./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:36:34,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:36:34,904 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:36:34,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:36:34,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:36:34,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:36:34,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:36:34,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:36:34,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:36:34,939 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:36:34,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:36:34,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:36:34,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:36:34,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:36:34,941 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:36:34,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:36:34,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:36:34,941 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:36:34,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:36:34,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:36:34,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:36:34,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:36:34,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:36:34,942 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:36:34,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:36:34,942 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:36:34,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:36:34,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:36:34,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:36:34,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:36:34,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:36:34,943 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:36:34,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:36:34,944 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/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 -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2025-03-09 06:36:35,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:36:35,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:36:35,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:36:35,250 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:36:35,250 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:36:35,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2025-03-09 06:36:36,464 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f7c2135/73395b082a7843f1b56b40d514d6d1d3/FLAG33616714a [2025-03-09 06:36:36,775 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:36:36,778 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2025-03-09 06:36:36,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f7c2135/73395b082a7843f1b56b40d514d6d1d3/FLAG33616714a [2025-03-09 06:36:37,024 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f7c2135/73395b082a7843f1b56b40d514d6d1d3 [2025-03-09 06:36:37,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:36:37,026 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:36:37,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:36:37,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:36:37,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:36:37,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fd9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37, skipping insertion in model container [2025-03-09 06:36:37,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,061 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:36:37,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:36:37,450 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:36:37,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:36:37,541 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:36:37,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37 WrapperNode [2025-03-09 06:36:37,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:36:37,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:36:37,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:36:37,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:36:37,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,587 INFO L138 Inliner]: procedures = 279, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 218 [2025-03-09 06:36:37,588 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:36:37,589 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:36:37,589 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:36:37,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:36:37,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,603 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,626 INFO L175 MemorySlicer]: Split 35 memory accesses to 7 slices as follows [2, 5, 5, 5, 2, 2, 14]. 40 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0, 0, 0]. The 10 writes are split as follows [0, 0, 0, 0, 1, 1, 8]. [2025-03-09 06:36:37,627 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,636 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,637 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:36:37,645 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:36:37,645 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:36:37,645 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:36:37,646 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (1/1) ... [2025-03-09 06:36:37,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:36:37,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:36:37,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:36:37,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:36:37,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-03-09 06:36:37,700 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-03-09 06:36:37,700 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-09 06:36:37,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-09 06:36:37,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:36:37,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:36:37,702 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:36:37,891 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:36:37,893 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:36:38,152 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1044: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2025-03-09 06:36:38,152 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1044-1: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2025-03-09 06:36:38,153 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1045: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2025-03-09 06:36:38,153 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1045-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2025-03-09 06:36:38,154 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:36:38,154 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:36:38,336 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:36:38,336 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:36:38,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:36:38 BoogieIcfgContainer [2025-03-09 06:36:38,337 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:36:38,339 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:36:38,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:36:38,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:36:38,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:36:37" (1/3) ... [2025-03-09 06:36:38,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315dd3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:36:38, skipping insertion in model container [2025-03-09 06:36:38,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:36:37" (2/3) ... [2025-03-09 06:36:38,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315dd3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:36:38, skipping insertion in model container [2025-03-09 06:36:38,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:36:38" (3/3) ... [2025-03-09 06:36:38,347 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2025-03-09 06:36:38,357 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:36:38,359 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_82-list_racefree.i that has 3 procedures, 75 locations, 1 initial locations, 9 loop locations, and 12 error locations. [2025-03-09 06:36:38,360 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:36:38,427 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-09 06:36:38,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 93 transitions, 206 flow [2025-03-09 06:36:38,514 INFO L124 PetriNetUnfolderBase]: 34/195 cut-off events. [2025-03-09 06:36:38,517 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-09 06:36:38,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 195 events. 34/195 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 813 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 98. Up to 8 conditions per place. [2025-03-09 06:36:38,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 93 transitions, 206 flow [2025-03-09 06:36:38,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 93 transitions, 206 flow [2025-03-09 06:36:38,531 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:36:38,540 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;@1342dd0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:36:38,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-03-09 06:36:38,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:36:38,547 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-03-09 06:36:38,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:36:38,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:36:38,548 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:36:38,548 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-09 06:36:38,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:36:38,554 INFO L85 PathProgramCache]: Analyzing trace with hash 518741191, now seen corresponding path program 1 times [2025-03-09 06:36:38,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:36:38,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464812496] [2025-03-09 06:36:38,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:36:38,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:36:38,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:36:38,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:36:38,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:36:38,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:36:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:36:38,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:36:38,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464812496] [2025-03-09 06:36:38,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464812496] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:36:38,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:36:38,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:36:38,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587372967] [2025-03-09 06:36:38,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:36:38,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:36:38,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:36:38,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:36:38,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:36:38,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 93 [2025-03-09 06:36:38,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 93 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2025-03-09 06:36:38,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:36:38,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 93 [2025-03-09 06:36:38,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:36:39,548 INFO L124 PetriNetUnfolderBase]: 2386/4768 cut-off events. [2025-03-09 06:36:39,549 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2025-03-09 06:36:39,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8645 conditions, 4768 events. 2386/4768 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 30906 event pairs, 1176 based on Foata normal form. 281/4254 useless extension candidates. Maximal degree in co-relation 7638. Up to 3775 conditions per place. [2025-03-09 06:36:39,584 INFO L140 encePairwiseOnDemand]: 76/93 looper letters, 58 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2025-03-09 06:36:39,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 91 transitions, 324 flow [2025-03-09 06:36:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:36:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:36:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2025-03-09 06:36:39,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5241935483870968 [2025-03-09 06:36:39,596 INFO L175 Difference]: Start difference. First operand has 81 places, 93 transitions, 206 flow. Second operand 4 states and 195 transitions. [2025-03-09 06:36:39,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 91 transitions, 324 flow [2025-03-09 06:36:39,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:36:39,605 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 190 flow [2025-03-09 06:36:39,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2025-03-09 06:36:39,610 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2025-03-09 06:36:39,611 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 190 flow [2025-03-09 06:36:39,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2025-03-09 06:36:39,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:36:39,611 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:36:39,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:36:39,612 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-03-09 06:36:39,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:36:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash 526978915, now seen corresponding path program 1 times [2025-03-09 06:36:39,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:36:39,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231166109] [2025-03-09 06:36:39,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:36:39,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:36:39,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:36:39,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:36:39,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:36:39,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:36:39,658 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:36:39,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:36:39,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:36:39,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:36:39,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:36:39,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:36:39,692 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-09 06:36:39,696 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2025-03-09 06:36:39,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2025-03-09 06:36:39,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-03-09 06:36:39,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-03-09 06:36:39,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2025-03-09 06:36:39,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2025-03-09 06:36:39,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-03-09 06:36:39,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-03-09 06:36:39,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-03-09 06:36:39,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2025-03-09 06:36:39,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2025-03-09 06:36:39,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2025-03-09 06:36:39,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-03-09 06:36:39,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2025-03-09 06:36:39,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-03-09 06:36:39,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-03-09 06:36:39,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-03-09 06:36:39,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-03-09 06:36:39,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:36:39,700 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-09 06:36:39,701 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-09 06:36:39,701 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-09 06:36:39,775 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-03-09 06:36:39,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 155 transitions, 354 flow [2025-03-09 06:36:39,832 INFO L124 PetriNetUnfolderBase]: 135/671 cut-off events. [2025-03-09 06:36:39,832 INFO L125 PetriNetUnfolderBase]: For 72/81 co-relation queries the response was YES. [2025-03-09 06:36:39,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 671 events. 135/671 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4283 event pairs, 2 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 426. Up to 32 conditions per place. [2025-03-09 06:36:39,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 155 transitions, 354 flow [2025-03-09 06:36:39,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 155 transitions, 354 flow [2025-03-09 06:36:39,845 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:36:39,846 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;@1342dd0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:36:39,846 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-03-09 06:36:39,849 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:36:39,849 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-03-09 06:36:39,849 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:36:39,849 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:36:39,849 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:36:39,849 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:36:39,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:36:39,850 INFO L85 PathProgramCache]: Analyzing trace with hash 664804633, now seen corresponding path program 1 times [2025-03-09 06:36:39,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:36:39,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611951392] [2025-03-09 06:36:39,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:36:39,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:36:39,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:36:39,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:36:39,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:36:39,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:36:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:36:39,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:36:39,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611951392] [2025-03-09 06:36:39,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611951392] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:36:39,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:36:39,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:36:39,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979330997] [2025-03-09 06:36:39,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:36:39,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:36:39,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:36:39,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:36:39,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:36:39,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 155 [2025-03-09 06:36:39,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 155 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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) [2025-03-09 06:36:39,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:36:39,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 155 [2025-03-09 06:36:39,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand