./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.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-mult3.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 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:12:20,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:12:20,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:12:20,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:12:20,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:12:20,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:12:20,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:12:20,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:12:20,458 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:12:20,458 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:12:20,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:12:20,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:12:20,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:12:20,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:12:20,458 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:12:20,458 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:12:20,458 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:12:20,458 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:12:20,459 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:12:20,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:12:20,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:12:20,460 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:12:20,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:12:20,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:12:20,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:12:20,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:12:20,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:12:20,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:12:20,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:12:20,460 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 -> 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b [2025-02-08 14:12:20,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:12:20,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:12:20,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:12:20,628 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:12:20,629 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:12:20,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2025-02-08 14:12:21,755 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f81206b27/a25830d149ef4a9cb269feb6fd3185d5/FLAGe50bd9c9b [2025-02-08 14:12:21,975 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:12:21,976 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2025-02-08 14:12:22,000 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f81206b27/a25830d149ef4a9cb269feb6fd3185d5/FLAGe50bd9c9b [2025-02-08 14:12:22,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f81206b27/a25830d149ef4a9cb269feb6fd3185d5 [2025-02-08 14:12:22,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:12:22,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:12:22,351 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:12:22,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:12:22,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:12:22,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a292954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22, skipping insertion in model container [2025-02-08 14:12:22,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,378 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:12:22,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:12:22,525 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:12:22,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:12:22,573 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:12:22,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22 WrapperNode [2025-02-08 14:12:22,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:12:22,574 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:12:22,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:12:22,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:12:22,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,602 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 326 [2025-02-08 14:12:22,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:12:22,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:12:22,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:12:22,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:12:22,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,612 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,621 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 14:12:22,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,627 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,628 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:12:22,632 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:12:22,632 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:12:22,632 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:12:22,633 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (1/1) ... [2025-02-08 14:12:22,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:12:22,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:22,667 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 14:12:22,669 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 14:12:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:12:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:12:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:12:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:12:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:12:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:12:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:12:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:12:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:12:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:12:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:12:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 14:12:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 14:12:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:12:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:12:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:12:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:12:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:12:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:12:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:12:22,687 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 14:12:22,757 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:12:22,759 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:12:22,941 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97: havoc #t~post9#1; [2025-02-08 14:12:22,941 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97-1: assume 1 + #t~post9#1 <= 2147483647; [2025-02-08 14:12:22,941 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97-1: assume !(1 + #t~post9#1 <= 2147483647); [2025-02-08 14:12:22,941 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97-2: ~q1_front~0 := 1 + #t~post9#1; [2025-02-08 14:12:22,941 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97-3: assume 1 + #t~post9#1 >= -2147483648; [2025-02-08 14:12:22,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97-3: assume !(1 + #t~post9#1 >= -2147483648); [2025-02-08 14:12:22,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97-4: #t~post9#1 := ~q1_front~0; [2025-02-08 14:12:22,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L98: [2025-02-08 14:12:22,942 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 14:12:22,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96: havoc #t~ret8#1; [2025-02-08 14:12:22,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-1: havoc #t~mem7#1; [2025-02-08 14:12:22,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-2: ~total~0 := #t~ret8#1; [2025-02-08 14:12:22,942 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 14:12:22,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:22,942 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 14:12:22,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-6: #t~ret8#1 := plus_#res#1; [2025-02-08 14:12:22,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L101: [2025-02-08 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114: havoc #t~ret11#1; [2025-02-08 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114-1: havoc #t~mem10#1; [2025-02-08 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114-2: ~total~0 := #t~ret11#1; [2025-02-08 14:12:23,009 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 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:23,009 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 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114-6: #t~ret11#1 := plus_#res#1; [2025-02-08 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L119: [2025-02-08 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115: havoc #t~post12#1; [2025-02-08 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115-1: assume 1 + #t~post12#1 <= 2147483647; [2025-02-08 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115-1: assume !(1 + #t~post12#1 <= 2147483647); [2025-02-08 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115-2: ~q2_front~0 := 1 + #t~post12#1; [2025-02-08 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115-3: assume 1 + #t~post12#1 >= -2147483648; [2025-02-08 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115-3: assume !(1 + #t~post12#1 >= -2147483648); [2025-02-08 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115-4: #t~post12#1 := ~q2_front~0; [2025-02-08 14:12:23,009 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L116: [2025-02-08 14:12:23,009 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 14:12:23,129 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:12:23,129 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:12:23,387 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L171 is not an error location. [2025-02-08 14:12:23,387 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L171 is not an error location. [2025-02-08 14:12:23,388 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:12:23,388 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:12:23,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:12:23 BoogieIcfgContainer [2025-02-08 14:12:23,388 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:12:23,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:12:23,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:12:23,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:12:23,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:12:22" (1/3) ... [2025-02-08 14:12:23,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df54745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:12:23, skipping insertion in model container [2025-02-08 14:12:23,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:22" (2/3) ... [2025-02-08 14:12:23,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df54745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:12:23, skipping insertion in model container [2025-02-08 14:12:23,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:12:23" (3/3) ... [2025-02-08 14:12:23,394 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2025-02-08 14:12:23,404 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:12:23,405 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult3.wvr.c that has 5 procedures, 73 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-02-08 14:12:23,405 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:12:23,476 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 14:12:23,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 76 transitions, 180 flow [2025-02-08 14:12:23,517 INFO L124 PetriNetUnfolderBase]: 4/72 cut-off events. [2025-02-08 14:12:23,518 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:12:23,520 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 14:12:23,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 76 transitions, 180 flow [2025-02-08 14:12:23,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 161 flow [2025-02-08 14:12:23,527 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:12:23,533 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;@24f82557, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:12:23,533 INFO L334 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2025-02-08 14:12:23,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:12:23,535 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:12:23,535 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:12:23,535 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:23,535 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:12:23,535 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 14:12:23,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:23,538 INFO L85 PathProgramCache]: Analyzing trace with hash 891299, now seen corresponding path program 1 times [2025-02-08 14:12:23,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:23,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62823847] [2025-02-08 14:12:23,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:23,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:23,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:12:23,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:12:23,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:23,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:23,709 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 14:12:23,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:23,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62823847] [2025-02-08 14:12:23,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62823847] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:23,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:23,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:12:23,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761683160] [2025-02-08 14:12:23,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:23,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:12:23,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:23,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:12:23,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:12:23,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 76 [2025-02-08 14:12:23,746 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 14:12:23,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:23,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 76 [2025-02-08 14:12:23,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:28,649 INFO L124 PetriNetUnfolderBase]: 48212/64581 cut-off events. [2025-02-08 14:12:28,650 INFO L125 PetriNetUnfolderBase]: For 1301/1301 co-relation queries the response was YES. [2025-02-08 14:12:28,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130638 conditions, 64581 events. 48212/64581 cut-off events. For 1301/1301 co-relation queries the response was YES. Maximal size of possible extension queue 4040. Compared 442070 event pairs, 45222 based on Foata normal form. 2/34490 useless extension candidates. Maximal degree in co-relation 124152. Up to 63469 conditions per place. [2025-02-08 14:12:29,105 INFO L140 encePairwiseOnDemand]: 61/76 looper letters, 55 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2025-02-08 14:12:29,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 72 transitions, 289 flow [2025-02-08 14:12:29,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:12:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:12:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2025-02-08 14:12:29,115 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2025-02-08 14:12:29,116 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 161 flow. Second operand 4 states and 126 transitions. [2025-02-08 14:12:29,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 72 transitions, 289 flow [2025-02-08 14:12:29,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 72 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-08 14:12:29,218 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 200 flow [2025-02-08 14:12:29,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2025-02-08 14:12:29,224 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -5 predicate places. [2025-02-08 14:12:29,224 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 200 flow [2025-02-08 14:12:29,224 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 14:12:29,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:29,225 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:12:29,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:12:29,226 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 14:12:29,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:29,227 INFO L85 PathProgramCache]: Analyzing trace with hash 783703957, now seen corresponding path program 1 times [2025-02-08 14:12:29,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:29,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692563806] [2025-02-08 14:12:29,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:29,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:29,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:29,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:29,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:29,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:29,355 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 14:12:29,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:29,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692563806] [2025-02-08 14:12:29,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692563806] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:29,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345297052] [2025-02-08 14:12:29,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:29,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:29,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:29,362 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 14:12:29,363 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 14:12:29,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:29,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:29,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:29,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:29,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:12:29,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:29,464 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 14:12:29,465 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:12:29,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345297052] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:29,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:12:29,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:12:29,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150047741] [2025-02-08 14:12:29,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:29,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:12:29,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:29,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:12:29,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:12:29,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 76 [2025-02-08 14:12:29,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 200 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 14:12:29,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:29,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 76 [2025-02-08 14:12:29,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:33,394 INFO L124 PetriNetUnfolderBase]: 48212/64579 cut-off events. [2025-02-08 14:12:33,394 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2025-02-08 14:12:33,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129770 conditions, 64579 events. 48212/64579 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 4040. Compared 441982 event pairs, 45222 based on Foata normal form. 2/34491 useless extension candidates. Maximal degree in co-relation 129720. Up to 63459 conditions per place. [2025-02-08 14:12:33,727 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 48 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2025-02-08 14:12:33,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 312 flow [2025-02-08 14:12:33,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:12:33,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:12:33,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2025-02-08 14:12:33,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3201754385964912 [2025-02-08 14:12:33,728 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 200 flow. Second operand 6 states and 146 transitions. [2025-02-08 14:12:33,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 312 flow [2025-02-08 14:12:33,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 70 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:12:33,730 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 216 flow [2025-02-08 14:12:33,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2025-02-08 14:12:33,730 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2025-02-08 14:12:33,731 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 216 flow [2025-02-08 14:12:33,731 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 14:12:33,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:33,732 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:12:33,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:12:33,936 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 14:12:33,936 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 14:12:33,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:33,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1474980286, now seen corresponding path program 1 times [2025-02-08 14:12:33,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:33,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246648956] [2025-02-08 14:12:33,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:33,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:33,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:12:33,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:12:33,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:33,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:34,025 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 14:12:34,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:34,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246648956] [2025-02-08 14:12:34,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246648956] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:34,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273519602] [2025-02-08 14:12:34,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:34,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:34,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:34,027 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 14:12:34,029 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 14:12:34,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:12:34,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:12:34,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:34,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:34,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:12:34,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:34,127 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 14:12:34,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:34,161 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 14:12:34,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273519602] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:34,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:34,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:12:34,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416631200] [2025-02-08 14:12:34,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:34,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:12:34,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:34,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:12:34,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:12:34,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 76 [2025-02-08 14:12:34,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 216 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 14:12:34,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:34,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 76 [2025-02-08 14:12:34,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:38,575 INFO L124 PetriNetUnfolderBase]: 48218/64603 cut-off events. [2025-02-08 14:12:38,575 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2025-02-08 14:12:38,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129864 conditions, 64603 events. 48218/64603 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 4040. Compared 442541 event pairs, 45222 based on Foata normal form. 6/34518 useless extension candidates. Maximal degree in co-relation 129722. Up to 63470 conditions per place. [2025-02-08 14:12:38,888 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 53 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2025-02-08 14:12:38,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 486 flow [2025-02-08 14:12:38,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:12:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:12:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2025-02-08 14:12:38,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29473684210526313 [2025-02-08 14:12:38,890 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 216 flow. Second operand 10 states and 224 transitions. [2025-02-08 14:12:38,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 486 flow [2025-02-08 14:12:38,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-08 14:12:38,893 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 356 flow [2025-02-08 14:12:38,893 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2025-02-08 14:12:38,894 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2025-02-08 14:12:38,894 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 356 flow [2025-02-08 14:12:38,894 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 14:12:38,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:38,894 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:38,900 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 14:12:39,099 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 14:12:39,099 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:12:39,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:39,100 INFO L85 PathProgramCache]: Analyzing trace with hash -982251124, now seen corresponding path program 1 times [2025-02-08 14:12:39,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:39,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006121309] [2025-02-08 14:12:39,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:39,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:39,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:12:39,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:12:39,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:39,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:39,195 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 14:12:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006121309] [2025-02-08 14:12:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006121309] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:39,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:39,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:12:39,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830137228] [2025-02-08 14:12:39,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:39,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:12:39,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:39,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:12:39,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:12:39,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2025-02-08 14:12:39,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 14:12:39,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:39,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2025-02-08 14:12:39,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:44,418 INFO L124 PetriNetUnfolderBase]: 60529/81794 cut-off events. [2025-02-08 14:12:44,418 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2025-02-08 14:12:44,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163745 conditions, 81794 events. 60529/81794 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 4611. Compared 583601 event pairs, 15330 based on Foata normal form. 0/46573 useless extension candidates. Maximal degree in co-relation 163678. Up to 58328 conditions per place. [2025-02-08 14:12:44,798 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 111 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2025-02-08 14:12:44,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 125 transitions, 663 flow [2025-02-08 14:12:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:12:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:12:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2025-02-08 14:12:44,800 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6359649122807017 [2025-02-08 14:12:44,800 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 356 flow. Second operand 3 states and 145 transitions. [2025-02-08 14:12:44,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 125 transitions, 663 flow [2025-02-08 14:12:44,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 125 transitions, 639 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-08 14:12:44,802 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 346 flow [2025-02-08 14:12:44,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2025-02-08 14:12:44,803 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 6 predicate places. [2025-02-08 14:12:44,803 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 346 flow [2025-02-08 14:12:44,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 14:12:44,803 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:44,803 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:44,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:12:44,804 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:12:44,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:44,804 INFO L85 PathProgramCache]: Analyzing trace with hash -385012821, now seen corresponding path program 1 times [2025-02-08 14:12:44,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:44,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897981410] [2025-02-08 14:12:44,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:44,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:44,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:12:44,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:12:44,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:44,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:44,841 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 14:12:44,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:44,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897981410] [2025-02-08 14:12:44,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897981410] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:44,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:44,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:12:44,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752946461] [2025-02-08 14:12:44,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:44,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:12:44,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:44,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:12:44,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:12:44,843 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2025-02-08 14:12:44,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 14:12:44,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:44,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2025-02-08 14:12:44,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand