./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.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-bad-buffer-mult-alt.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 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:10:50,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:10:50,052 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:10:50,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:10:50,057 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:10:50,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:10:50,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:10:50,086 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:10:50,086 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:10:50,090 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:10:50,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:10:50,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:10:50,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:10:50,091 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:10:50,092 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:10:50,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:10:50,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:10:50,092 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 -> 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f [2025-02-08 14:10:50,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:10:50,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:10:50,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:10:50,295 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:10:50,295 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:10:50,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2025-02-08 14:10:51,493 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/83642934f/4da8df8d798c480ca212b263880adb18/FLAGf10063e35 [2025-02-08 14:10:51,848 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:10:51,849 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2025-02-08 14:10:51,860 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/83642934f/4da8df8d798c480ca212b263880adb18/FLAGf10063e35 [2025-02-08 14:10:52,092 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/83642934f/4da8df8d798c480ca212b263880adb18 [2025-02-08 14:10:52,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:10:52,096 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:10:52,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:10:52,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:10:52,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:10:52,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390b6cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52, skipping insertion in model container [2025-02-08 14:10:52,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,120 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:10:52,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:10:52,278 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:10:52,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:10:52,329 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:10:52,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52 WrapperNode [2025-02-08 14:10:52,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:10:52,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:10:52,332 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:10:52,332 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:10:52,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,346 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,378 INFO L138 Inliner]: procedures = 25, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 341 [2025-02-08 14:10:52,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:10:52,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:10:52,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:10:52,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:10:52,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,402 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 14:10:52,403 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,419 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,421 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,426 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,428 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:10:52,429 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:10:52,429 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:10:52,429 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:10:52,432 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (1/1) ... [2025-02-08 14:10:52,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:10:52,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:52,480 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 14:10:52,483 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 14:10:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:10:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:10:52,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:10:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:10:52,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:10:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:10:52,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:10:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 14:10:52,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 14:10:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:10:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:10:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:10:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:10:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:10:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:10:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:10:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:10:52,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:10:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:10:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:10:52,516 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 14:10:52,607 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:10:52,609 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:10:52,865 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97: ~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 14:10:52,865 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94: havoc #t~ret10#1; [2025-02-08 14:10:52,865 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94-1: havoc #t~mem9#1; [2025-02-08 14:10:52,865 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94-2: ~total~0 := #t~ret10#1; [2025-02-08 14:10:52,865 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret10#1 && #t~ret10#1 <= 2147483647; [2025-02-08 14:10:52,866 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:10:52,866 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94-5: havoc plus_#t~short37#1, plus_#t~short38#1, plus_~a#1, plus_~b#1; [2025-02-08 14:10:52,866 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94-6: #t~ret10#1 := plus_#res#1; [2025-02-08 14:10:52,866 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99: [2025-02-08 14:10:52,866 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95: havoc #t~post11#1; [2025-02-08 14:10:52,866 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95-1: assume 1 + #t~post11#1 <= 2147483647; [2025-02-08 14:10:52,866 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95-1: assume !(1 + #t~post11#1 <= 2147483647); [2025-02-08 14:10:52,866 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95-2: ~q1_front~0 := 1 + #t~post11#1; [2025-02-08 14:10:52,866 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95-3: assume 1 + #t~post11#1 >= -2147483648; [2025-02-08 14:10:52,866 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95-3: assume !(1 + #t~post11#1 >= -2147483648); [2025-02-08 14:10:52,866 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95-4: #t~post11#1 := ~q1_front~0; [2025-02-08 14:10:52,866 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96: [2025-02-08 14:10:52,941 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114: [2025-02-08 14:10:52,941 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115: ~cond~3#1 := (if 0 == (if ~j~0 < ~M~0 || ~q2_front~0 < ~q2_back~0 then 1 else 0) then 0 else 1); [2025-02-08 14:10:52,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112: havoc #t~ret13#1; [2025-02-08 14:10:52,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112-1: havoc #t~mem12#1; [2025-02-08 14:10:52,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112-2: ~total~0 := #t~ret13#1; [2025-02-08 14:10:52,942 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret13#1 && #t~ret13#1 <= 2147483647; [2025-02-08 14:10:52,943 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:10:52,943 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112-5: havoc plus_#t~short37#1, plus_#t~short38#1, plus_~a#1, plus_~b#1; [2025-02-08 14:10:52,943 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112-6: #t~ret13#1 := plus_#res#1; [2025-02-08 14:10:52,943 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117: [2025-02-08 14:10:52,943 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113: havoc #t~post14#1; [2025-02-08 14:10:52,943 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113-1: assume 1 + #t~post14#1 <= 2147483647; [2025-02-08 14:10:52,943 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113-1: assume !(1 + #t~post14#1 <= 2147483647); [2025-02-08 14:10:52,943 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113-2: ~q2_front~0 := 1 + #t~post14#1; [2025-02-08 14:10:52,943 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113-3: assume 1 + #t~post14#1 >= -2147483648; [2025-02-08 14:10:52,944 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113-3: assume !(1 + #t~post14#1 >= -2147483648); [2025-02-08 14:10:52,944 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113-4: #t~post14#1 := ~q2_front~0; [2025-02-08 14:10:53,102 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:10:53,103 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:10:53,510 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L173 is not an error location. [2025-02-08 14:10:53,510 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L173 is not an error location. [2025-02-08 14:10:53,511 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:10:53,511 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:10:53,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:10:53 BoogieIcfgContainer [2025-02-08 14:10:53,511 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:10:53,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:10:53,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:10:53,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:10:53,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:10:52" (1/3) ... [2025-02-08 14:10:53,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4e7941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:10:53, skipping insertion in model container [2025-02-08 14:10:53,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:52" (2/3) ... [2025-02-08 14:10:53,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4e7941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:10:53, skipping insertion in model container [2025-02-08 14:10:53,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:10:53" (3/3) ... [2025-02-08 14:10:53,518 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2025-02-08 14:10:53,529 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:10:53,531 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-buffer-mult-alt.wvr.c that has 5 procedures, 73 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-02-08 14:10:53,531 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:10:53,668 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 14:10:53,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 76 transitions, 180 flow [2025-02-08 14:10:53,764 INFO L124 PetriNetUnfolderBase]: 4/72 cut-off events. [2025-02-08 14:10:53,766 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:10:53,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 72 events. 4/72 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 229 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2025-02-08 14:10:53,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 76 transitions, 180 flow [2025-02-08 14:10:53,775 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 161 flow [2025-02-08 14:10:53,783 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:10:53,804 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;@13790630, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:10:53,804 INFO L334 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2025-02-08 14:10:53,806 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:10:53,806 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:10:53,806 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:10:53,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:53,809 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:10:53,809 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 14:10:53,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:53,813 INFO L85 PathProgramCache]: Analyzing trace with hash 912850, now seen corresponding path program 1 times [2025-02-08 14:10:53,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:53,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597696000] [2025-02-08 14:10:53,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:53,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:53,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:10:53,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:10:53,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:53,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:54,046 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 14:10:54,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:54,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597696000] [2025-02-08 14:10:54,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597696000] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:10:54,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:10:54,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:10:54,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606227592] [2025-02-08 14:10:54,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:10:54,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:10:54,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:54,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:10:54,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:10:54,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 76 [2025-02-08 14:10:54,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:54,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:54,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 76 [2025-02-08 14:10:54,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:58,572 INFO L124 PetriNetUnfolderBase]: 39178/52449 cut-off events. [2025-02-08 14:10:58,573 INFO L125 PetriNetUnfolderBase]: For 1314/1314 co-relation queries the response was YES. [2025-02-08 14:10:58,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106218 conditions, 52449 events. 39178/52449 cut-off events. For 1314/1314 co-relation queries the response was YES. Maximal size of possible extension queue 3140. Compared 355088 event pairs, 36482 based on Foata normal form. 2/29006 useless extension candidates. Maximal degree in co-relation 100294. Up to 51586 conditions per place. [2025-02-08 14:10:59,248 INFO L140 encePairwiseOnDemand]: 62/76 looper letters, 46 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2025-02-08 14:10:59,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 62 transitions, 249 flow [2025-02-08 14:10:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:10:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:10:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2025-02-08 14:10:59,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3815789473684211 [2025-02-08 14:10:59,262 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 161 flow. Second operand 4 states and 116 transitions. [2025-02-08 14:10:59,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 62 transitions, 249 flow [2025-02-08 14:10:59,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 62 transitions, 236 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-08 14:10:59,769 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 144 flow [2025-02-08 14:10:59,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2025-02-08 14:10:59,773 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -12 predicate places. [2025-02-08 14:10:59,773 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 144 flow [2025-02-08 14:10:59,773 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 14:10:59,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:59,773 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-08 14:10:59,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:10:59,774 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:10:59,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:59,774 INFO L85 PathProgramCache]: Analyzing trace with hash 28299161, now seen corresponding path program 1 times [2025-02-08 14:10:59,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:59,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886293790] [2025-02-08 14:10:59,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:59,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:59,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 14:10:59,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 14:10:59,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:59,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:59,942 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 14:10:59,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:59,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886293790] [2025-02-08 14:10:59,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886293790] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:10:59,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:10:59,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:10:59,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69304309] [2025-02-08 14:10:59,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:10:59,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:10:59,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:59,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:10:59,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:10:59,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 76 [2025-02-08 14:10:59,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 144 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 14:10:59,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:59,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 76 [2025-02-08 14:10:59,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:03,742 INFO L124 PetriNetUnfolderBase]: 39180/52457 cut-off events. [2025-02-08 14:11:03,742 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2025-02-08 14:11:03,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105439 conditions, 52457 events. 39180/52457 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 3140. Compared 354789 event pairs, 36482 based on Foata normal form. 2/29016 useless extension candidates. Maximal degree in co-relation 105391. Up to 51595 conditions per place. [2025-02-08 14:11:04,018 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 51 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2025-02-08 14:11:04,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 68 transitions, 282 flow [2025-02-08 14:11:04,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2025-02-08 14:11:04,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3815789473684211 [2025-02-08 14:11:04,023 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 144 flow. Second operand 4 states and 116 transitions. [2025-02-08 14:11:04,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 68 transitions, 282 flow [2025-02-08 14:11:04,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 260 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:11:04,026 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 188 flow [2025-02-08 14:11:04,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, 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=188, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2025-02-08 14:11:04,028 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -9 predicate places. [2025-02-08 14:11:04,028 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 188 flow [2025-02-08 14:11:04,028 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 14:11:04,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:04,028 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:11:04,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:11:04,028 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 14:11:04,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:04,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1247636567, now seen corresponding path program 1 times [2025-02-08 14:11:04,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:04,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211922889] [2025-02-08 14:11:04,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:04,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:04,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:04,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:04,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:04,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:04,157 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 14:11:04,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:04,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211922889] [2025-02-08 14:11:04,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211922889] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:04,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360878590] [2025-02-08 14:11:04,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:04,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:04,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:04,165 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 14:11:04,165 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 14:11:04,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:04,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:04,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:04,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:04,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:04,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:04,284 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 14:11:04,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:04,321 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 14:11:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360878590] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:04,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:04,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-02-08 14:11:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789037556] [2025-02-08 14:11:04,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:04,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:11:04,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:04,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:11:04,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:11:04,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 76 [2025-02-08 14:11:04,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 188 flow. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 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 14:11:04,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:04,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 76 [2025-02-08 14:11:04,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:08,497 INFO L124 PetriNetUnfolderBase]: 39186/52481 cut-off events. [2025-02-08 14:11:08,497 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2025-02-08 14:11:08,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105515 conditions, 52481 events. 39186/52481 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 3140. Compared 354808 event pairs, 36482 based on Foata normal form. 0/29034 useless extension candidates. Maximal degree in co-relation 105402. Up to 51598 conditions per place. [2025-02-08 14:11:08,722 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 51 selfloop transitions, 25 changer transitions 0/86 dead transitions. [2025-02-08 14:11:08,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 86 transitions, 418 flow [2025-02-08 14:11:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:11:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:11:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2025-02-08 14:11:08,724 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29210526315789476 [2025-02-08 14:11:08,724 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 188 flow. Second operand 10 states and 222 transitions. [2025-02-08 14:11:08,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 86 transitions, 418 flow [2025-02-08 14:11:08,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 418 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:11:08,726 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 350 flow [2025-02-08 14:11:08,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2025-02-08 14:11:08,727 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2025-02-08 14:11:08,727 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 350 flow [2025-02-08 14:11:08,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 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 14:11:08,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:08,727 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:08,734 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 14:11:08,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:08,932 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:11:08,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash -48026158, now seen corresponding path program 1 times [2025-02-08 14:11:08,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:08,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215311541] [2025-02-08 14:11:08,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:08,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:08,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:11:08,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:11:08,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:08,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:09,124 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 14:11:09,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:09,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215311541] [2025-02-08 14:11:09,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215311541] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:09,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:09,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:09,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31651573] [2025-02-08 14:11:09,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:09,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:09,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:09,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:09,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:09,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2025-02-08 14:11:09,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 350 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 14:11:09,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:09,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2025-02-08 14:11:09,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:13,955 INFO L124 PetriNetUnfolderBase]: 44269/59665 cut-off events. [2025-02-08 14:11:13,956 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2025-02-08 14:11:14,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120049 conditions, 59665 events. 44269/59665 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 3421. Compared 404554 event pairs, 41369 based on Foata normal form. 1159/36706 useless extension candidates. Maximal degree in co-relation 119955. Up to 51613 conditions per place. [2025-02-08 14:11:14,230 INFO L140 encePairwiseOnDemand]: 66/76 looper letters, 118 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2025-02-08 14:11:14,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 133 transitions, 766 flow [2025-02-08 14:11:14,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:14,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2025-02-08 14:11:14,236 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5493421052631579 [2025-02-08 14:11:14,236 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 350 flow. Second operand 4 states and 167 transitions. [2025-02-08 14:11:14,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 133 transitions, 766 flow [2025-02-08 14:11:14,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 133 transitions, 672 flow, removed 29 selfloop flow, removed 4 redundant places. [2025-02-08 14:11:14,241 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 307 flow [2025-02-08 14:11:14,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2025-02-08 14:11:14,242 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2025-02-08 14:11:14,242 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 307 flow [2025-02-08 14:11:14,242 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 14:11:14,242 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:14,242 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:14,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:11:14,243 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:11:14,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:14,244 INFO L85 PathProgramCache]: Analyzing trace with hash 361301435, now seen corresponding path program 1 times [2025-02-08 14:11:14,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:14,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640076868] [2025-02-08 14:11:14,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:14,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:14,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:14,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:14,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:14,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:14,295 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 14:11:14,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:14,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640076868] [2025-02-08 14:11:14,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640076868] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:14,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:14,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:11:14,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018898206] [2025-02-08 14:11:14,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:14,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:14,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:14,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:14,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:14,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2025-02-08 14:11:14,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 307 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 14:11:14,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:14,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2025-02-08 14:11:14,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:18,115 INFO L124 PetriNetUnfolderBase]: 39862/53442 cut-off events. [2025-02-08 14:11:18,116 INFO L125 PetriNetUnfolderBase]: For 2941/2941 co-relation queries the response was YES. [2025-02-08 14:11:18,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117306 conditions, 53442 events. 39862/53442 cut-off events. For 2941/2941 co-relation queries the response was YES. Maximal size of possible extension queue 2902. Compared 354992 event pairs, 37108 based on Foata normal form. 0/31571 useless extension candidates. Maximal degree in co-relation 117224. Up to 52836 conditions per place. [2025-02-08 14:11:18,438 INFO L140 encePairwiseOnDemand]: 74/76 looper letters, 72 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2025-02-08 14:11:18,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 451 flow [2025-02-08 14:11:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-02-08 14:11:18,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2025-02-08 14:11:18,439 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 307 flow. Second operand 3 states and 104 transitions. [2025-02-08 14:11:18,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 451 flow [2025-02-08 14:11:18,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 85 transitions, 447 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:18,443 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 303 flow [2025-02-08 14:11:18,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2025-02-08 14:11:18,443 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2025-02-08 14:11:18,443 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 303 flow [2025-02-08 14:11:18,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:18,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:18,444 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:18,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:11:18,444 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:11:18,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash 361301436, now seen corresponding path program 1 times [2025-02-08 14:11:18,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:18,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466018777] [2025-02-08 14:11:18,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:18,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:18,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:18,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:18,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:18,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:18,480 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 14:11:18,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:18,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466018777] [2025-02-08 14:11:18,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466018777] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:18,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:18,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:18,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495241362] [2025-02-08 14:11:18,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:18,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:18,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:18,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:18,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:18,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2025-02-08 14:11:18,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 303 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 14:11:18,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:18,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2025-02-08 14:11:18,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand