./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.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-mult2.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 dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:12:17,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:12:17,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:12:17,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:12:17,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:12:17,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:12:17,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:12:17,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:12:17,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:12:17,686 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:12:17,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:12:17,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:12:17,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:12:17,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:12:17,686 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:12:17,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:12:17,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:12:17,686 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:12:17,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:12:17,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:12:17,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:12:17,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:12:17,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:12:17,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:12:17,687 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:12:17,687 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:12:17,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:12:17,688 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 -> dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 [2025-02-08 14:12:17,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:12:17,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:12:17,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:12:17,928 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:12:17,928 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:12:17,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2025-02-08 14:12:19,062 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/af9b2f733/a25dc071fae1404c9da8ca7f85101cd0/FLAG3bbf2c65b [2025-02-08 14:12:19,347 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:12:19,347 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2025-02-08 14:12:19,363 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/af9b2f733/a25dc071fae1404c9da8ca7f85101cd0/FLAG3bbf2c65b [2025-02-08 14:12:19,648 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/af9b2f733/a25dc071fae1404c9da8ca7f85101cd0 [2025-02-08 14:12:19,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:12:19,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:12:19,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:12:19,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:12:19,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:12:19,660 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@537c6340 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 14:12:19,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:12:19" (1/1) ... [2025-02-08 14:12:19,674 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:12:19,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:12:19,810 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:12:19,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:12:19,850 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:12:19,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:19 WrapperNode [2025-02-08 14:12:19,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:12:19,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:12:19,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:12:19,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:12:19,856 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 14:12:19,861 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 14:12:19,877 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 322 [2025-02-08 14:12:19,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:12:19,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:12:19,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:12:19,878 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:12:19,884 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 14:12:19,884 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 14:12:19,886 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 14:12:19,895 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 14:12:19,896 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 14:12:19,896 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 14:12:19,901 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 14:12:19,902 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 14:12:19,903 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 14:12:19,904 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 14:12:19,906 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:12:19,906 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:12:19,906 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:12:19,906 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:12:19,907 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 14:12:19,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:12:19,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:19,934 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 14:12:19,937 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 14:12:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:12:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:12:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:12:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:12:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:12:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:12:19,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:12:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:12:19,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:12:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:12:19,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:12:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 14:12:19,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 14:12:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:12:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:12:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:12:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:12:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:12:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:12:19,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:12:19,958 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 14:12:20,082 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:12:20,084 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:12:20,301 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97: [2025-02-08 14:12:20,302 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L93: havoc #t~post9#1; [2025-02-08 14:12:20,303 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L93-1: assume 1 + #t~post9#1 <= 2147483647; [2025-02-08 14:12:20,303 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L93-1: assume !(1 + #t~post9#1 <= 2147483647); [2025-02-08 14:12:20,303 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L93-2: ~q1_front~0 := 1 + #t~post9#1; [2025-02-08 14:12:20,303 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L93-3: assume 1 + #t~post9#1 >= -2147483648; [2025-02-08 14:12:20,303 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L93-3: assume !(1 + #t~post9#1 >= -2147483648); [2025-02-08 14:12:20,303 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L93-4: #t~post9#1 := ~q1_front~0; [2025-02-08 14:12:20,303 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94: [2025-02-08 14:12:20,303 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95: ~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 14:12:20,303 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92: havoc #t~ret8#1; [2025-02-08 14:12:20,304 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-1: havoc #t~mem7#1; [2025-02-08 14:12:20,304 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-2: ~total~0 := #t~ret8#1; [2025-02-08 14:12:20,304 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret8#1 && #t~ret8#1 <= 2147483647; [2025-02-08 14:12:20,304 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:20,304 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-5: havoc plus_#t~short32#1, plus_#t~short33#1, plus_~a#1, plus_~b#1; [2025-02-08 14:12:20,304 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-6: #t~ret8#1 := plus_#res#1; [2025-02-08 14:12:20,357 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L110: havoc #t~ret11#1; [2025-02-08 14:12:20,357 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L110-1: havoc #t~mem10#1; [2025-02-08 14:12:20,357 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L110-2: ~total~0 := #t~ret11#1; [2025-02-08 14:12:20,357 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L110-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret11#1 && #t~ret11#1 <= 2147483647; [2025-02-08 14:12:20,357 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L110-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:20,357 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L110-5: havoc plus_#t~short32#1, plus_#t~short33#1, plus_~a#1, plus_~b#1; [2025-02-08 14:12:20,357 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L110-6: #t~ret11#1 := plus_#res#1; [2025-02-08 14:12:20,357 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115: [2025-02-08 14:12:20,357 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L111: havoc #t~post12#1; [2025-02-08 14:12:20,358 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L111-1: assume 1 + #t~post12#1 <= 2147483647; [2025-02-08 14:12:20,358 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L111-1: assume !(1 + #t~post12#1 <= 2147483647); [2025-02-08 14:12:20,358 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L111-2: ~q2_front~0 := 1 + #t~post12#1; [2025-02-08 14:12:20,358 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L111-3: assume 1 + #t~post12#1 >= -2147483648; [2025-02-08 14:12:20,358 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L111-3: assume !(1 + #t~post12#1 >= -2147483648); [2025-02-08 14:12:20,358 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L111-4: #t~post12#1 := ~q2_front~0; [2025-02-08 14:12:20,358 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112: [2025-02-08 14:12:20,358 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113: ~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 14:12:20,493 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:12:20,493 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:12:20,852 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L167 is not an error location. [2025-02-08 14:12:20,853 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L167 is not an error location. [2025-02-08 14:12:20,855 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:12:20,855 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:12:20,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:12:20 BoogieIcfgContainer [2025-02-08 14:12:20,856 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:12:20,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:12:20,858 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:12:20,862 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:12:20,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:12:19" (1/3) ... [2025-02-08 14:12:20,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd60737 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 14:12:20,863 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 14:12:20,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd60737 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 14:12:20,863 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 14:12:20,864 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2025-02-08 14:12:20,874 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:12:20,875 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult2.wvr.c that has 5 procedures, 71 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-02-08 14:12:20,875 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:12:20,975 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 14:12:20,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 74 transitions, 176 flow [2025-02-08 14:12:21,018 INFO L124 PetriNetUnfolderBase]: 4/70 cut-off events. [2025-02-08 14:12:21,020 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:12:21,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 70 events. 4/70 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 207 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2025-02-08 14:12:21,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 74 transitions, 176 flow [2025-02-08 14:12:21,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 157 flow [2025-02-08 14:12:21,029 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:12:21,036 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;@6d70325c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:12:21,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2025-02-08 14:12:21,038 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:12:21,039 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:12:21,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:12:21,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:21,039 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:12:21,039 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 14:12:21,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:21,043 INFO L85 PathProgramCache]: Analyzing trace with hash 883602, now seen corresponding path program 1 times [2025-02-08 14:12:21,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:21,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534086573] [2025-02-08 14:12:21,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:21,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:21,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:12:21,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:12:21,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:21,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:21,192 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 14:12:21,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534086573] [2025-02-08 14:12:21,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534086573] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:21,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:21,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:12:21,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124167003] [2025-02-08 14:12:21,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:21,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:12:21,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:21,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:12:21,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:12:21,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 74 [2025-02-08 14:12:21,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 157 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 14:12:21,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:21,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 74 [2025-02-08 14:12:21,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:25,229 INFO L124 PetriNetUnfolderBase]: 31080/41965 cut-off events. [2025-02-08 14:12:25,230 INFO L125 PetriNetUnfolderBase]: For 997/997 co-relation queries the response was YES. [2025-02-08 14:12:25,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84722 conditions, 41965 events. 31080/41965 cut-off events. For 997/997 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 283902 event pairs, 28674 based on Foata normal form. 2/22732 useless extension candidates. Maximal degree in co-relation 79324. Up to 40949 conditions per place. [2025-02-08 14:12:25,434 INFO L140 encePairwiseOnDemand]: 57/74 looper letters, 51 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2025-02-08 14:12:25,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 273 flow [2025-02-08 14:12:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:12:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:12:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-02-08 14:12:25,443 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2025-02-08 14:12:25,445 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 157 flow. Second operand 4 states and 124 transitions. [2025-02-08 14:12:25,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 273 flow [2025-02-08 14:12:25,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 260 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-08 14:12:25,797 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 192 flow [2025-02-08 14:12:25,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2025-02-08 14:12:25,800 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -7 predicate places. [2025-02-08 14:12:25,800 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 192 flow [2025-02-08 14:12:25,801 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 14:12:25,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:25,801 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:12:25,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:12:25,801 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 14:12:25,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:25,802 INFO L85 PathProgramCache]: Analyzing trace with hash 554362259, now seen corresponding path program 1 times [2025-02-08 14:12:25,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:25,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537790492] [2025-02-08 14:12:25,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:25,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:25,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:25,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:25,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:25,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:25,939 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 14:12:25,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537790492] [2025-02-08 14:12:25,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537790492] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675680592] [2025-02-08 14:12:25,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:25,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:25,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:25,943 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 14:12:25,944 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 14:12:26,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:26,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:26,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:26,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:26,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:12:26,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:26,044 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 14:12:26,044 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:12:26,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675680592] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:26,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:12:26,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:12:26,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827494936] [2025-02-08 14:12:26,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:26,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:12:26,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:26,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:12:26,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:12:26,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 74 [2025-02-08 14:12:26,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 192 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 14:12:26,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:26,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 74 [2025-02-08 14:12:26,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:29,238 INFO L124 PetriNetUnfolderBase]: 31080/41963 cut-off events. [2025-02-08 14:12:29,238 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-02-08 14:12:29,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84020 conditions, 41963 events. 31080/41963 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 283944 event pairs, 28674 based on Foata normal form. 2/22733 useless extension candidates. Maximal degree in co-relation 83970. Up to 40939 conditions per place. [2025-02-08 14:12:29,456 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 44 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2025-02-08 14:12:29,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 296 flow [2025-02-08 14:12:29,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:12:29,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:12:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2025-02-08 14:12:29,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31981981981981983 [2025-02-08 14:12:29,462 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 192 flow. Second operand 6 states and 142 transitions. [2025-02-08 14:12:29,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 296 flow [2025-02-08 14:12:29,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:12:29,464 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 208 flow [2025-02-08 14:12:29,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2025-02-08 14:12:29,465 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -4 predicate places. [2025-02-08 14:12:29,465 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 208 flow [2025-02-08 14:12:29,466 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 14:12:29,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:29,466 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:12:29,472 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 14:12:29,670 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 14:12:29,670 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 14:12:29,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash 5361626, now seen corresponding path program 1 times [2025-02-08 14:12:29,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:29,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210374209] [2025-02-08 14:12:29,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:29,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:29,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:12:29,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:12:29,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:29,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:29,764 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 14:12:29,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:29,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210374209] [2025-02-08 14:12:29,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210374209] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:29,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659979398] [2025-02-08 14:12:29,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:29,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:29,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:29,767 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 14:12:29,768 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 14:12:29,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:12:29,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:12:29,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:29,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:29,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:12:29,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:29,853 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 14:12:29,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:29,884 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 14:12:29,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659979398] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:29,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:29,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:12:29,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119625257] [2025-02-08 14:12:29,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:29,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:12:29,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:29,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:12:29,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:12:29,908 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 74 [2025-02-08 14:12:29,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 208 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 14:12:29,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:29,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 74 [2025-02-08 14:12:29,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:32,690 INFO L124 PetriNetUnfolderBase]: 31086/41987 cut-off events. [2025-02-08 14:12:32,690 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2025-02-08 14:12:32,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84114 conditions, 41987 events. 31086/41987 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 284083 event pairs, 28674 based on Foata normal form. 6/22760 useless extension candidates. Maximal degree in co-relation 83972. Up to 40950 conditions per place. [2025-02-08 14:12:32,873 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 49 selfloop transitions, 25 changer transitions 0/84 dead transitions. [2025-02-08 14:12:32,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 470 flow [2025-02-08 14:12:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:12:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:12:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2025-02-08 14:12:32,881 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2972972972972973 [2025-02-08 14:12:32,881 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 208 flow. Second operand 10 states and 220 transitions. [2025-02-08 14:12:32,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 470 flow [2025-02-08 14:12:32,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 412 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-08 14:12:32,888 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 348 flow [2025-02-08 14:12:32,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=348, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2025-02-08 14:12:32,889 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2025-02-08 14:12:32,889 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 348 flow [2025-02-08 14:12:32,889 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 14:12:32,889 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:32,889 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:32,895 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 14:12:33,089 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 14:12:33,090 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:12:33,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash 787537378, now seen corresponding path program 1 times [2025-02-08 14:12:33,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:33,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018323194] [2025-02-08 14:12:33,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:33,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:33,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:12:33,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:12:33,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:33,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:33,184 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 14:12:33,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018323194] [2025-02-08 14:12:33,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018323194] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:33,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:33,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:12:33,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360424457] [2025-02-08 14:12:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:33,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:12:33,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:33,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:12:33,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:12:33,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 74 [2025-02-08 14:12:33,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 348 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 14:12:33,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:33,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 74 [2025-02-08 14:12:33,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:38,006 INFO L124 PetriNetUnfolderBase]: 45377/61758 cut-off events. [2025-02-08 14:12:38,006 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2025-02-08 14:12:38,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123245 conditions, 61758 events. 45377/61758 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 3656. Compared 435198 event pairs, 16524 based on Foata normal form. 0/34658 useless extension candidates. Maximal degree in co-relation 123178. Up to 36740 conditions per place. [2025-02-08 14:12:38,286 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 106 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2025-02-08 14:12:38,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 120 transitions, 643 flow [2025-02-08 14:12:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:12:38,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:12:38,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2025-02-08 14:12:38,287 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2025-02-08 14:12:38,287 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 348 flow. Second operand 3 states and 140 transitions. [2025-02-08 14:12:38,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 120 transitions, 643 flow [2025-02-08 14:12:38,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 619 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-08 14:12:38,289 INFO L231 Difference]: Finished difference. Result has 81 places, 85 transitions, 338 flow [2025-02-08 14:12:38,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=81, PETRI_TRANSITIONS=85} [2025-02-08 14:12:38,290 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2025-02-08 14:12:38,290 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 85 transitions, 338 flow [2025-02-08 14:12:38,290 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 14:12:38,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:38,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:38,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:12:38,291 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:12:38,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:38,291 INFO L85 PathProgramCache]: Analyzing trace with hash 787537376, now seen corresponding path program 1 times [2025-02-08 14:12:38,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:38,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679952451] [2025-02-08 14:12:38,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:38,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:38,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:12:38,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:12:38,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:38,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:38,415 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 14:12:38,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:38,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679952451] [2025-02-08 14:12:38,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679952451] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:38,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:38,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:12:38,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198122026] [2025-02-08 14:12:38,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:38,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:12:38,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:38,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:12:38,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:12:38,417 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 74 [2025-02-08 14:12:38,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 338 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 14:12:38,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:38,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 74 [2025-02-08 14:12:38,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:43,811 INFO L124 PetriNetUnfolderBase]: 49957/67815 cut-off events. [2025-02-08 14:12:43,812 INFO L125 PetriNetUnfolderBase]: For 3445/3445 co-relation queries the response was YES. [2025-02-08 14:12:43,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142455 conditions, 67815 events. 49957/67815 cut-off events. For 3445/3445 co-relation queries the response was YES. Maximal size of possible extension queue 3723. Compared 476321 event pairs, 46847 based on Foata normal form. 1549/43417 useless extension candidates. Maximal degree in co-relation 142361. Up to 59852 conditions per place. [2025-02-08 14:12:44,125 INFO L140 encePairwiseOnDemand]: 62/74 looper letters, 114 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2025-02-08 14:12:44,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 131 transitions, 739 flow [2025-02-08 14:12:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:12:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:12:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 185 transitions. [2025-02-08 14:12:44,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-08 14:12:44,127 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 338 flow. Second operand 5 states and 185 transitions. [2025-02-08 14:12:44,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 131 transitions, 739 flow [2025-02-08 14:12:44,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 737 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:12:44,149 INFO L231 Difference]: Finished difference. Result has 86 places, 87 transitions, 381 flow [2025-02-08 14:12:44,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=86, PETRI_TRANSITIONS=87} [2025-02-08 14:12:44,149 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 9 predicate places. [2025-02-08 14:12:44,149 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 381 flow [2025-02-08 14:12:44,150 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 14:12:44,150 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:44,150 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:44,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:12:44,150 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:12:44,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:44,150 INFO L85 PathProgramCache]: Analyzing trace with hash 119836361, now seen corresponding path program 1 times [2025-02-08 14:12:44,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:44,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720093375] [2025-02-08 14:12:44,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:44,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:44,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:12:44,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:12:44,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:44,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:44,183 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 14:12:44,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720093375] [2025-02-08 14:12:44,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720093375] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:44,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:44,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:12:44,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060637101] [2025-02-08 14:12:44,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:44,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:12:44,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:44,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:12:44,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:12:44,184 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 74 [2025-02-08 14:12:44,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 381 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 14:12:44,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:44,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 74 [2025-02-08 14:12:44,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand