./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.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-alt3.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 fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:10:53,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:10:54,033 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:10:54,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:10:54,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:10:54,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:10:54,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:10:54,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:10:54,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:10:54,094 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:10:54,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:10:54,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:10:54,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:10:54,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:10:54,095 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:10:54,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:10:54,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:10:54,095 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:10:54,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:10:54,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:10:54,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:10:54,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:10:54,096 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:10:54,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:10:54,096 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:10:54,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:10:54,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:10:54,097 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:10:54,097 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:10:54,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:10:54,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:10:54,097 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 -> fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 [2025-02-08 14:10:54,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:10:54,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:10:54,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:10:54,397 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:10:54,398 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:10:54,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c [2025-02-08 14:10:55,526 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb2393be8/290fd904826942de90e3e5455c202f23/FLAG96c35cd53 [2025-02-08 14:10:55,785 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:10:55,786 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c [2025-02-08 14:10:55,807 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb2393be8/290fd904826942de90e3e5455c202f23/FLAG96c35cd53 [2025-02-08 14:10:56,110 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bb2393be8/290fd904826942de90e3e5455c202f23 [2025-02-08 14:10:56,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:10:56,113 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:10:56,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:10:56,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:10:56,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:10:56,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47818d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56, skipping insertion in model container [2025-02-08 14:10:56,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,133 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:10:56,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:10:56,260 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:10:56,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:10:56,290 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:10:56,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56 WrapperNode [2025-02-08 14:10:56,291 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:10:56,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:10:56,292 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:10:56,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:10:56,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,320 INFO L138 Inliner]: procedures = 25, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 341 [2025-02-08 14:10:56,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:10:56,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:10:56,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:10:56,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:10:56,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,329 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,338 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 14:10:56,339 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,339 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,344 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:10:56,349 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:10:56,350 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:10:56,350 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:10:56,350 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:56,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:10:56,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:56,376 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 14:10:56,384 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 14:10:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:10:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:10:56,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:10:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:10:56,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:10:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:10:56,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:10:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 14:10:56,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 14:10:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:10:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:10:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:10:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:10:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:10:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:10:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:10:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:10:56,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:10:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:10:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:10:56,400 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 14:10:56,474 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:10:56,475 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:10:56,692 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L97: ~cond~2#1 := (if 0 == (if ~i~0 < ~N~0 || ~q1_front~0 < ~q1_back~0 then 1 else 0) then 0 else 1); [2025-02-08 14:10:56,692 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94: havoc #t~ret10#1; [2025-02-08 14:10:56,692 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94-1: havoc #t~mem9#1; [2025-02-08 14:10:56,692 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94-2: ~total~0 := #t~ret10#1; [2025-02-08 14:10:56,693 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret10#1 && #t~ret10#1 <= 2147483647; [2025-02-08 14:10:56,693 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:10:56,693 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94-5: havoc plus_#t~short37#1, plus_#t~short38#1, plus_~a#1, plus_~b#1; [2025-02-08 14:10:56,693 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L94-6: #t~ret10#1 := plus_#res#1; [2025-02-08 14:10:56,693 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L99: [2025-02-08 14:10:56,693 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95: havoc #t~post11#1; [2025-02-08 14:10:56,693 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95-1: assume 1 + #t~post11#1 <= 2147483647; [2025-02-08 14:10:56,693 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95-1: assume !(1 + #t~post11#1 <= 2147483647); [2025-02-08 14:10:56,693 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95-2: ~q1_front~0 := 1 + #t~post11#1; [2025-02-08 14:10:56,694 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95-3: assume 1 + #t~post11#1 >= -2147483648; [2025-02-08 14:10:56,694 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95-3: assume !(1 + #t~post11#1 >= -2147483648); [2025-02-08 14:10:56,694 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L95-4: #t~post11#1 := ~q1_front~0; [2025-02-08 14:10:56,694 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96: [2025-02-08 14:10:56,770 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L114: [2025-02-08 14:10:56,771 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L115: ~cond~3#1 := (if 0 == (if ~j~0 < ~M~0 || ~q2_front~0 < ~q2_back~0 then 1 else 0) then 0 else 1); [2025-02-08 14:10:56,771 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112: havoc #t~ret13#1; [2025-02-08 14:10:56,771 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112-1: havoc #t~mem12#1; [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112-2: ~total~0 := #t~ret13#1; [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret13#1 && #t~ret13#1 <= 2147483647; [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112-5: havoc plus_#t~short37#1, plus_#t~short38#1, plus_~a#1, plus_~b#1; [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L112-6: #t~ret13#1 := plus_#res#1; [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L117: [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113: havoc #t~post14#1; [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113-1: assume 1 + #t~post14#1 <= 2147483647; [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113-1: assume !(1 + #t~post14#1 <= 2147483647); [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113-2: ~q2_front~0 := 1 + #t~post14#1; [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113-3: assume 1 + #t~post14#1 >= -2147483648; [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113-3: assume !(1 + #t~post14#1 >= -2147483648); [2025-02-08 14:10:56,772 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L113-4: #t~post14#1 := ~q2_front~0; [2025-02-08 14:10:56,928 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:10:56,929 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:10:57,192 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L173 is not an error location. [2025-02-08 14:10:57,193 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L173 is not an error location. [2025-02-08 14:10:57,193 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:10:57,193 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:10:57,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:10:57 BoogieIcfgContainer [2025-02-08 14:10:57,194 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:10:57,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:10:57,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:10:57,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:10:57,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:10:56" (1/3) ... [2025-02-08 14:10:57,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c1ac8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:10:57, skipping insertion in model container [2025-02-08 14:10:57,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:56" (2/3) ... [2025-02-08 14:10:57,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c1ac8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:10:57, skipping insertion in model container [2025-02-08 14:10:57,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:10:57" (3/3) ... [2025-02-08 14:10:57,202 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt3.wvr.c [2025-02-08 14:10:57,216 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:10:57,217 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-buffer-mult-alt3.wvr.c that has 5 procedures, 73 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-02-08 14:10:57,217 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:10:57,362 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 14:10:57,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 76 transitions, 180 flow [2025-02-08 14:10:57,425 INFO L124 PetriNetUnfolderBase]: 4/72 cut-off events. [2025-02-08 14:10:57,427 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:10:57,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 72 events. 4/72 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 229 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2025-02-08 14:10:57,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 76 transitions, 180 flow [2025-02-08 14:10:57,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 161 flow [2025-02-08 14:10:57,441 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:10:57,452 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;@2a0f82d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:10:57,453 INFO L334 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2025-02-08 14:10:57,456 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:10:57,456 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:10:57,456 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:10:57,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:57,457 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:10:57,457 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 14:10:57,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:57,461 INFO L85 PathProgramCache]: Analyzing trace with hash 912850, now seen corresponding path program 1 times [2025-02-08 14:10:57,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:57,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425387278] [2025-02-08 14:10:57,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:57,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:57,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:10:57,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:10:57,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:57,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:57,665 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 14:10:57,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:57,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425387278] [2025-02-08 14:10:57,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425387278] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:10:57,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:10:57,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:10:57,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405477671] [2025-02-08 14:10:57,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:10:57,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:10:57,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:57,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:10:57,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:10:57,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 76 [2025-02-08 14:10:57,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:57,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:57,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 76 [2025-02-08 14:10:57,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:03,323 INFO L124 PetriNetUnfolderBase]: 48210/64571 cut-off events. [2025-02-08 14:11:03,324 INFO L125 PetriNetUnfolderBase]: For 1455/1455 co-relation queries the response was YES. [2025-02-08 14:11:03,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130620 conditions, 64571 events. 48210/64571 cut-off events. For 1455/1455 co-relation queries the response was YES. Maximal size of possible extension queue 4042. Compared 447616 event pairs, 45222 based on Foata normal form. 2/34008 useless extension candidates. Maximal degree in co-relation 124152. Up to 63458 conditions per place. [2025-02-08 14:11:03,633 INFO L140 encePairwiseOnDemand]: 64/76 looper letters, 48 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2025-02-08 14:11:03,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 64 transitions, 257 flow [2025-02-08 14:11:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2025-02-08 14:11:03,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3815789473684211 [2025-02-08 14:11:03,647 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 161 flow. Second operand 4 states and 116 transitions. [2025-02-08 14:11:03,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 64 transitions, 257 flow [2025-02-08 14:11:04,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 244 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-08 14:11:04,171 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 148 flow [2025-02-08 14:11:04,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2025-02-08 14:11:04,177 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -10 predicate places. [2025-02-08 14:11:04,178 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 148 flow [2025-02-08 14:11:04,178 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 14:11:04,178 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:04,178 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-08 14:11:04,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:11:04,179 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 14:11:04,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash 28299161, now seen corresponding path program 1 times [2025-02-08 14:11:04,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:04,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966260828] [2025-02-08 14:11:04,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:04,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:04,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 14:11:04,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 14:11:04,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:04,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:04,256 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 14:11:04,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:04,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966260828] [2025-02-08 14:11:04,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966260828] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:04,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:04,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:04,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837559484] [2025-02-08 14:11:04,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:04,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:04,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:04,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:04,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:04,266 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 76 [2025-02-08 14:11:04,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 148 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 14:11:04,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:04,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 76 [2025-02-08 14:11:04,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:09,015 INFO L124 PetriNetUnfolderBase]: 48212/64579 cut-off events. [2025-02-08 14:11:09,016 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2025-02-08 14:11:09,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129757 conditions, 64579 events. 48212/64579 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 4042. Compared 447366 event pairs, 45222 based on Foata normal form. 2/34018 useless extension candidates. Maximal degree in co-relation 129709. Up to 63467 conditions per place. [2025-02-08 14:11:09,355 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 53 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2025-02-08 14:11:09,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 70 transitions, 290 flow [2025-02-08 14:11:09,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2025-02-08 14:11:09,358 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3881578947368421 [2025-02-08 14:11:09,359 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 148 flow. Second operand 4 states and 118 transitions. [2025-02-08 14:11:09,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 70 transitions, 290 flow [2025-02-08 14:11:09,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:11:09,361 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 192 flow [2025-02-08 14:11:09,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2025-02-08 14:11:09,362 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, -7 predicate places. [2025-02-08 14:11:09,362 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 192 flow [2025-02-08 14:11:09,363 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 14:11:09,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:09,363 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:11:09,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:11:09,363 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 14:11:09,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1247636567, now seen corresponding path program 1 times [2025-02-08 14:11:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:09,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336056483] [2025-02-08 14:11:09,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:09,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:09,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:09,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:09,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:09,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:09,500 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 14:11:09,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:09,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336056483] [2025-02-08 14:11:09,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336056483] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:09,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361407695] [2025-02-08 14:11:09,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:09,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:09,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:09,505 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 14:11:09,511 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 14:11:09,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:09,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:09,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:09,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:09,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:09,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:09,625 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 14:11:09,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:09,665 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 14:11:09,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361407695] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:09,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:09,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-02-08 14:11:09,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544295376] [2025-02-08 14:11:09,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:09,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:11:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:09,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:11:09,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:11:09,684 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 76 [2025-02-08 14:11:09,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 192 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 14:11:09,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:09,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 76 [2025-02-08 14:11:09,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:14,825 INFO L124 PetriNetUnfolderBase]: 48218/64603 cut-off events. [2025-02-08 14:11:14,825 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2025-02-08 14:11:14,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129833 conditions, 64603 events. 48218/64603 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 4042. Compared 447880 event pairs, 45222 based on Foata normal form. 0/34036 useless extension candidates. Maximal degree in co-relation 129720. Up to 63470 conditions per place. [2025-02-08 14:11:15,177 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 53 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2025-02-08 14:11:15,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 426 flow [2025-02-08 14:11:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:11:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:11:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2025-02-08 14:11:15,179 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29473684210526313 [2025-02-08 14:11:15,180 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 192 flow. Second operand 10 states and 224 transitions. [2025-02-08 14:11:15,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 426 flow [2025-02-08 14:11:15,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 426 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:11:15,182 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 354 flow [2025-02-08 14:11:15,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2025-02-08 14:11:15,182 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2025-02-08 14:11:15,183 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 354 flow [2025-02-08 14:11:15,183 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 14:11:15,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:15,183 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:15,190 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 14:11:15,387 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 14:11:15,387 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:11:15,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash -48026159, now seen corresponding path program 1 times [2025-02-08 14:11:15,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:15,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29176124] [2025-02-08 14:11:15,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:15,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:15,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:11:15,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:11:15,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:15,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:15,476 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 14:11:15,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:15,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29176124] [2025-02-08 14:11:15,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29176124] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:15,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:15,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:11:15,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068261606] [2025-02-08 14:11:15,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:15,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:15,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:15,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:15,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:15,477 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2025-02-08 14:11:15,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:15,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:15,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2025-02-08 14:11:15,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:21,075 INFO L124 PetriNetUnfolderBase]: 60529/81794 cut-off events. [2025-02-08 14:11:21,075 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2025-02-08 14:11:21,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163747 conditions, 81794 events. 60529/81794 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 4611. Compared 584273 event pairs, 15330 based on Foata normal form. 0/46409 useless extension candidates. Maximal degree in co-relation 163681. Up to 58328 conditions per place. [2025-02-08 14:11:21,537 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 111 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2025-02-08 14:11:21,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 125 transitions, 661 flow [2025-02-08 14:11:21,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2025-02-08 14:11:21,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6359649122807017 [2025-02-08 14:11:21,539 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 354 flow. Second operand 3 states and 145 transitions. [2025-02-08 14:11:21,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 125 transitions, 661 flow [2025-02-08 14:11:21,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 597 flow, removed 18 selfloop flow, removed 4 redundant places. [2025-02-08 14:11:21,542 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 304 flow [2025-02-08 14:11:21,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2025-02-08 14:11:21,543 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 4 predicate places. [2025-02-08 14:11:21,543 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 304 flow [2025-02-08 14:11:21,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:21,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:21,543 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:21,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:11:21,543 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2025-02-08 14:11:21,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:21,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1488809958, now seen corresponding path program 1 times [2025-02-08 14:11:21,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:21,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479692753] [2025-02-08 14:11:21,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:21,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:21,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:11:21,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:11:21,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:21,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:21,597 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 14:11:21,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:21,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479692753] [2025-02-08 14:11:21,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479692753] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:21,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:21,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:11:21,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683914700] [2025-02-08 14:11:21,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:21,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:21,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:21,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:21,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:21,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2025-02-08 14:11:21,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 14:11:21,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:21,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2025-02-08 14:11:21,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand