./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-series.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-series.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 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:12:29,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:12:29,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:12:29,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:12:29,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:12:29,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:12:29,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:12:29,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:12:29,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:12:29,690 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:12:29,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:12:29,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:12:29,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:12:29,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:12:29,692 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:12:29,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:12:29,693 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:12:29,693 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:12:29,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:12:29,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:12:29,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:12:29,693 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:12:29,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:12:29,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:12:29,694 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:12:29,694 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:12:29,694 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:12:29,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:12:29,694 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:12:29,694 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:12:29,695 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:12:29,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:12:29,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:12:29,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:12:29,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:12:29,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:12:29,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:12:29,696 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:12:29,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:12:29,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:12:29,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:12:29,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:12:29,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:12:29,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:12:29,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:12:29,697 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 -> 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c [2025-02-08 14:12:29,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:12:29,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:12:29,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:12:29,994 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:12:29,994 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:12:29,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2025-02-08 14:12:31,284 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cdf449252/fa8465e5cee84853800cbc42fd76ee70/FLAG432a33206 [2025-02-08 14:12:31,535 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:12:31,535 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2025-02-08 14:12:31,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cdf449252/fa8465e5cee84853800cbc42fd76ee70/FLAG432a33206 [2025-02-08 14:12:31,846 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cdf449252/fa8465e5cee84853800cbc42fd76ee70 [2025-02-08 14:12:31,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:12:31,849 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:12:31,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:12:31,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:12:31,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:12:31,856 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:12:31" (1/1) ... [2025-02-08 14:12:31,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e365b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:31, skipping insertion in model container [2025-02-08 14:12:31,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:12:31" (1/1) ... [2025-02-08 14:12:31,875 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:12:32,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:12:32,034 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:12:32,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:12:32,078 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:12:32,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32 WrapperNode [2025-02-08 14:12:32,079 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:12:32,080 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:12:32,081 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:12:32,081 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:12:32,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (1/1) ... [2025-02-08 14:12:32,094 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (1/1) ... [2025-02-08 14:12:32,115 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 369 [2025-02-08 14:12:32,115 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:12:32,116 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:12:32,116 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:12:32,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:12:32,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (1/1) ... [2025-02-08 14:12:32,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (1/1) ... [2025-02-08 14:12:32,133 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (1/1) ... [2025-02-08 14:12:32,153 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 14:12:32,153 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (1/1) ... [2025-02-08 14:12:32,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (1/1) ... [2025-02-08 14:12:32,162 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (1/1) ... [2025-02-08 14:12:32,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (1/1) ... [2025-02-08 14:12:32,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (1/1) ... [2025-02-08 14:12:32,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (1/1) ... [2025-02-08 14:12:32,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:12:32,168 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:12:32,168 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:12:32,168 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:12:32,169 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (1/1) ... [2025-02-08 14:12:32,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:12:32,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:32,203 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 14:12:32,208 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 14:12:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:12:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:12:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:12:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:12:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:12:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:12:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:12:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:12:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:12:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:12:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:12:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 14:12:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 14:12:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:12:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:12:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:12:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:12:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:12:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:12:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:12:32,227 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 14:12:32,318 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:12:32,320 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:12:32,553 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 14:12:32,554 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99: havoc #t~ret11#1; [2025-02-08 14:12:32,554 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99-1: havoc #t~mem10#1; [2025-02-08 14:12:32,554 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99-2: ~total~0 := #t~ret11#1; [2025-02-08 14:12:32,554 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 14:12:32,554 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:32,554 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 14:12:32,554 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99-6: #t~ret11#1 := plus_#res#1; [2025-02-08 14:12:32,554 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L104: [2025-02-08 14:12:32,554 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100: havoc #t~post12#1; [2025-02-08 14:12:32,555 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100-1: assume 1 + #t~post12#1 <= 2147483647; [2025-02-08 14:12:32,555 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100-1: assume !(1 + #t~post12#1 <= 2147483647); [2025-02-08 14:12:32,555 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100-2: ~q1_front~0 := 1 + #t~post12#1; [2025-02-08 14:12:32,555 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100-3: assume 1 + #t~post12#1 >= -2147483648; [2025-02-08 14:12:32,555 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100-3: assume !(1 + #t~post12#1 >= -2147483648); [2025-02-08 14:12:32,555 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L100-4: #t~post12#1 := ~q1_front~0; [2025-02-08 14:12:32,555 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L101: [2025-02-08 14:12:32,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L122: [2025-02-08 14:12:32,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118: havoc #t~post15#1; [2025-02-08 14:12:32,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118-1: assume 1 + #t~post15#1 <= 2147483647; [2025-02-08 14:12:32,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118-1: assume !(1 + #t~post15#1 <= 2147483647); [2025-02-08 14:12:32,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118-2: ~q2_front~0 := 1 + #t~post15#1; [2025-02-08 14:12:32,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118-3: assume 1 + #t~post15#1 >= -2147483648; [2025-02-08 14:12:32,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118-3: assume !(1 + #t~post15#1 >= -2147483648); [2025-02-08 14:12:32,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L118-4: #t~post15#1 := ~q2_front~0; [2025-02-08 14:12:32,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L119: [2025-02-08 14:12:32,628 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 14:12:32,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117: havoc #t~ret14#1; [2025-02-08 14:12:32,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117-1: havoc #t~mem13#1; [2025-02-08 14:12:32,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117-2: ~total~0 := #t~ret14#1; [2025-02-08 14:12:32,629 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 14:12:32,629 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:12:32,629 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 14:12:32,629 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117-6: #t~ret14#1 := plus_#res#1; [2025-02-08 14:12:32,823 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:12:32,823 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:12:33,200 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L174 is not an error location. [2025-02-08 14:12:33,200 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L174 is not an error location. [2025-02-08 14:12:33,201 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:12:33,201 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:12:33,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:12:33 BoogieIcfgContainer [2025-02-08 14:12:33,201 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:12:33,203 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:12:33,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:12:33,207 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:12:33,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:12:31" (1/3) ... [2025-02-08 14:12:33,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f860694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:12:33, skipping insertion in model container [2025-02-08 14:12:33,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:12:32" (2/3) ... [2025-02-08 14:12:33,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f860694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:12:33, skipping insertion in model container [2025-02-08 14:12:33,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:12:33" (3/3) ... [2025-02-08 14:12:33,209 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2025-02-08 14:12:33,223 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:12:33,225 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-series.wvr.c that has 5 procedures, 78 locations, 1 initial locations, 7 loop locations, and 32 error locations. [2025-02-08 14:12:33,225 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:12:33,373 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 14:12:33,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 192 flow [2025-02-08 14:12:33,455 INFO L124 PetriNetUnfolderBase]: 5/78 cut-off events. [2025-02-08 14:12:33,457 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:12:33,462 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 14:12:33,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 192 flow [2025-02-08 14:12:33,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 76 transitions, 173 flow [2025-02-08 14:12:33,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:12:33,491 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;@34d01e3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:12:33,492 INFO L334 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2025-02-08 14:12:33,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:12:33,496 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:12:33,496 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:12:33,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:33,497 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:12:33,498 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 14:12:33,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:33,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1036434, now seen corresponding path program 1 times [2025-02-08 14:12:33,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:33,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409082203] [2025-02-08 14:12:33,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:33,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:33,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:12:33,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:12:33,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:33,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:12:33,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:33,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409082203] [2025-02-08 14:12:33,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409082203] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:33,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:33,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:12:33,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248542739] [2025-02-08 14:12:33,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:33,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:12:33,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:33,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:12:33,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:12:33,848 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 82 [2025-02-08 14:12:33,851 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 14:12:33,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:33,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 82 [2025-02-08 14:12:33,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:38,281 INFO L124 PetriNetUnfolderBase]: 27644/36973 cut-off events. [2025-02-08 14:12:38,282 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2025-02-08 14:12:38,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75024 conditions, 36973 events. 27644/36973 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 2127. Compared 235320 event pairs, 25382 based on Foata normal form. 3/22250 useless extension candidates. Maximal degree in co-relation 70152. Up to 36430 conditions per place. [2025-02-08 14:12:38,620 INFO L140 encePairwiseOnDemand]: 57/82 looper letters, 55 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2025-02-08 14:12:38,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 303 flow [2025-02-08 14:12:38,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:12:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:12:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2025-02-08 14:12:38,634 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2025-02-08 14:12:38,637 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 173 flow. Second operand 4 states and 140 transitions. [2025-02-08 14:12:38,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 303 flow [2025-02-08 14:12:38,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 76 transitions, 290 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-08 14:12:38,703 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 230 flow [2025-02-08 14:12:38,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2025-02-08 14:12:38,710 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -10 predicate places. [2025-02-08 14:12:38,711 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 230 flow [2025-02-08 14:12:38,711 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 14:12:38,711 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:38,711 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:12:38,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:12:38,712 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 14:12:38,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:38,713 INFO L85 PathProgramCache]: Analyzing trace with hash 812587049, now seen corresponding path program 1 times [2025-02-08 14:12:38,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:38,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551444715] [2025-02-08 14:12:38,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:38,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:38,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:38,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:38,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:38,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:38,897 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 14:12:38,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:38,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551444715] [2025-02-08 14:12:38,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551444715] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:38,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847906467] [2025-02-08 14:12:38,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:38,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:38,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:38,903 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 14:12:38,905 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 14:12:38,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:12:39,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:12:39,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:39,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:39,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:12:39,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:39,063 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 14:12:39,064 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:12:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847906467] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:39,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:12:39,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:12:39,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549911330] [2025-02-08 14:12:39,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:39,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:12:39,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:39,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:12:39,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:12:39,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 82 [2025-02-08 14:12:39,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 230 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 14:12:39,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:39,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 82 [2025-02-08 14:12:39,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:41,952 INFO L124 PetriNetUnfolderBase]: 27644/36970 cut-off events. [2025-02-08 14:12:41,952 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2025-02-08 14:12:42,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74401 conditions, 36970 events. 27644/36970 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 2127. Compared 235245 event pairs, 25382 based on Foata normal form. 3/22252 useless extension candidates. Maximal degree in co-relation 74328. Up to 36415 conditions per place. [2025-02-08 14:12:42,231 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 45 selfloop transitions, 17 changer transitions 0/73 dead transitions. [2025-02-08 14:12:42,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 342 flow [2025-02-08 14:12:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:12:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:12:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2025-02-08 14:12:42,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3150406504065041 [2025-02-08 14:12:42,234 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 230 flow. Second operand 6 states and 155 transitions. [2025-02-08 14:12:42,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 342 flow [2025-02-08 14:12:42,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:12:42,237 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 252 flow [2025-02-08 14:12:42,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2025-02-08 14:12:42,237 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -8 predicate places. [2025-02-08 14:12:42,237 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 252 flow [2025-02-08 14:12:42,238 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 14:12:42,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:42,238 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:12:42,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:12:42,442 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 14:12:42,442 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 14:12:42,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:42,443 INFO L85 PathProgramCache]: Analyzing trace with hash -579604300, now seen corresponding path program 1 times [2025-02-08 14:12:42,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:42,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572779270] [2025-02-08 14:12:42,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:42,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:42,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:12:42,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:12:42,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:42,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:42,587 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 14:12:42,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:42,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572779270] [2025-02-08 14:12:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572779270] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:12:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180992516] [2025-02-08 14:12:42,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:42,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:42,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:12:42,592 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 14:12:42,595 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 14:12:42,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:12:42,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:12:42,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:42,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:42,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:12:42,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:12:42,733 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 14:12:42,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:12:42,775 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 14:12:42,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180992516] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:12:42,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:12:42,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:12:42,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992097892] [2025-02-08 14:12:42,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:12:42,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:12:42,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:42,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:12:42,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:12:42,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 82 [2025-02-08 14:12:42,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 252 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 14:12:42,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:42,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 82 [2025-02-08 14:12:42,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:45,713 INFO L124 PetriNetUnfolderBase]: 27653/37006 cut-off events. [2025-02-08 14:12:45,713 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2025-02-08 14:12:45,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74542 conditions, 37006 events. 27653/37006 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 2127. Compared 235538 event pairs, 25382 based on Foata normal form. 9/22294 useless extension candidates. Maximal degree in co-relation 74330. Up to 36430 conditions per place. [2025-02-08 14:12:45,868 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 52 selfloop transitions, 37 changer transitions 0/100 dead transitions. [2025-02-08 14:12:45,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 604 flow [2025-02-08 14:12:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:12:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:12:45,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2025-02-08 14:12:45,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3024390243902439 [2025-02-08 14:12:45,871 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 252 flow. Second operand 10 states and 248 transitions. [2025-02-08 14:12:45,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 604 flow [2025-02-08 14:12:45,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 100 transitions, 521 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-02-08 14:12:45,874 INFO L231 Difference]: Finished difference. Result has 83 places, 100 transitions, 467 flow [2025-02-08 14:12:45,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=467, PETRI_PLACES=83, PETRI_TRANSITIONS=100} [2025-02-08 14:12:45,875 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -1 predicate places. [2025-02-08 14:12:45,875 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 100 transitions, 467 flow [2025-02-08 14:12:45,876 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 14:12:45,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:45,876 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:45,883 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 14:12:46,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:12:46,080 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2025-02-08 14:12:46,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1740054077, now seen corresponding path program 1 times [2025-02-08 14:12:46,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:46,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142385541] [2025-02-08 14:12:46,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:46,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:46,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:12:46,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:12:46,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:46,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:46,212 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 14:12:46,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:46,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142385541] [2025-02-08 14:12:46,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142385541] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:46,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:46,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:12:46,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146864121] [2025-02-08 14:12:46,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:46,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:12:46,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:46,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:12:46,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:12:46,216 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 82 [2025-02-08 14:12:46,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 100 transitions, 467 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 14:12:46,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:46,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 82 [2025-02-08 14:12:46,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:50,600 INFO L124 PetriNetUnfolderBase]: 40370/54777 cut-off events. [2025-02-08 14:12:50,601 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2025-02-08 14:12:50,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109554 conditions, 54777 events. 40370/54777 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 2762. Compared 372941 event pairs, 14630 based on Foata normal form. 0/35100 useless extension candidates. Maximal degree in co-relation 109456. Up to 32682 conditions per place. [2025-02-08 14:12:50,919 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 119 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2025-02-08 14:12:50,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 135 transitions, 786 flow [2025-02-08 14:12:50,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:12:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:12:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2025-02-08 14:12:50,921 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2025-02-08 14:12:50,921 INFO L175 Difference]: Start difference. First operand has 83 places, 100 transitions, 467 flow. Second operand 3 states and 150 transitions. [2025-02-08 14:12:50,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 135 transitions, 786 flow [2025-02-08 14:12:50,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 135 transitions, 749 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-08 14:12:50,928 INFO L231 Difference]: Finished difference. Result has 84 places, 101 transitions, 444 flow [2025-02-08 14:12:50,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=444, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2025-02-08 14:12:50,930 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2025-02-08 14:12:50,930 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions, 444 flow [2025-02-08 14:12:50,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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 14:12:50,931 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:50,931 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:50,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:12:50,931 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2025-02-08 14:12:50,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:50,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1907026384, now seen corresponding path program 1 times [2025-02-08 14:12:50,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:50,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030169856] [2025-02-08 14:12:50,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:50,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:50,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:12:50,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:12:50,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:50,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:51,066 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 14:12:51,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:51,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030169856] [2025-02-08 14:12:51,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030169856] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:51,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:51,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:12:51,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30296628] [2025-02-08 14:12:51,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:51,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:12:51,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:51,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:12:51,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:12:51,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 82 [2025-02-08 14:12:51,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 14:12:51,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:51,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 82 [2025-02-08 14:12:51,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:12:55,784 INFO L124 PetriNetUnfolderBase]: 46011/62235 cut-off events. [2025-02-08 14:12:55,784 INFO L125 PetriNetUnfolderBase]: For 2880/2880 co-relation queries the response was YES. [2025-02-08 14:12:55,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132248 conditions, 62235 events. 46011/62235 cut-off events. For 2880/2880 co-relation queries the response was YES. Maximal size of possible extension queue 2855. Compared 417367 event pairs, 43034 based on Foata normal form. 1015/42432 useless extension candidates. Maximal degree in co-relation 132125. Up to 53263 conditions per place. [2025-02-08 14:12:56,131 INFO L140 encePairwiseOnDemand]: 70/82 looper letters, 122 selfloop transitions, 9 changer transitions 1/146 dead transitions. [2025-02-08 14:12:56,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 146 transitions, 878 flow [2025-02-08 14:12:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:12:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:12:56,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2025-02-08 14:12:56,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2025-02-08 14:12:56,133 INFO L175 Difference]: Start difference. First operand has 84 places, 101 transitions, 444 flow. Second operand 5 states and 200 transitions. [2025-02-08 14:12:56,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 146 transitions, 878 flow [2025-02-08 14:12:56,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 146 transitions, 875 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:12:56,137 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 495 flow [2025-02-08 14:12:56,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=495, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2025-02-08 14:12:56,138 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2025-02-08 14:12:56,138 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 495 flow [2025-02-08 14:12:56,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 14:12:56,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:12:56,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:12:56,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:12:56,139 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2025-02-08 14:12:56,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:12:56,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1402660532, now seen corresponding path program 1 times [2025-02-08 14:12:56,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:12:56,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897157417] [2025-02-08 14:12:56,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:12:56,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:12:56,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:12:56,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:12:56,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:12:56,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:12:56,232 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 14:12:56,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:12:56,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897157417] [2025-02-08 14:12:56,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897157417] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:12:56,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:12:56,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:12:56,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668166833] [2025-02-08 14:12:56,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:12:56,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:12:56,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:12:56,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:12:56,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:12:56,234 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 82 [2025-02-08 14:12:56,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 495 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 14:12:56,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:12:56,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 82 [2025-02-08 14:12:56,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand