with hash -838157248, now seen corresponding path program 1 times [2025-02-08 14:12:42,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:42,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597375882] [2025-02-08 14:12:42,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:42,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:42,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:12:42,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:12:42,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:42,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:43,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:43,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597375882] [2025-02-08 14:12:43,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597375882] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:43,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:43,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:12:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104028807] [2025-02-08 14:12:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:43,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:12:43,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:43,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:12:43,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:12:43,073 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2025-02-08 14:12:43,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:12:43,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:43,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2025-02-08 14:12:43,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand