./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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_90-arrayloop2_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:16:07,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:16:07,752 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:16:07,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:16:07,759 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:16:07,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:16:07,780 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:16:07,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:16:07,780 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:16:07,781 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:16:07,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:16:07,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:16:07,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:16:07,782 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:16:07,782 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:16:07,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:16:07,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:16:07,782 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:16:07,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:16:07,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:16:07,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:16:07,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:16:07,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:16:07,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:16:07,783 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:16:07,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:16:07,783 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:16:07,783 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:16:07,783 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:16:07,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:16:07,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:16:07,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:16:07,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:16:07,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:16:07,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:16:07,784 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:16:07,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:16:07,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:16:07,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:16:07,785 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:16:07,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:16:07,785 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:16:07,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:16:07,785 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 ! call(reach_error())) ) 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 -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2025-03-04 02:16:07,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:16:08,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:16:08,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:16:08,009 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:16:08,009 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:16:08,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2025-03-04 02:16:09,130 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ccd621a3/ec79eee3633648379292833f20e1f8b1/FLAG8d9658cdc [2025-03-04 02:16:09,441 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:16:09,443 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2025-03-04 02:16:09,461 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ccd621a3/ec79eee3633648379292833f20e1f8b1/FLAG8d9658cdc [2025-03-04 02:16:09,476 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ccd621a3/ec79eee3633648379292833f20e1f8b1 [2025-03-04 02:16:09,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:16:09,480 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:16:09,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:16:09,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:16:09,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:16:09,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:09,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53dbe50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09, skipping insertion in model container [2025-03-04 02:16:09,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:09,523 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:16:09,749 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2025-03-04 02:16:09,760 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:09,760 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:09,760 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:09,761 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:09,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:16:09,821 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:16:09,866 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2025-03-04 02:16:09,870 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:09,872 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:09,872 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:09,872 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:09,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:16:09,932 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:16:09,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09 WrapperNode [2025-03-04 02:16:09,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:16:09,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:16:09,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:16:09,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:16:09,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:09,953 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:09,974 INFO L138 Inliner]: procedures = 280, calls = 142, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 354 [2025-03-04 02:16:09,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:16:09,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:16:09,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:16:09,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:16:09,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:09,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:09,984 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:10,001 INFO L175 MemorySlicer]: Split 105 memory accesses to 5 slices as follows [2, 5, 94, 2, 2]. 90 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 70, 0, 0]. The 15 writes are split as follows [0, 0, 13, 1, 1]. [2025-03-04 02:16:10,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:10,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:10,015 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:10,019 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:10,022 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:10,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:10,026 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:16:10,027 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:16:10,027 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:16:10,027 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:16:10,031 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (1/1) ... [2025-03-04 02:16:10,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:16:10,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:16:10,059 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) [2025-03-04 02:16:10,061 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 [2025-03-04 02:16:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 02:16:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 02:16:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 02:16:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 02:16:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 02:16:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-04 02:16:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-03-04 02:16:10,079 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-03-04 02:16:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 02:16:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 02:16:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-04 02:16:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-04 02:16:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-04 02:16:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-04 02:16:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 02:16:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 02:16:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 02:16:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 02:16:10,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-03-04 02:16:10,080 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 02:16:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 02:16:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-04 02:16:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-04 02:16:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:16:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 02:16:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 02:16:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 02:16:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 02:16:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:16:10,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:16:10,082 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 02:16:10,236 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:16:10,237 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:16:10,699 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2025-03-04 02:16:10,700 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2025-03-04 02:16:10,700 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082-2: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2025-03-04 02:16:10,700 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082-3: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2025-03-04 02:16:10,701 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:16:10,702 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:16:11,113 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:16:11,115 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:16:11,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:16:11 BoogieIcfgContainer [2025-03-04 02:16:11,116 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:16:11,117 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:16:11,118 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:16:11,120 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:16:11,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:16:09" (1/3) ... [2025-03-04 02:16:11,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdb81a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:16:11, skipping insertion in model container [2025-03-04 02:16:11,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:09" (2/3) ... [2025-03-04 02:16:11,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdb81a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:16:11, skipping insertion in model container [2025-03-04 02:16:11,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:16:11" (3/3) ... [2025-03-04 02:16:11,122 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2025-03-04 02:16:11,133 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:16:11,135 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_90-arrayloop2_racing.i that has 3 procedures, 80 locations, 1 initial locations, 18 loop locations, and 2 error locations. [2025-03-04 02:16:11,135 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:16:11,192 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-04 02:16:11,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 115 transitions, 250 flow [2025-03-04 02:16:11,283 INFO L124 PetriNetUnfolderBase]: 52/191 cut-off events. [2025-03-04 02:16:11,287 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-04 02:16:11,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 191 events. 52/191 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 785 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2025-03-04 02:16:11,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 115 transitions, 250 flow [2025-03-04 02:16:11,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 115 transitions, 250 flow [2025-03-04 02:16:11,303 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:16:11,313 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;@2736c534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:16:11,313 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-04 02:16:11,323 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:16:11,323 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2025-03-04 02:16:11,323 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:16:11,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:11,324 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-04 02:16:11,324 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 02:16:11,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:11,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1852251146, now seen corresponding path program 1 times [2025-03-04 02:16:11,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:11,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936404895] [2025-03-04 02:16:11,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:16:11,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:11,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 02:16:11,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 02:16:11,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:16:11,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:11,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:11,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936404895] [2025-03-04 02:16:11,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936404895] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:16:11,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:16:11,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 02:16:11,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078904867] [2025-03-04 02:16:11,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:16:11,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:16:11,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:16:11,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:16:11,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:16:11,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-04 02:16:11,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 115 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2025-03-04 02:16:11,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:16:11,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-04 02:16:11,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:16:12,807 INFO L124 PetriNetUnfolderBase]: 6535/12760 cut-off events. [2025-03-04 02:16:12,807 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2025-03-04 02:16:12,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22456 conditions, 12760 events. 6535/12760 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 102473 event pairs, 5490 based on Foata normal form. 1876/12657 useless extension candidates. Maximal degree in co-relation 21407. Up to 9568 conditions per place. [2025-03-04 02:16:12,881 INFO L140 encePairwiseOnDemand]: 90/115 looper letters, 64 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2025-03-04 02:16:12,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 344 flow [2025-03-04 02:16:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:16:12,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:16:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2025-03-04 02:16:12,891 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.518840579710145 [2025-03-04 02:16:12,892 INFO L175 Difference]: Start difference. First operand has 86 places, 115 transitions, 250 flow. Second operand 3 states and 179 transitions. [2025-03-04 02:16:12,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 344 flow [2025-03-04 02:16:12,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 02:16:12,898 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 218 flow [2025-03-04 02:16:12,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2025-03-04 02:16:12,902 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2025-03-04 02:16:12,902 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 218 flow [2025-03-04 02:16:12,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2025-03-04 02:16:12,903 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:12,903 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:16:12,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 02:16:12,903 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 02:16:12,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:12,904 INFO L85 PathProgramCache]: Analyzing trace with hash -44823480, now seen corresponding path program 1 times [2025-03-04 02:16:12,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:12,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400450980] [2025-03-04 02:16:12,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:16:12,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:12,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 02:16:12,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 02:16:12,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:16:12,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:13,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:13,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400450980] [2025-03-04 02:16:13,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400450980] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:16:13,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:16:13,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 02:16:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522705484] [2025-03-04 02:16:13,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:16:13,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:16:13,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:16:13,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:16:13,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:16:13,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-04 02:16:13,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2025-03-04 02:16:13,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:16:13,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-04 02:16:13,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:16:14,025 INFO L124 PetriNetUnfolderBase]: 6535/12762 cut-off events. [2025-03-04 02:16:14,025 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2025-03-04 02:16:14,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22467 conditions, 12762 events. 6535/12762 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 102417 event pairs, 5490 based on Foata normal form. 2/10788 useless extension candidates. Maximal degree in co-relation 22448. Up to 9571 conditions per place. [2025-03-04 02:16:14,121 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 63 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2025-03-04 02:16:14,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 95 transitions, 350 flow [2025-03-04 02:16:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:16:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:16:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2025-03-04 02:16:14,125 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4492753623188406 [2025-03-04 02:16:14,125 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 218 flow. Second operand 3 states and 155 transitions. [2025-03-04 02:16:14,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 95 transitions, 350 flow [2025-03-04 02:16:14,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 95 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 02:16:14,129 INFO L231 Difference]: Finished difference. Result has 91 places, 95 transitions, 230 flow [2025-03-04 02:16:14,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=91, PETRI_TRANSITIONS=95} [2025-03-04 02:16:14,130 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2025-03-04 02:16:14,130 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 95 transitions, 230 flow [2025-03-04 02:16:14,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2025-03-04 02:16:14,130 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:14,130 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:16:14,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 02:16:14,130 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 02:16:14,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:14,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1695517373, now seen corresponding path program 1 times [2025-03-04 02:16:14,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:14,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628715137] [2025-03-04 02:16:14,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:16:14,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:14,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 02:16:14,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 02:16:14,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:16:14,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:14,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:14,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:14,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628715137] [2025-03-04 02:16:14,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628715137] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:16:14,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979826621] [2025-03-04 02:16:14,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:16:14,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:16:14,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:16:14,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 02:16:14,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 02:16:14,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 02:16:14,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 02:16:14,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:16:14,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:14,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 02:16:14,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:16:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:14,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 02:16:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:14,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979826621] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 02:16:14,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 02:16:14,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-04 02:16:14,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307553216] [2025-03-04 02:16:14,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 02:16:14,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 02:16:14,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:16:14,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 02:16:14,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-04 02:16:14,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-04 02:16:14,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 95 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 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) [2025-03-04 02:16:14,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:16:14,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-04 02:16:14,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:16:15,506 INFO L124 PetriNetUnfolderBase]: 6535/12768 cut-off events. [2025-03-04 02:16:15,507 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2025-03-04 02:16:15,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22495 conditions, 12768 events. 6535/12768 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 102479 event pairs, 5490 based on Foata normal form. 6/10798 useless extension candidates. Maximal degree in co-relation 22455. Up to 9571 conditions per place. [2025-03-04 02:16:15,555 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 63 selfloop transitions, 5 changer transitions 0/98 dead transitions. [2025-03-04 02:16:15,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 98 transitions, 378 flow [2025-03-04 02:16:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:16:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:16:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 250 transitions. [2025-03-04 02:16:15,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36231884057971014 [2025-03-04 02:16:15,559 INFO L175 Difference]: Start difference. First operand has 91 places, 95 transitions, 230 flow. Second operand 6 states and 250 transitions. [2025-03-04 02:16:15,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 98 transitions, 378 flow [2025-03-04 02:16:15,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-04 02:16:15,563 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 268 flow [2025-03-04 02:16:15,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2025-03-04 02:16:15,565 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2025-03-04 02:16:15,565 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 268 flow [2025-03-04 02:16:15,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 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) [2025-03-04 02:16:15,565 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:15,565 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:16:15,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 02:16:15,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:16:15,766 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 02:16:15,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1247546616, now seen corresponding path program 2 times [2025-03-04 02:16:15,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:15,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483328897] [2025-03-04 02:16:15,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 02:16:15,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:15,811 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-04 02:16:15,845 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 02:16:15,845 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 02:16:15,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-04 02:16:15,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:15,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483328897] [2025-03-04 02:16:15,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483328897] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:16:15,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734892757] [2025-03-04 02:16:15,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 02:16:15,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:16:15,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:16:15,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 02:16:15,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 02:16:16,123 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-04 02:16:16,197 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 02:16:16,198 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 02:16:16,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:16,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 02:16:16,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:16:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:16,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 02:16:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:16:16,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734892757] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 02:16:16,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 02:16:16,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2025-03-04 02:16:16,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602693473] [2025-03-04 02:16:16,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 02:16:16,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 02:16:16,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:16:16,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 02:16:16,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-04 02:16:16,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-04 02:16:16,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 268 flow. Second operand has 14 states, 14 states have (on average 31.571428571428573) internal successors, (442), 14 states have internal predecessors, (442), 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) [2025-03-04 02:16:16,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:16:16,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-04 02:16:16,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:16:17,993 INFO L124 PetriNetUnfolderBase]: 6536/12793 cut-off events. [2025-03-04 02:16:17,993 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2025-03-04 02:16:18,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22623 conditions, 12793 events. 6536/12793 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 102557 event pairs, 5490 based on Foata normal form. 19/10836 useless extension candidates. Maximal degree in co-relation 22451. Up to 9568 conditions per place. [2025-03-04 02:16:18,055 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 63 selfloop transitions, 36 changer transitions 0/129 dead transitions. [2025-03-04 02:16:18,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 129 transitions, 666 flow [2025-03-04 02:16:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-04 02:16:18,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-04 02:16:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1138 transitions. [2025-03-04 02:16:18,060 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29104859335038363 [2025-03-04 02:16:18,060 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 268 flow. Second operand 34 states and 1138 transitions. [2025-03-04 02:16:18,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 129 transitions, 666 flow [2025-03-04 02:16:18,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 129 transitions, 624 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-03-04 02:16:18,064 INFO L231 Difference]: Finished difference. Result has 143 places, 129 transitions, 560 flow [2025-03-04 02:16:18,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=560, PETRI_PLACES=143, PETRI_TRANSITIONS=129} [2025-03-04 02:16:18,065 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 57 predicate places. [2025-03-04 02:16:18,065 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 129 transitions, 560 flow [2025-03-04 02:16:18,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 31.571428571428573) internal successors, (442), 14 states have internal predecessors, (442), 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) [2025-03-04 02:16:18,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:18,065 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 02:16:18,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 02:16:18,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-04 02:16:18,268 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 02:16:18,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:18,269 INFO L85 PathProgramCache]: Analyzing trace with hash -79998118, now seen corresponding path program 3 times [2025-03-04 02:16:18,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:18,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703510152] [2025-03-04 02:16:18,269 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 02:16:18,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:18,499 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes. [2025-03-04 02:16:27,947 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 02:16:27,947 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-04 02:16:27,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-03-04 02:16:28,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:28,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703510152] [2025-03-04 02:16:28,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703510152] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:16:28,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009119731] [2025-03-04 02:16:28,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 02:16:28,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:16:28,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:16:28,221 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 02:16:28,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 02:16:28,649 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes.