./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-series3.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-series3.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 c031a4ce44fce05276ee0c322906dbff86776176e55e116d257d2b83e85a253c --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:12:41,968 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:12:42,030 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:12:42,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:12:42,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:12:42,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:12:42,071 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:12:42,071 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:12:42,071 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:12:42,072 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:12:42,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:12:42,072 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:12:42,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:12:42,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:12:42,073 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:12:42,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:12:42,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:12:42,073 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:12:42,073 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:12:42,073 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:12:42,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:12:42,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:12:42,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:12:42,073 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:12:42,073 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:12:42,074 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:12:42,074 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:12:42,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:12:42,074 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:12:42,074 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:12:42,074 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:12:42,074 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:12:42,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:12:42,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:12:42,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:12:42,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:12:42,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:12:42,074 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:12:42,075 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:12:42,075 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:12:42,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:12:42,075 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:12:42,075 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:12:42,075 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:12:42,075 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:12:42,075 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 -> c031a4ce44fce05276ee0c322906dbff86776176e55e116d257d2b83e85a253c [2025-02-08 14:12:42,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:12:42,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:12:42,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:12:42,400 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:12:42,401 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:12:42,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-series3.wvr.c [2025-02-08 14:12:43,802 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b91a523e8/23c6b91165a34196b1d4e1339cc94350/FLAG3e1589dd8 [2025-02-08 14:12:44,050 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:12:44,051 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series3.wvr.c [2025-02-08 14:12:44,061 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b91a523e8/23c6b91165a34196b1d4e1339cc94350/FLAG3e1589dd8 [2025-02-08 14:12:44,082 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b91a523e8/23c6b91165a34196b1d4e1339cc94350 [2025-02-08 14:12:44,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:12:44,088 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:12:44,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:12:44,090 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:12:44,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:12:44,094 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,095 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@402749ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44, skipping insertion in model container [2025-02-08 14:12:44,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,118 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:12:44,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:12:44,338 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:12:44,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:12:44,394 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:12:44,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44 WrapperNode [2025-02-08 14:12:44,395 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:12:44,396 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:12:44,396 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:12:44,397 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:12:44,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,414 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,448 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 369 [2025-02-08 14:12:44,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:12:44,449 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:12:44,449 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:12:44,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:12:44,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,499 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-02-08 14:12:44,499 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,499 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,517 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:12:44,530 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:12:44,530 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:12:44,530 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:12:44,531 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (1/1) ... [2025-02-08 14:12:44,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:12:44,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:44,567 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 14:12:44,573 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 14:12:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:12:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:12:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:12:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:12:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:12:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:12:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:12:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:12:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:12:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:12:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:12:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 14:12:44,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 14:12:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:12:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:12:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:12:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:12:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:12:44,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:12:44,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:12:44,596 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 14:12:44,707 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:12:44,709 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:12:45,028 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L102: ~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 14:12:45,030 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99: havoc #t~ret11#1; [2025-02-08 14:12:45,030 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99-1: havoc #t~mem10#1; [2025-02-08 14:12:45,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99-2: ~total~0 := #t~ret11#1; [2025-02-08 14:12:45,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret11#1 && #t~ret11#1 <= 2147483647; [2025-02-08 14:12:45,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:45,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99-5: havoc plus_#t~short35#1, plus_#t~short36#1, plus_~a#1, plus_~b#1; [2025-02-08 14:12:45,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99-6: #t~ret11#1 := plus_#res#1; [2025-02-08 14:12:45,031 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L104: [2025-02-08 14:12:45,032 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100: havoc #t~post12#1; [2025-02-08 14:12:45,032 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100-1: assume 1 + #t~post12#1 <= 2147483647; [2025-02-08 14:12:45,032 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100-1: assume !(1 + #t~post12#1 <= 2147483647); [2025-02-08 14:12:45,032 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100-2: ~q1_front~0 := 1 + #t~post12#1; [2025-02-08 14:12:45,032 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100-3: assume 1 + #t~post12#1 >= -2147483648; [2025-02-08 14:12:45,032 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100-3: assume !(1 + #t~post12#1 >= -2147483648); [2025-02-08 14:12:45,032 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100-4: #t~post12#1 := ~q1_front~0; [2025-02-08 14:12:45,032 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L101: [2025-02-08 14:12:45,128 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L122: [2025-02-08 14:12:45,128 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118: havoc #t~post15#1; [2025-02-08 14:12:45,128 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118-1: assume 1 + #t~post15#1 <= 2147483647; [2025-02-08 14:12:45,128 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118-1: assume !(1 + #t~post15#1 <= 2147483647); [2025-02-08 14:12:45,128 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118-2: ~q2_front~0 := 1 + #t~post15#1; [2025-02-08 14:12:45,129 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118-3: assume 1 + #t~post15#1 >= -2147483648; [2025-02-08 14:12:45,129 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118-3: assume !(1 + #t~post15#1 >= -2147483648); [2025-02-08 14:12:45,129 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118-4: #t~post15#1 := ~q2_front~0; [2025-02-08 14:12:45,129 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L119: [2025-02-08 14:12:45,129 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L120: ~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 14:12:45,129 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117: havoc #t~ret14#1; [2025-02-08 14:12:45,129 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117-1: havoc #t~mem13#1; [2025-02-08 14:12:45,129 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117-2: ~total~0 := #t~ret14#1; [2025-02-08 14:12:45,129 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret14#1 && #t~ret14#1 <= 2147483647; [2025-02-08 14:12:45,129 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:45,129 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117-5: havoc plus_#t~short35#1, plus_#t~short36#1, plus_~a#1, plus_~b#1; [2025-02-08 14:12:45,129 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117-6: #t~ret14#1 := plus_#res#1; [2025-02-08 14:12:45,327 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:12:45,327 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:12:45,762 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L174 is not an error location. [2025-02-08 14:12:45,763 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L174 is not an error location. [2025-02-08 14:12:45,764 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:12:45,765 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:12:45,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:12:45 BoogieIcfgContainer [2025-02-08 14:12:45,765 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:12:45,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:12:45,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:12:45,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:12:45,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:12:44" (1/3) ... [2025-02-08 14:12:45,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8999f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:12:45, skipping insertion in model container [2025-02-08 14:12:45,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:44" (2/3) ... [2025-02-08 14:12:45,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8999f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:12:45, skipping insertion in model container [2025-02-08 14:12:45,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:12:45" (3/3) ... [2025-02-08 14:12:45,775 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series3.wvr.c [2025-02-08 14:12:45,790 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:12:45,791 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-series3.wvr.c that has 5 procedures, 78 locations, 1 initial locations, 7 loop locations, and 32 error locations. [2025-02-08 14:12:45,792 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:12:45,922 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 14:12:45,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 192 flow [2025-02-08 14:12:46,006 INFO L124 PetriNetUnfolderBase]: 5/78 cut-off events. [2025-02-08 14:12:46,008 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:12:46,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 78 events. 5/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 247 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2025-02-08 14:12:46,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 192 flow [2025-02-08 14:12:46,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 76 transitions, 173 flow [2025-02-08 14:12:46,023 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:12:46,035 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;@12fd68c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:12:46,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2025-02-08 14:12:46,040 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:12:46,041 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:12:46,041 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:12:46,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:46,042 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:12:46,042 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2025-02-08 14:12:46,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:46,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1036434, now seen corresponding path program 1 times [2025-02-08 14:12:46,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:46,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773888683] [2025-02-08 14:12:46,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:46,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:46,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:12:46,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:12:46,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:46,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:46,364 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 14:12:46,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:46,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773888683] [2025-02-08 14:12:46,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773888683] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:46,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:46,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:12:46,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16653507] [2025-02-08 14:12:46,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:46,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:12:46,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:46,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:12:46,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:12:46,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 82 [2025-02-08 14:12:46,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 14:12:46,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:46,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 82 [2025-02-08 14:12:46,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:52,694 INFO L124 PetriNetUnfolderBase]: 43844/58705 cut-off events. [2025-02-08 14:12:52,694 INFO L125 PetriNetUnfolderBase]: For 1209/1209 co-relation queries the response was YES. [2025-02-08 14:12:52,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118796 conditions, 58705 events. 43844/58705 cut-off events. For 1209/1209 co-relation queries the response was YES. Maximal size of possible extension queue 3570. Compared 397131 event pairs, 40998 based on Foata normal form. 3/31514 useless extension candidates. Maximal degree in co-relation 112836. Up to 57726 conditions per place. [2025-02-08 14:12:53,074 INFO L140 encePairwiseOnDemand]: 61/82 looper letters, 59 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2025-02-08 14:12:53,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 319 flow [2025-02-08 14:12:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:12:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:12:53,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2025-02-08 14:12:53,088 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2025-02-08 14:12:53,089 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 173 flow. Second operand 4 states and 140 transitions. [2025-02-08 14:12:53,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 319 flow [2025-02-08 14:12:53,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 306 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-08 14:12:53,627 INFO L231 Difference]: Finished difference. Result has 78 places, 80 transitions, 238 flow [2025-02-08 14:12:53,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=78, PETRI_TRANSITIONS=80} [2025-02-08 14:12:53,633 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -6 predicate places. [2025-02-08 14:12:53,633 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 80 transitions, 238 flow [2025-02-08 14:12:53,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 14:12:53,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:53,633 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:12:53,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:12:53,634 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2025-02-08 14:12:53,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:53,635 INFO L85 PathProgramCache]: Analyzing trace with hash 812587049, now seen corresponding path program 1 times [2025-02-08 14:12:53,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:53,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899910415] [2025-02-08 14:12:53,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:53,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:53,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:53,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:53,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:53,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:53,850 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 14:12:53,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:53,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899910415] [2025-02-08 14:12:53,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899910415] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:53,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652116308] [2025-02-08 14:12:53,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:53,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:53,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:53,855 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 14:12:53,857 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 14:12:53,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:53,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:53,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:53,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:53,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:12:53,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:54,016 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 14:12:54,016 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:12:54,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652116308] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:54,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:12:54,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:12:54,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383259665] [2025-02-08 14:12:54,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:54,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:12:54,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:54,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:12:54,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:12:54,045 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 82 [2025-02-08 14:12:54,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 80 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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 14:12:54,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:54,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 82 [2025-02-08 14:12:54,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:58,947 INFO L124 PetriNetUnfolderBase]: 43844/58702 cut-off events. [2025-02-08 14:12:58,947 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2025-02-08 14:12:59,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118009 conditions, 58702 events. 43844/58702 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 3570. Compared 397418 event pairs, 40998 based on Foata normal form. 3/31516 useless extension candidates. Maximal degree in co-relation 117936. Up to 57711 conditions per place. [2025-02-08 14:12:59,304 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 49 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2025-02-08 14:12:59,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 77 transitions, 358 flow [2025-02-08 14:12:59,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:12:59,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:12:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2025-02-08 14:12:59,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3231707317073171 [2025-02-08 14:12:59,308 INFO L175 Difference]: Start difference. First operand has 78 places, 80 transitions, 238 flow. Second operand 6 states and 159 transitions. [2025-02-08 14:12:59,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 77 transitions, 358 flow [2025-02-08 14:12:59,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:12:59,312 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 260 flow [2025-02-08 14:12:59,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2025-02-08 14:12:59,312 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -4 predicate places. [2025-02-08 14:12:59,312 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 260 flow [2025-02-08 14:12:59,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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 14:12:59,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:59,313 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:12:59,323 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 14:12:59,513 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 14:12:59,514 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2025-02-08 14:12:59,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:59,514 INFO L85 PathProgramCache]: Analyzing trace with hash -579604300, now seen corresponding path program 1 times [2025-02-08 14:12:59,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:59,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360929555] [2025-02-08 14:12:59,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:59,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:59,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:12:59,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:12:59,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:59,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:59,642 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 14:12:59,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:59,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360929555] [2025-02-08 14:12:59,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360929555] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:59,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572012046] [2025-02-08 14:12:59,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:59,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:59,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:59,645 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 14:12:59,648 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 14:12:59,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:12:59,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:12:59,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:59,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:59,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:12:59,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:59,783 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 14:12:59,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:59,828 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 14:12:59,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572012046] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:59,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:59,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:12:59,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123572453] [2025-02-08 14:12:59,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:59,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:12:59,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:59,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:12:59,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:12:59,865 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 82 [2025-02-08 14:12:59,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 260 flow. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 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 14:12:59,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:59,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 82 [2025-02-08 14:12:59,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:04,162 INFO L124 PetriNetUnfolderBase]: 43853/58738 cut-off events. [2025-02-08 14:13:04,163 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2025-02-08 14:13:04,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118150 conditions, 58738 events. 43853/58738 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 3571. Compared 397556 event pairs, 40998 based on Foata normal form. 9/31558 useless extension candidates. Maximal degree in co-relation 117938. Up to 57726 conditions per place. [2025-02-08 14:13:04,455 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 56 selfloop transitions, 37 changer transitions 0/104 dead transitions. [2025-02-08 14:13:04,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 104 transitions, 620 flow [2025-02-08 14:13:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:13:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:13:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2025-02-08 14:13:04,457 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3073170731707317 [2025-02-08 14:13:04,457 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 260 flow. Second operand 10 states and 252 transitions. [2025-02-08 14:13:04,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 104 transitions, 620 flow [2025-02-08 14:13:04,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 104 transitions, 537 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-02-08 14:13:04,461 INFO L231 Difference]: Finished difference. Result has 87 places, 104 transitions, 475 flow [2025-02-08 14:13:04,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=475, PETRI_PLACES=87, PETRI_TRANSITIONS=104} [2025-02-08 14:13:04,462 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2025-02-08 14:13:04,462 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 104 transitions, 475 flow [2025-02-08 14:13:04,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 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 14:13:04,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:04,462 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:04,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 14:13:04,667 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 14:13:04,667 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2025-02-08 14:13:04,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash -194678144, now seen corresponding path program 1 times [2025-02-08 14:13:04,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:04,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578972621] [2025-02-08 14:13:04,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:04,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:04,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:13:04,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:13:04,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:04,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:04,823 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 14:13:04,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:04,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578972621] [2025-02-08 14:13:04,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578972621] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:04,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:04,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:13:04,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91178622] [2025-02-08 14:13:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:04,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:04,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:04,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:04,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:04,825 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 82 [2025-02-08 14:13:04,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 104 transitions, 475 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:04,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:04,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 82 [2025-02-08 14:13:04,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:13:10,836 INFO L124 PetriNetUnfolderBase]: 55056/74409 cut-off events. [2025-02-08 14:13:10,837 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2025-02-08 14:13:10,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149021 conditions, 74409 events. 55056/74409 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 4139. Compared 524792 event pairs, 13902 based on Foata normal form. 0/43012 useless extension candidates. Maximal degree in co-relation 148923. Up to 53046 conditions per place. [2025-02-08 14:13:11,240 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 124 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2025-02-08 14:13:11,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 140 transitions, 806 flow [2025-02-08 14:13:11,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:13:11,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:13:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2025-02-08 14:13:11,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6300813008130082 [2025-02-08 14:13:11,242 INFO L175 Difference]: Start difference. First operand has 87 places, 104 transitions, 475 flow. Second operand 3 states and 155 transitions. [2025-02-08 14:13:11,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 140 transitions, 806 flow [2025-02-08 14:13:11,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 140 transitions, 769 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-08 14:13:11,247 INFO L231 Difference]: Finished difference. Result has 88 places, 105 transitions, 452 flow [2025-02-08 14:13:11,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=452, PETRI_PLACES=88, PETRI_TRANSITIONS=105} [2025-02-08 14:13:11,247 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 4 predicate places. [2025-02-08 14:13:11,248 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 105 transitions, 452 flow [2025-02-08 14:13:11,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:13:11,248 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:13:11,248 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:13:11,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:13:11,248 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2025-02-08 14:13:11,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:13:11,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1740054076, now seen corresponding path program 1 times [2025-02-08 14:13:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:13:11,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983521673] [2025-02-08 14:13:11,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:13:11,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:13:11,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:13:11,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:13:11,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:13:11,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:13:11,354 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 14:13:11,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:13:11,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983521673] [2025-02-08 14:13:11,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983521673] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:13:11,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:13:11,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:13:11,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572354353] [2025-02-08 14:13:11,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:13:11,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:13:11,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:13:11,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:13:11,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:13:11,357 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 82 [2025-02-08 14:13:11,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 105 transitions, 452 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 14:13:11,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:13:11,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 82 [2025-02-08 14:13:11,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand