./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-subst.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/chl-nzb-file-subst.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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:08:43,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:08:43,728 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:08:43,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:08:43,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:08:43,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:08:43,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:08:43,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:08:43,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:08:43,757 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:08:43,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:08:43,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:08:43,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:08:43,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:08:43,759 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:08:43,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:08:43,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:08:43,759 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:08:43,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:08:43,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:08:43,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:08:43,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:08:43,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:08:43,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:08:43,760 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:08:43,760 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:08:43,760 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:08:43,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:08:43,760 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:08:43,760 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:08:43,760 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:08:43,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:08:43,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:08:43,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:08:43,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:08:43,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:08:43,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:08:43,761 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:08:43,761 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:08:43,761 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:08:43,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:08:43,761 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:08:43,761 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:08:43,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:08:43,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:08:43,762 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 -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2025-02-08 14:08:43,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:08:44,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:08:44,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:08:44,011 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:08:44,011 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:08:44,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2025-02-08 14:08:45,174 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d0730455d/f9335179fbfb40f9ab056a3cec3d10e1/FLAG304fcb226 [2025-02-08 14:08:45,450 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:08:45,450 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2025-02-08 14:08:45,460 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d0730455d/f9335179fbfb40f9ab056a3cec3d10e1/FLAG304fcb226 [2025-02-08 14:08:45,482 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d0730455d/f9335179fbfb40f9ab056a3cec3d10e1 [2025-02-08 14:08:45,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:08:45,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:08:45,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:08:45,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:08:45,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:08:45,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5207a446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45, skipping insertion in model container [2025-02-08 14:08:45,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:08:45,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:08:45,681 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:08:45,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:08:45,742 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:08:45,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45 WrapperNode [2025-02-08 14:08:45,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:08:45,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:08:45,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:08:45,743 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:08:45,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,757 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,794 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 725 [2025-02-08 14:08:45,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:08:45,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:08:45,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:08:45,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:08:45,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,811 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,826 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-02-08 14:08:45,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,827 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,836 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:08:45,843 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:08:45,843 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:08:45,843 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:08:45,844 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (1/1) ... [2025-02-08 14:08:45,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:08:45,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:08:45,866 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 14:08:45,869 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 14:08:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:08:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:08:45,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:08:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:08:45,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:08:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:08:45,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:08:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:08:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:08:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:08:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:08:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:08:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:08:45,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:08:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:08:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:08:45,888 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 14:08:46,012 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:08:46,014 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:08:46,332 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-5: #t~ite23#1 := #t~ret22#1; [2025-02-08 14:08:46,332 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-6: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret22#1 && #t~ret22#1 <= 2147483647; [2025-02-08 14:08:46,332 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-7: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:46,332 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-8: havoc minus_#t~short103#1, minus_#t~short104#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:46,333 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-9: #t~ret22#1 := minus_#res#1; [2025-02-08 14:08:46,333 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L65-3: #t~ite21#1 := #t~ret20#1; [2025-02-08 14:08:46,333 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L65-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret20#1 && #t~ret20#1 <= 2147483647; [2025-02-08 14:08:46,333 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L65-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:46,333 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L65-6: havoc minus_#t~short103#1, minus_#t~short104#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:46,333 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L65-7: #t~ret20#1 := minus_#res#1; [2025-02-08 14:08:46,538 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-3: #t~ite45#1 := #t~ret44#1; [2025-02-08 14:08:46,538 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret44#1 && #t~ret44#1 <= 2147483647; [2025-02-08 14:08:46,538 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:46,538 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-6: havoc minus_#t~short103#1, minus_#t~short104#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:46,538 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L92-7: #t~ret44#1 := minus_#res#1; [2025-02-08 14:08:46,538 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-5: #t~ite47#1 := #t~ret46#1; [2025-02-08 14:08:46,538 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-6: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret46#1 && #t~ret46#1 <= 2147483647; [2025-02-08 14:08:46,538 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-7: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:46,538 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-8: havoc minus_#t~short103#1, minus_#t~short104#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:46,539 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L96-9: #t~ret46#1 := minus_#res#1; [2025-02-08 14:08:46,691 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L119-3: #t~ite69#1 := #t~ret68#1; [2025-02-08 14:08:46,691 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L119-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret68#1 && #t~ret68#1 <= 2147483647; [2025-02-08 14:08:46,692 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L119-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:46,692 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L119-6: havoc minus_#t~short103#1, minus_#t~short104#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:46,692 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L119-7: #t~ret68#1 := minus_#res#1; [2025-02-08 14:08:46,692 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L123-5: #t~ite71#1 := #t~ret70#1; [2025-02-08 14:08:46,692 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L123-6: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret70#1 && #t~ret70#1 <= 2147483647; [2025-02-08 14:08:46,692 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L123-7: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 14:08:46,692 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L123-8: havoc minus_#t~short103#1, minus_#t~short104#1, minus_~a#1, minus_~b#1; [2025-02-08 14:08:46,692 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L123-9: #t~ret70#1 := minus_#res#1; [2025-02-08 14:08:46,830 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:08:46,830 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:08:47,346 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:08:47,346 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:08:47,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:08:47 BoogieIcfgContainer [2025-02-08 14:08:47,347 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:08:47,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:08:47,348 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:08:47,351 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:08:47,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:08:45" (1/3) ... [2025-02-08 14:08:47,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233ee20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:08:47, skipping insertion in model container [2025-02-08 14:08:47,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:08:45" (2/3) ... [2025-02-08 14:08:47,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233ee20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:08:47, skipping insertion in model container [2025-02-08 14:08:47,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:08:47" (3/3) ... [2025-02-08 14:08:47,353 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2025-02-08 14:08:47,363 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:08:47,364 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-nzb-file-subst.wvr.c that has 4 procedures, 210 locations, 1 initial locations, 6 loop locations, and 60 error locations. [2025-02-08 14:08:47,365 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:08:47,502 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:08:47,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 242 transitions, 505 flow [2025-02-08 14:08:47,660 INFO L124 PetriNetUnfolderBase]: 33/239 cut-off events. [2025-02-08 14:08:47,662 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 14:08:47,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 239 events. 33/239 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1396 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 219. Up to 2 conditions per place. [2025-02-08 14:08:47,668 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 242 transitions, 505 flow [2025-02-08 14:08:47,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 237 transitions, 489 flow [2025-02-08 14:08:47,679 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:08:47,689 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;@20aa882c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:08:47,689 INFO L334 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2025-02-08 14:08:47,694 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:08:47,695 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:08:47,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:08:47,696 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:08:47,696 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:08:47,696 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2025-02-08 14:08:47,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:08:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1968367, now seen corresponding path program 1 times [2025-02-08 14:08:47,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:08:47,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734594001] [2025-02-08 14:08:47,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:08:47,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:08:47,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:08:47,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:08:47,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:08:47,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:08:47,953 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 14:08:47,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:08:47,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734594001] [2025-02-08 14:08:47,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734594001] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:08:47,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:08:47,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:08:47,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499916598] [2025-02-08 14:08:47,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:08:47,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:08:47,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:08:47,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:08:47,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:08:47,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 242 [2025-02-08 14:08:47,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 237 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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 14:08:47,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:08:47,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 242 [2025-02-08 14:08:47,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:08:59,923 INFO L124 PetriNetUnfolderBase]: 120503/219819 cut-off events. [2025-02-08 14:08:59,924 INFO L125 PetriNetUnfolderBase]: For 2477/2477 co-relation queries the response was YES. [2025-02-08 14:09:00,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378016 conditions, 219819 events. 120503/219819 cut-off events. For 2477/2477 co-relation queries the response was YES. Maximal size of possible extension queue 10233. Compared 2578596 event pairs, 83066 based on Foata normal form. 3/176876 useless extension candidates. Maximal degree in co-relation 372076. Up to 156243 conditions per place. [2025-02-08 14:09:01,125 INFO L140 encePairwiseOnDemand]: 223/242 looper letters, 116 selfloop transitions, 10 changer transitions 0/243 dead transitions. [2025-02-08 14:09:01,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 243 transitions, 753 flow [2025-02-08 14:09:01,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:09:01,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:09:01,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 615 transitions. [2025-02-08 14:09:01,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6353305785123967 [2025-02-08 14:09:01,301 INFO L175 Difference]: Start difference. First operand has 214 places, 237 transitions, 489 flow. Second operand 4 states and 615 transitions. [2025-02-08 14:09:01,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 243 transitions, 753 flow [2025-02-08 14:09:01,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 243 transitions, 744 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:09:01,388 INFO L231 Difference]: Finished difference. Result has 215 places, 243 transitions, 562 flow [2025-02-08 14:09:01,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=562, PETRI_PLACES=215, PETRI_TRANSITIONS=243} [2025-02-08 14:09:01,395 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 1 predicate places. [2025-02-08 14:09:01,396 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 243 transitions, 562 flow [2025-02-08 14:09:01,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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 14:09:01,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:01,397 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:09:01,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:09:01,397 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2025-02-08 14:09:01,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:01,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1488059151, now seen corresponding path program 1 times [2025-02-08 14:09:01,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:01,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680724961] [2025-02-08 14:09:01,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:01,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:09:01,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:09:01,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:01,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:01,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:01,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680724961] [2025-02-08 14:09:01,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680724961] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:09:01,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666707259] [2025-02-08 14:09:01,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:01,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:01,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:01,575 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 14:09:01,576 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 14:09:01,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:09:01,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:09:01,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:01,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:01,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:09:01,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:09:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:01,724 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:09:01,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666707259] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:01,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:09:01,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:09:01,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150604385] [2025-02-08 14:09:01,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:01,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:09:01,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:01,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:09:01,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:09:01,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 242 [2025-02-08 14:09:01,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 243 transitions, 562 flow. Second operand has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 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 14:09:01,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:01,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 242 [2025-02-08 14:09:01,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:13,584 INFO L124 PetriNetUnfolderBase]: 120503/219816 cut-off events. [2025-02-08 14:09:13,584 INFO L125 PetriNetUnfolderBase]: For 615/615 co-relation queries the response was YES. [2025-02-08 14:09:14,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377370 conditions, 219816 events. 120503/219816 cut-off events. For 615/615 co-relation queries the response was YES. Maximal size of possible extension queue 10239. Compared 2579360 event pairs, 83066 based on Foata normal form. 3/176878 useless extension candidates. Maximal degree in co-relation 377297. Up to 156228 conditions per place. [2025-02-08 14:09:15,037 INFO L140 encePairwiseOnDemand]: 229/242 looper letters, 106 selfloop transitions, 17 changer transitions 0/240 dead transitions. [2025-02-08 14:09:15,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 240 transitions, 796 flow [2025-02-08 14:09:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:09:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:09:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 846 transitions. [2025-02-08 14:09:15,040 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5826446280991735 [2025-02-08 14:09:15,041 INFO L175 Difference]: Start difference. First operand has 215 places, 243 transitions, 562 flow. Second operand 6 states and 846 transitions. [2025-02-08 14:09:15,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 240 transitions, 796 flow [2025-02-08 14:09:15,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 240 transitions, 796 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:09:15,044 INFO L231 Difference]: Finished difference. Result has 217 places, 240 transitions, 584 flow [2025-02-08 14:09:15,044 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=584, PETRI_PLACES=217, PETRI_TRANSITIONS=240} [2025-02-08 14:09:15,045 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 3 predicate places. [2025-02-08 14:09:15,045 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 240 transitions, 584 flow [2025-02-08 14:09:15,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 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 14:09:15,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:15,046 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:09:15,053 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 14:09:15,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:15,250 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2025-02-08 14:09:15,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:15,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1114808453, now seen corresponding path program 1 times [2025-02-08 14:09:15,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:15,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033595571] [2025-02-08 14:09:15,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:15,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:09:15,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:09:15,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:15,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:15,346 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 14:09:15,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:15,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033595571] [2025-02-08 14:09:15,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033595571] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:09:15,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750185077] [2025-02-08 14:09:15,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:15,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:15,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:15,349 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:09:15,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:09:15,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:09:15,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:09:15,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:15,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:15,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:09:15,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:09:15,456 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 14:09:15,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:09:15,485 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 14:09:15,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750185077] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:09:15,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:09:15,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:09:15,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712476686] [2025-02-08 14:09:15,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:09:15,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:09:15,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:15,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:09:15,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:09:15,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 242 [2025-02-08 14:09:15,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 240 transitions, 584 flow. Second operand has 12 states, 12 states have (on average 121.08333333333333) internal successors, (1453), 12 states have internal predecessors, (1453), 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 14:09:15,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:15,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 242 [2025-02-08 14:09:15,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand