./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i --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/goblint-regression/28-race_reach_94-alloc_region_racing.i -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 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:07:27,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:07:27,794 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:07:27,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:07:27,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:07:27,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:07:27,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:07:27,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:07:27,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:07:27,821 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:07:27,821 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:07:27,821 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:07:27,821 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:07:27,822 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:07:27,822 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:07:27,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:07:27,822 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:07:27,822 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:07:27,822 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:07:27,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:07:27,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:07:27,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:07:27,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:07:27,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:07:27,823 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:07:27,823 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:07:27,823 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:07:27,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:07:27,824 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:07:27,824 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:07:27,824 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:07:27,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:07:27,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:07:27,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:07:27,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:07:27,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:07:27,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:07:27,825 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:07:27,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:07:27,825 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:07:27,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:07:27,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:07:27,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:07:27,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:07:27,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:07:27,826 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 -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2025-02-08 14:07:28,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:07:28,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:07:28,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:07:28,112 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:07:28,112 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:07:28,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2025-02-08 14:07:29,447 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94bc7cbc8/cc583964aa814231846adfa382cde8e1/FLAGba958b715 [2025-02-08 14:07:29,879 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:07:29,880 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2025-02-08 14:07:29,902 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94bc7cbc8/cc583964aa814231846adfa382cde8e1/FLAGba958b715 [2025-02-08 14:07:29,920 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94bc7cbc8/cc583964aa814231846adfa382cde8e1 [2025-02-08 14:07:29,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:07:29,924 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:07:29,925 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:07:29,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:07:29,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:07:29,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:07:29" (1/1) ... [2025-02-08 14:07:29,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47abc21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:29, skipping insertion in model container [2025-02-08 14:07:29,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:07:29" (1/1) ... [2025-02-08 14:07:29,974 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:07:30,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:07:30,501 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:07:30,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:07:30,647 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:07:30,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30 WrapperNode [2025-02-08 14:07:30,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:07:30,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:07:30,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:07:30,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:07:30,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (1/1) ... [2025-02-08 14:07:30,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (1/1) ... [2025-02-08 14:07:30,715 INFO L138 Inliner]: procedures = 378, calls = 83, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 265 [2025-02-08 14:07:30,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:07:30,716 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:07:30,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:07:30,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:07:30,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (1/1) ... [2025-02-08 14:07:30,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (1/1) ... [2025-02-08 14:07:30,732 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (1/1) ... [2025-02-08 14:07:30,761 INFO L175 MemorySlicer]: Split 47 memory accesses to 7 slices as follows [2, 5, 5, 5, 20, 2, 8]. 43 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 5, 5, 5, 0, 0, 1]. The 16 writes are split as follows [0, 0, 0, 0, 12, 1, 3]. [2025-02-08 14:07:30,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (1/1) ... [2025-02-08 14:07:30,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (1/1) ... [2025-02-08 14:07:30,782 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (1/1) ... [2025-02-08 14:07:30,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (1/1) ... [2025-02-08 14:07:30,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (1/1) ... [2025-02-08 14:07:30,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (1/1) ... [2025-02-08 14:07:30,801 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:07:30,805 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:07:30,805 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:07:30,805 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:07:30,806 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (1/1) ... [2025-02-08 14:07:30,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:07:30,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:07:30,843 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 14:07:30,846 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 14:07:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 14:07:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 14:07:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 14:07:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 14:07:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-08 14:07:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-08 14:07:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-02-08 14:07:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-02-08 14:07:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 14:07:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 14:07:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 14:07:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 14:07:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-08 14:07:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-02-08 14:07:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-02-08 14:07:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-02-08 14:07:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 14:07:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:07:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:07:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 14:07:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 14:07:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 14:07:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 14:07:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-02-08 14:07:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:07:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:07:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 14:07:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 14:07:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 14:07:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 14:07:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-08 14:07:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 14:07:30,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:07:30,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:07:30,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 14:07:30,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 14:07:30,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 14:07:30,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-08 14:07:30,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-08 14:07:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-02-08 14:07:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-02-08 14:07:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-08 14:07:30,874 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-08 14:07:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:07:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:07:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 14:07:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 14:07:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 14:07:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 14:07:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-08 14:07:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:07:30,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:07:30,878 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 14:07:31,090 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:07:31,092 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:07:31,541 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1270: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-08 14:07:31,541 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1270-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-02-08 14:07:31,542 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:07:31,542 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:07:31,756 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:07:31,756 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:07:31,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:07:31 BoogieIcfgContainer [2025-02-08 14:07:31,757 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:07:31,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:07:31,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:07:31,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:07:31,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:07:29" (1/3) ... [2025-02-08 14:07:31,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2098a9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:07:31, skipping insertion in model container [2025-02-08 14:07:31,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:07:30" (2/3) ... [2025-02-08 14:07:31,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2098a9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:07:31, skipping insertion in model container [2025-02-08 14:07:31,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:07:31" (3/3) ... [2025-02-08 14:07:31,765 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2025-02-08 14:07:31,777 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:07:31,779 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_94-alloc_region_racing.i that has 2 procedures, 99 locations, 1 initial locations, 13 loop locations, and 12 error locations. [2025-02-08 14:07:31,779 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:07:31,832 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-08 14:07:31,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 124 transitions, 255 flow [2025-02-08 14:07:31,933 INFO L124 PetriNetUnfolderBase]: 38/183 cut-off events. [2025-02-08 14:07:31,936 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:07:31,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 183 events. 38/183 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 686 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 115. Up to 8 conditions per place. [2025-02-08 14:07:31,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 124 transitions, 255 flow [2025-02-08 14:07:31,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 123 transitions, 253 flow [2025-02-08 14:07:31,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:07:31,960 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;@df5a09d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:07:31,960 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-02-08 14:07:32,006 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:07:32,009 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-08 14:07:32,009 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:07:32,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:32,010 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:07:32,011 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-08 14:07:32,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:32,016 INFO L85 PathProgramCache]: Analyzing trace with hash 658559625, now seen corresponding path program 1 times [2025-02-08 14:07:32,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:32,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166365000] [2025-02-08 14:07:32,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:32,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:32,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:07:32,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:07:32,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:32,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:32,354 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 14:07:32,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:32,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166365000] [2025-02-08 14:07:32,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166365000] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:32,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:32,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:07:32,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457784137] [2025-02-08 14:07:32,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:32,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:32,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:32,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:32,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:32,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 124 [2025-02-08 14:07:32,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 123 transitions, 253 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) [2025-02-08 14:07:32,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:32,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 124 [2025-02-08 14:07:32,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:32,907 INFO L124 PetriNetUnfolderBase]: 676/1825 cut-off events. [2025-02-08 14:07:32,908 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:07:32,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3168 conditions, 1825 events. 676/1825 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12352 event pairs, 0 based on Foata normal form. 499/2152 useless extension candidates. Maximal degree in co-relation 3128. Up to 1271 conditions per place. [2025-02-08 14:07:32,925 INFO L140 encePairwiseOnDemand]: 97/124 looper letters, 95 selfloop transitions, 3 changer transitions 0/143 dead transitions. [2025-02-08 14:07:32,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 143 transitions, 489 flow [2025-02-08 14:07:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:07:32,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:07:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2025-02-08 14:07:32,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6491935483870968 [2025-02-08 14:07:32,939 INFO L175 Difference]: Start difference. First operand has 102 places, 123 transitions, 253 flow. Second operand 4 states and 322 transitions. [2025-02-08 14:07:32,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 143 transitions, 489 flow [2025-02-08 14:07:32,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 143 transitions, 489 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:07:32,951 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 217 flow [2025-02-08 14:07:32,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2025-02-08 14:07:32,956 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 2 predicate places. [2025-02-08 14:07:32,956 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 217 flow [2025-02-08 14:07:32,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2025-02-08 14:07:32,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:32,957 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:32,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:07:32,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-02-08 14:07:32,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:32,959 INFO L85 PathProgramCache]: Analyzing trace with hash -260285364, now seen corresponding path program 1 times [2025-02-08 14:07:32,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:32,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44439695] [2025-02-08 14:07:32,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:32,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:32,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:07:33,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:07:33,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:33,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:07:33,022 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:07:33,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:07:33,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:07:33,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:33,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:07:33,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:07:33,074 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:07:33,076 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-02-08 14:07:33,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-02-08 14:07:33,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-02-08 14:07:33,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-02-08 14:07:33,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-02-08 14:07:33,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-02-08 14:07:33,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-02-08 14:07:33,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-02-08 14:07:33,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2025-02-08 14:07:33,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2025-02-08 14:07:33,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2025-02-08 14:07:33,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-02-08 14:07:33,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-02-08 14:07:33,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-02-08 14:07:33,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-02-08 14:07:33,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-02-08 14:07:33,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-02-08 14:07:33,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:07:33,080 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 14:07:33,085 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:07:33,085 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 14:07:33,149 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:07:33,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 177 transitions, 370 flow [2025-02-08 14:07:33,187 INFO L124 PetriNetUnfolderBase]: 64/314 cut-off events. [2025-02-08 14:07:33,187 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 14:07:33,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 314 events. 64/314 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1465 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 191. Up to 12 conditions per place. [2025-02-08 14:07:33,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 177 transitions, 370 flow [2025-02-08 14:07:33,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 177 transitions, 370 flow [2025-02-08 14:07:33,195 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:07:33,196 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;@df5a09d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:07:33,197 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-08 14:07:33,199 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:07:33,200 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-08 14:07:33,200 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:07:33,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:33,200 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:07:33,200 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:07:33,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:33,201 INFO L85 PathProgramCache]: Analyzing trace with hash 827520621, now seen corresponding path program 1 times [2025-02-08 14:07:33,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027536626] [2025-02-08 14:07:33,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:33,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:33,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:07:33,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:07:33,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:33,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:33,289 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 14:07:33,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:33,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027536626] [2025-02-08 14:07:33,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027536626] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:33,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:33,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:07:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325765398] [2025-02-08 14:07:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:33,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:33,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:33,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:33,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:33,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 177 [2025-02-08 14:07:33,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 177 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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 14:07:33,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:33,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 177 [2025-02-08 14:07:33,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:39,235 INFO L124 PetriNetUnfolderBase]: 33288/72257 cut-off events. [2025-02-08 14:07:39,235 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2025-02-08 14:07:39,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121759 conditions, 72257 events. 33288/72257 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 1636. Compared 793376 event pairs, 22418 based on Foata normal form. 18641/83322 useless extension candidates. Maximal degree in co-relation 45791. Up to 49318 conditions per place. [2025-02-08 14:07:39,682 INFO L140 encePairwiseOnDemand]: 140/177 looper letters, 123 selfloop transitions, 3 changer transitions 0/191 dead transitions. [2025-02-08 14:07:39,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 191 transitions, 650 flow [2025-02-08 14:07:39,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:07:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:07:39,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2025-02-08 14:07:39,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6214689265536724 [2025-02-08 14:07:39,689 INFO L175 Difference]: Start difference. First operand has 145 places, 177 transitions, 370 flow. Second operand 4 states and 440 transitions. [2025-02-08 14:07:39,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 191 transitions, 650 flow [2025-02-08 14:07:39,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 191 transitions, 650 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:07:39,696 INFO L231 Difference]: Finished difference. Result has 150 places, 148 transitions, 332 flow [2025-02-08 14:07:39,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=150, PETRI_TRANSITIONS=148} [2025-02-08 14:07:39,698 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 5 predicate places. [2025-02-08 14:07:39,698 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 148 transitions, 332 flow [2025-02-08 14:07:39,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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 14:07:39,698 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:39,699 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:07:39,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:07:39,699 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:07:39,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2093323716, now seen corresponding path program 1 times [2025-02-08 14:07:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:39,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893465091] [2025-02-08 14:07:39,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:39,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:07:39,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:07:39,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:39,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:39,854 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 14:07:39,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:39,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893465091] [2025-02-08 14:07:39,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893465091] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:39,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:39,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:07:39,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804454361] [2025-02-08 14:07:39,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:39,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:07:39,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:39,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:07:39,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:07:39,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 177 [2025-02-08 14:07:39,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 148 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 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 14:07:39,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:39,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 177 [2025-02-08 14:07:39,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:44,529 INFO L124 PetriNetUnfolderBase]: 31722/63901 cut-off events. [2025-02-08 14:07:44,529 INFO L125 PetriNetUnfolderBase]: For 1986/1986 co-relation queries the response was YES. [2025-02-08 14:07:44,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113615 conditions, 63901 events. 31722/63901 cut-off events. For 1986/1986 co-relation queries the response was YES. Maximal size of possible extension queue 1493. Compared 660829 event pairs, 6364 based on Foata normal form. 484/58888 useless extension candidates. Maximal degree in co-relation 49185. Up to 40686 conditions per place. [2025-02-08 14:07:44,873 INFO L140 encePairwiseOnDemand]: 172/177 looper letters, 203 selfloop transitions, 6 changer transitions 0/274 dead transitions. [2025-02-08 14:07:44,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 274 transitions, 1000 flow [2025-02-08 14:07:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:07:44,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:07:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2025-02-08 14:07:44,879 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5649717514124294 [2025-02-08 14:07:44,879 INFO L175 Difference]: Start difference. First operand has 150 places, 148 transitions, 332 flow. Second operand 6 states and 600 transitions. [2025-02-08 14:07:44,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 274 transitions, 1000 flow [2025-02-08 14:07:44,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 274 transitions, 998 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:07:44,892 INFO L231 Difference]: Finished difference. Result has 153 places, 147 transitions, 338 flow [2025-02-08 14:07:44,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=153, PETRI_TRANSITIONS=147} [2025-02-08 14:07:44,895 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 8 predicate places. [2025-02-08 14:07:44,896 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 147 transitions, 338 flow [2025-02-08 14:07:44,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 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 14:07:44,896 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:44,897 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:07:44,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:07:44,897 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:07:44,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:44,901 INFO L85 PathProgramCache]: Analyzing trace with hash 468526466, now seen corresponding path program 1 times [2025-02-08 14:07:44,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:44,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474626268] [2025-02-08 14:07:44,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:44,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:44,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:07:44,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:07:44,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:44,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:45,002 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 14:07:45,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:45,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474626268] [2025-02-08 14:07:45,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474626268] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:45,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:45,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:07:45,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446751507] [2025-02-08 14:07:45,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:45,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:45,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:45,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:45,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:45,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 177 [2025-02-08 14:07:45,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 147 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 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 14:07:45,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:45,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 177 [2025-02-08 14:07:45,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:07:48,764 INFO L124 PetriNetUnfolderBase]: 30065/56843 cut-off events. [2025-02-08 14:07:48,764 INFO L125 PetriNetUnfolderBase]: For 3697/3697 co-relation queries the response was YES. [2025-02-08 14:07:48,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105310 conditions, 56843 events. 30065/56843 cut-off events. For 3697/3697 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 557320 event pairs, 994 based on Foata normal form. 484/53058 useless extension candidates. Maximal degree in co-relation 72117. Up to 41377 conditions per place. [2025-02-08 14:07:49,119 INFO L140 encePairwiseOnDemand]: 172/177 looper letters, 160 selfloop transitions, 6 changer transitions 0/231 dead transitions. [2025-02-08 14:07:49,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 231 transitions, 836 flow [2025-02-08 14:07:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:07:49,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:07:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 425 transitions. [2025-02-08 14:07:49,121 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6002824858757062 [2025-02-08 14:07:49,121 INFO L175 Difference]: Start difference. First operand has 153 places, 147 transitions, 338 flow. Second operand 4 states and 425 transitions. [2025-02-08 14:07:49,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 231 transitions, 836 flow [2025-02-08 14:07:49,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 231 transitions, 820 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-08 14:07:49,140 INFO L231 Difference]: Finished difference. Result has 151 places, 147 transitions, 338 flow [2025-02-08 14:07:49,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=151, PETRI_TRANSITIONS=147} [2025-02-08 14:07:49,141 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 6 predicate places. [2025-02-08 14:07:49,141 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 147 transitions, 338 flow [2025-02-08 14:07:49,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 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 14:07:49,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:49,142 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2025-02-08 14:07:49,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:07:49,142 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 14:07:49,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:49,143 INFO L85 PathProgramCache]: Analyzing trace with hash -717604363, now seen corresponding path program 1 times [2025-02-08 14:07:49,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:49,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398356262] [2025-02-08 14:07:49,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:49,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:49,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:07:49,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:07:49,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:49,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:07:49,181 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:07:49,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:07:49,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:07:49,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:49,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:07:49,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:07:49,214 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 14:07:49,215 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-02-08 14:07:49,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2025-02-08 14:07:49,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2025-02-08 14:07:49,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2025-02-08 14:07:49,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2025-02-08 14:07:49,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2025-02-08 14:07:49,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2025-02-08 14:07:49,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2025-02-08 14:07:49,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2025-02-08 14:07:49,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2025-02-08 14:07:49,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2025-02-08 14:07:49,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2025-02-08 14:07:49,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2025-02-08 14:07:49,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2025-02-08 14:07:49,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2025-02-08 14:07:49,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2025-02-08 14:07:49,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2025-02-08 14:07:49,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2025-02-08 14:07:49,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2025-02-08 14:07:49,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2025-02-08 14:07:49,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2025-02-08 14:07:49,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:07:49,217 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-08 14:07:49,218 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 14:07:49,218 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-08 14:07:49,281 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:07:49,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 230 transitions, 487 flow [2025-02-08 14:07:49,538 INFO L124 PetriNetUnfolderBase]: 93/464 cut-off events. [2025-02-08 14:07:49,539 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-02-08 14:07:49,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 464 events. 93/464 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2373 event pairs, 1 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 329. Up to 16 conditions per place. [2025-02-08 14:07:49,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 230 transitions, 487 flow [2025-02-08 14:07:49,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 230 transitions, 487 flow [2025-02-08 14:07:49,553 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:07:49,555 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;@df5a09d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:07:49,555 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-02-08 14:07:49,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:07:49,558 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-08 14:07:49,558 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:07:49,558 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:07:49,558 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 14:07:49,558 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-02-08 14:07:49,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:07:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1047059782, now seen corresponding path program 1 times [2025-02-08 14:07:49,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:07:49,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439207377] [2025-02-08 14:07:49,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:07:49,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:07:49,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:07:49,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:07:49,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:07:49,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:07:49,626 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 14:07:49,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:07:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439207377] [2025-02-08 14:07:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439207377] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:07:49,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:07:49,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:07:49,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634215404] [2025-02-08 14:07:49,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:07:49,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:07:49,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:07:49,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:07:49,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:07:49,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 230 [2025-02-08 14:07:49,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 230 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 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 14:07:49,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:07:49,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 230 [2025-02-08 14:07:49,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand