./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.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-alt2.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 a79fe9fcfc95192d454ac05616e4d9a71dbf2bcc8b4fd9d21dcef47910a50542 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:10:52,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:10:52,276 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:10:52,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:10:52,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:10:52,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:10:52,298 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:10:52,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:10:52,299 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:10:52,299 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:10:52,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:10:52,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:10:52,299 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:10:52,299 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:10:52,299 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:10:52,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:10:52,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:10:52,299 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:10:52,300 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:10:52,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:10:52,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:10:52,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:10:52,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:10:52,303 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:10:52,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:10:52,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:10:52,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:10:52,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:10:52,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:10:52,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:10:52,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:10:52,304 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 -> a79fe9fcfc95192d454ac05616e4d9a71dbf2bcc8b4fd9d21dcef47910a50542 [2025-02-08 14:10:52,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:10:52,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:10:52,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:10:52,538 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:10:52,538 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:10:52,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2025-02-08 14:10:53,875 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a730feb38/0510eebc32d443b28a642650702d9f4c/FLAG0c5fcf4e1 [2025-02-08 14:10:54,165 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:10:54,165 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2025-02-08 14:10:54,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a730feb38/0510eebc32d443b28a642650702d9f4c/FLAG0c5fcf4e1 [2025-02-08 14:10:54,189 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a730feb38/0510eebc32d443b28a642650702d9f4c [2025-02-08 14:10:54,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:10:54,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:10:54,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:10:54,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:10:54,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:10:54,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58691968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54, skipping insertion in model container [2025-02-08 14:10:54,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,213 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:10:54,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:10:54,363 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:10:54,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:10:54,422 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:10:54,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54 WrapperNode [2025-02-08 14:10:54,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:10:54,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:10:54,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:10:54,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:10:54,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,471 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 337 [2025-02-08 14:10:54,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:10:54,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:10:54,472 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:10:54,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:10:54,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,504 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 14:10:54,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,515 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:10:54,527 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:10:54,527 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:10:54,527 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:10:54,528 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (1/1) ... [2025-02-08 14:10:54,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:10:54,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:54,557 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 14:10:54,566 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 14:10:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:10:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:10:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:10:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:10:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:10:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:10:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:10:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 14:10:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 14:10:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:10:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:10:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:10:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:10:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:10:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:10:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:10:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:10:54,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:10:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:10:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:10:54,582 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 14:10:54,657 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:10:54,659 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:10:54,854 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L93: ~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 14:10:54,854 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L90: havoc #t~ret10#1; [2025-02-08 14:10:54,854 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L90-1: havoc #t~mem9#1; [2025-02-08 14:10:54,854 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L90-2: ~total~0 := #t~ret10#1; [2025-02-08 14:10:54,854 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L90-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret10#1 && #t~ret10#1 <= 2147483647; [2025-02-08 14:10:54,855 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L90-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:10:54,855 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L90-5: havoc plus_#t~short37#1, plus_#t~short38#1, plus_~a#1, plus_~b#1; [2025-02-08 14:10:54,855 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L90-6: #t~ret10#1 := plus_#res#1; [2025-02-08 14:10:54,855 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95: [2025-02-08 14:10:54,855 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L91: havoc #t~post11#1; [2025-02-08 14:10:54,855 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L91-1: assume 1 + #t~post11#1 <= 2147483647; [2025-02-08 14:10:54,855 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L91-1: assume !(1 + #t~post11#1 <= 2147483647); [2025-02-08 14:10:54,856 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L91-2: ~q1_front~0 := 1 + #t~post11#1; [2025-02-08 14:10:54,856 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L91-3: assume 1 + #t~post11#1 >= -2147483648; [2025-02-08 14:10:54,856 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L91-3: assume !(1 + #t~post11#1 >= -2147483648); [2025-02-08 14:10:54,857 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L91-4: #t~post11#1 := ~q1_front~0; [2025-02-08 14:10:54,857 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92: [2025-02-08 14:10:54,926 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L110: [2025-02-08 14:10:54,927 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L111: ~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 14:10:54,927 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L108: havoc #t~ret13#1; [2025-02-08 14:10:54,927 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L108-1: havoc #t~mem12#1; [2025-02-08 14:10:54,927 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L108-2: ~total~0 := #t~ret13#1; [2025-02-08 14:10:54,927 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L108-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret13#1 && #t~ret13#1 <= 2147483647; [2025-02-08 14:10:54,927 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L108-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:10:54,927 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L108-5: havoc plus_#t~short37#1, plus_#t~short38#1, plus_~a#1, plus_~b#1; [2025-02-08 14:10:54,927 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L108-6: #t~ret13#1 := plus_#res#1; [2025-02-08 14:10:54,927 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113: [2025-02-08 14:10:54,928 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L109: havoc #t~post14#1; [2025-02-08 14:10:54,928 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L109-1: assume 1 + #t~post14#1 <= 2147483647; [2025-02-08 14:10:54,928 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L109-1: assume !(1 + #t~post14#1 <= 2147483647); [2025-02-08 14:10:54,928 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L109-2: ~q2_front~0 := 1 + #t~post14#1; [2025-02-08 14:10:54,928 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L109-3: assume 1 + #t~post14#1 >= -2147483648; [2025-02-08 14:10:54,928 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L109-3: assume !(1 + #t~post14#1 >= -2147483648); [2025-02-08 14:10:54,928 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L109-4: #t~post14#1 := ~q2_front~0; [2025-02-08 14:10:55,046 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:10:55,047 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:10:55,358 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L169 is not an error location. [2025-02-08 14:10:55,360 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L169 is not an error location. [2025-02-08 14:10:55,361 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:10:55,361 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:10:55,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:10:55 BoogieIcfgContainer [2025-02-08 14:10:55,362 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:10:55,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:10:55,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:10:55,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:10:55,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:10:54" (1/3) ... [2025-02-08 14:10:55,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c187087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:10:55, skipping insertion in model container [2025-02-08 14:10:55,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:54" (2/3) ... [2025-02-08 14:10:55,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c187087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:10:55, skipping insertion in model container [2025-02-08 14:10:55,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:10:55" (3/3) ... [2025-02-08 14:10:55,368 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2025-02-08 14:10:55,379 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:10:55,380 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-buffer-mult-alt2.wvr.c that has 5 procedures, 71 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-02-08 14:10:55,380 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:10:55,472 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 14:10:55,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 74 transitions, 176 flow [2025-02-08 14:10:55,554 INFO L124 PetriNetUnfolderBase]: 4/70 cut-off events. [2025-02-08 14:10:55,556 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:10:55,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 70 events. 4/70 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 217 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2025-02-08 14:10:55,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 74 transitions, 176 flow [2025-02-08 14:10:55,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 157 flow [2025-02-08 14:10:55,571 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:10:55,579 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;@63fd2348, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:10:55,579 INFO L334 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2025-02-08 14:10:55,582 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:10:55,582 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:10:55,582 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:10:55,582 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:55,583 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:10:55,583 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 14:10:55,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:55,586 INFO L85 PathProgramCache]: Analyzing trace with hash 920128, now seen corresponding path program 1 times [2025-02-08 14:10:55,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:55,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343383024] [2025-02-08 14:10:55,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:55,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:55,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:10:55,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:10:55,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:55,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:55,761 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 14:10:55,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:55,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343383024] [2025-02-08 14:10:55,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343383024] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:10:55,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:10:55,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:10:55,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305359743] [2025-02-08 14:10:55,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:10:55,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:10:55,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:55,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:10:55,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:10:55,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 74 [2025-02-08 14:10:55,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:55,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:55,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 74 [2025-02-08 14:10:55,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:59,735 INFO L124 PetriNetUnfolderBase]: 31078/41955 cut-off events. [2025-02-08 14:10:59,735 INFO L125 PetriNetUnfolderBase]: For 997/997 co-relation queries the response was YES. [2025-02-08 14:10:59,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84704 conditions, 41955 events. 31078/41955 cut-off events. For 997/997 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 283930 event pairs, 28674 based on Foata normal form. 2/22724 useless extension candidates. Maximal degree in co-relation 79324. Up to 40938 conditions per place. [2025-02-08 14:10:59,967 INFO L140 encePairwiseOnDemand]: 60/74 looper letters, 44 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2025-02-08 14:10:59,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 60 transitions, 241 flow [2025-02-08 14:10:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:10:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:10:59,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2025-02-08 14:10:59,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38513513513513514 [2025-02-08 14:10:59,977 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 157 flow. Second operand 4 states and 114 transitions. [2025-02-08 14:10:59,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 60 transitions, 241 flow [2025-02-08 14:11:00,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 60 transitions, 228 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-08 14:11:00,249 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 140 flow [2025-02-08 14:11:00,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2025-02-08 14:11:00,253 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -12 predicate places. [2025-02-08 14:11:00,253 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 140 flow [2025-02-08 14:11:00,254 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 14:11:00,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:00,254 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-08 14:11:00,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:11:00,254 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 14:11:00,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:00,255 INFO L85 PathProgramCache]: Analyzing trace with hash 28524853, now seen corresponding path program 1 times [2025-02-08 14:11:00,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:00,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461662507] [2025-02-08 14:11:00,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:00,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:00,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 14:11:00,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 14:11:00,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:00,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:00,315 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 14:11:00,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:00,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461662507] [2025-02-08 14:11:00,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461662507] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:00,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:00,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:00,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941283362] [2025-02-08 14:11:00,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:00,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:00,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:00,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:00,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:00,326 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 74 [2025-02-08 14:11:00,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 140 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 14:11:00,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:00,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 74 [2025-02-08 14:11:00,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:03,924 INFO L124 PetriNetUnfolderBase]: 31080/41963 cut-off events. [2025-02-08 14:11:03,925 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2025-02-08 14:11:03,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84007 conditions, 41963 events. 31080/41963 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 283951 event pairs, 28674 based on Foata normal form. 2/22734 useless extension candidates. Maximal degree in co-relation 83959. Up to 40947 conditions per place. [2025-02-08 14:11:04,263 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 49 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2025-02-08 14:11:04,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 66 transitions, 274 flow [2025-02-08 14:11:04,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2025-02-08 14:11:04,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38513513513513514 [2025-02-08 14:11:04,268 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 140 flow. Second operand 4 states and 114 transitions. [2025-02-08 14:11:04,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 66 transitions, 274 flow [2025-02-08 14:11:04,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 252 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:11:04,271 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 184 flow [2025-02-08 14:11:04,271 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2025-02-08 14:11:04,271 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -9 predicate places. [2025-02-08 14:11:04,271 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 184 flow [2025-02-08 14:11:04,272 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 14:11:04,272 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:04,272 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:11:04,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:11:04,272 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 14:11:04,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:04,277 INFO L85 PathProgramCache]: Analyzing trace with hash -618720289, now seen corresponding path program 1 times [2025-02-08 14:11:04,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:04,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029118289] [2025-02-08 14:11:04,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:04,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:04,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:04,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:04,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:04,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:04,363 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 14:11:04,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:04,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029118289] [2025-02-08 14:11:04,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029118289] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:04,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382666873] [2025-02-08 14:11:04,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:04,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:04,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:04,365 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 14:11:04,370 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 14:11:04,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:04,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:04,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:04,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:04,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:04,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:04,469 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 14:11:04,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:04,504 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 14:11:04,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382666873] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:04,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:04,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-02-08 14:11:04,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830137228] [2025-02-08 14:11:04,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:04,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:11:04,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:04,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:11:04,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:11:04,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 74 [2025-02-08 14:11:04,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 184 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 14:11:04,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:04,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 74 [2025-02-08 14:11:04,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:07,946 INFO L124 PetriNetUnfolderBase]: 31086/41987 cut-off events. [2025-02-08 14:11:07,946 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2025-02-08 14:11:08,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84083 conditions, 41987 events. 31086/41987 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 284410 event pairs, 28674 based on Foata normal form. 0/22752 useless extension candidates. Maximal degree in co-relation 83970. Up to 40950 conditions per place. [2025-02-08 14:11:08,197 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 49 selfloop transitions, 25 changer transitions 0/84 dead transitions. [2025-02-08 14:11:08,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 84 transitions, 410 flow [2025-02-08 14:11:08,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:11:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:11:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2025-02-08 14:11:08,199 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2972972972972973 [2025-02-08 14:11:08,199 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 184 flow. Second operand 10 states and 220 transitions. [2025-02-08 14:11:08,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 84 transitions, 410 flow [2025-02-08 14:11:08,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:11:08,202 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 346 flow [2025-02-08 14:11:08,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=346, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2025-02-08 14:11:08,202 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2025-02-08 14:11:08,202 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 346 flow [2025-02-08 14:11:08,203 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 14:11:08,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:08,203 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:08,210 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 14:11:08,403 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 14:11:08,404 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:11:08,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:08,405 INFO L85 PathProgramCache]: Analyzing trace with hash -638172036, now seen corresponding path program 1 times [2025-02-08 14:11:08,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:08,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897981410] [2025-02-08 14:11:08,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:08,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:08,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:11:08,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:11:08,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:08,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:08,610 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 14:11:08,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:08,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897981410] [2025-02-08 14:11:08,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897981410] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:08,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:08,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:08,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506395107] [2025-02-08 14:11:08,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:08,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:08,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:08,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:08,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:08,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 74 [2025-02-08 14:11:08,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 346 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 14:11:08,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:08,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 74 [2025-02-08 14:11:08,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:12,097 INFO L124 PetriNetUnfolderBase]: 35666/48512 cut-off events. [2025-02-08 14:11:12,097 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2025-02-08 14:11:12,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97242 conditions, 48512 events. 35666/48512 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 2951. Compared 329834 event pairs, 33058 based on Foata normal form. 1044/29120 useless extension candidates. Maximal degree in co-relation 97148. Up to 40965 conditions per place. [2025-02-08 14:11:12,377 INFO L140 encePairwiseOnDemand]: 59/74 looper letters, 105 selfloop transitions, 13 changer transitions 0/130 dead transitions. [2025-02-08 14:11:12,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 130 transitions, 754 flow [2025-02-08 14:11:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:11:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:11:12,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2025-02-08 14:11:12,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2025-02-08 14:11:12,380 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 346 flow. Second operand 5 states and 186 transitions. [2025-02-08 14:11:12,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 130 transitions, 754 flow [2025-02-08 14:11:12,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 130 transitions, 660 flow, removed 29 selfloop flow, removed 4 redundant places. [2025-02-08 14:11:12,385 INFO L231 Difference]: Finished difference. Result has 82 places, 94 transitions, 418 flow [2025-02-08 14:11:12,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=418, PETRI_PLACES=82, PETRI_TRANSITIONS=94} [2025-02-08 14:11:12,386 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 5 predicate places. [2025-02-08 14:11:12,386 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 94 transitions, 418 flow [2025-02-08 14:11:12,386 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 14:11:12,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:12,386 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:12,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:11:12,387 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:11:12,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:12,388 INFO L85 PathProgramCache]: Analyzing trace with hash 84572109, now seen corresponding path program 1 times [2025-02-08 14:11:12,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:12,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000069995] [2025-02-08 14:11:12,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:12,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:12,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:12,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:12,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:12,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:12,430 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 14:11:12,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:12,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000069995] [2025-02-08 14:11:12,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000069995] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:12,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:12,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:12,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815497735] [2025-02-08 14:11:12,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:12,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:12,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:12,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:12,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:12,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 74 [2025-02-08 14:11:12,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 94 transitions, 418 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 14:11:12,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:12,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 74 [2025-02-08 14:11:12,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:16,274 INFO L124 PetriNetUnfolderBase]: 31725/43163 cut-off events. [2025-02-08 14:11:16,275 INFO L125 PetriNetUnfolderBase]: For 2509/2509 co-relation queries the response was YES. [2025-02-08 14:11:16,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96601 conditions, 43163 events. 31725/43163 cut-off events. For 2509/2509 co-relation queries the response was YES. Maximal size of possible extension queue 2585. Compared 292934 event pairs, 29263 based on Foata normal form. 0/24987 useless extension candidates. Maximal degree in co-relation 96506. Up to 42069 conditions per place. [2025-02-08 14:11:16,490 INFO L140 encePairwiseOnDemand]: 72/74 looper letters, 75 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2025-02-08 14:11:16,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 93 transitions, 578 flow [2025-02-08 14:11:16,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2025-02-08 14:11:16,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2025-02-08 14:11:16,491 INFO L175 Difference]: Start difference. First operand has 82 places, 94 transitions, 418 flow. Second operand 3 states and 102 transitions. [2025-02-08 14:11:16,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 93 transitions, 578 flow [2025-02-08 14:11:16,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 93 transitions, 574 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:16,502 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 424 flow [2025-02-08 14:11:16,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2025-02-08 14:11:16,504 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 5 predicate places. [2025-02-08 14:11:16,504 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 424 flow [2025-02-08 14:11:16,504 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 14:11:16,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:16,504 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:16,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:11:16,504 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:11:16,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:16,506 INFO L85 PathProgramCache]: Analyzing trace with hash 84572111, now seen corresponding path program 1 times [2025-02-08 14:11:16,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:16,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797132353] [2025-02-08 14:11:16,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:16,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:16,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:16,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:16,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:16,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:16,647 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 14:11:16,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:16,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797132353] [2025-02-08 14:11:16,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797132353] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:16,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:16,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:16,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515451239] [2025-02-08 14:11:16,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:16,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:16,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:16,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:16,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:16,649 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 74 [2025-02-08 14:11:16,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 424 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 14:11:16,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:16,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 74 [2025-02-08 14:11:16,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand