./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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_92-evilcollapse_racing.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:31:12,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:31:12,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:31:13,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:31:13,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:31:13,032 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:31:13,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:31:13,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:31:13,035 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:31:13,035 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:31:13,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:31:13,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:31:13,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:31:13,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:31:13,037 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:31:13,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:31:13,038 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:31:13,038 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:31:13,038 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:31:13,038 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:31:13,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:31:13,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:31:13,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:31:13,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:31:13,038 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:31:13,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:31:13,039 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:31:13,039 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:31:13,039 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:31:13,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:31:13,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:31:13,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:31:13,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:31:13,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:31:13,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:31:13,040 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:31:13,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:31:13,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:31:13,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:31:13,041 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:31:13,041 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:31:13,041 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:31:13,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:31:13,041 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 ! 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 -> 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 [2025-02-06 04:31:13,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:31:13,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:31:13,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:31:13,327 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:31:13,328 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:31:13,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2025-02-06 04:31:14,630 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/180d95dca/2848a0ca6ec042de852e3d7f28a465c0/FLAGf8e3c903d [2025-02-06 04:31:14,964 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:31:14,965 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2025-02-06 04:31:14,988 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/180d95dca/2848a0ca6ec042de852e3d7f28a465c0/FLAGf8e3c903d [2025-02-06 04:31:15,007 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/180d95dca/2848a0ca6ec042de852e3d7f28a465c0 [2025-02-06 04:31:15,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:31:15,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:31:15,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:31:15,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:31:15,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:31:15,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f71dd46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15, skipping insertion in model container [2025-02-06 04:31:15,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,074 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:31:15,389 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2025-02-06 04:31:15,401 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:15,401 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:15,402 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:15,402 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:15,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:31:15,468 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:31:15,522 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2025-02-06 04:31:15,525 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:15,526 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:15,526 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:15,526 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:15,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:31:15,604 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:31:15,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15 WrapperNode [2025-02-06 04:31:15,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:31:15,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:31:15,606 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:31:15,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:31:15,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,675 INFO L138 Inliner]: procedures = 280, calls = 135, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 291 [2025-02-06 04:31:15,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:31:15,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:31:15,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:31:15,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:31:15,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,743 INFO L175 MemorySlicer]: Split 110 memory accesses to 4 slices as follows [2, 5, 101, 2]. 92 percent of accesses are in the largest equivalence class. The 87 initializations are split as follows [2, 5, 80, 0]. The 13 writes are split as follows [0, 0, 12, 1]. [2025-02-06 04:31:15,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,770 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,781 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:31:15,794 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:31:15,794 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:31:15,794 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:31:15,795 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (1/1) ... [2025-02-06 04:31:15,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:31:15,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:15,835 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) [2025-02-06 04:31:15,839 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 [2025-02-06 04:31:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 04:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 04:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 04:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 04:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-06 04:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 04:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 04:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 04:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-06 04:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-06 04:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 04:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:31:15,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 04:31:15,867 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 04:31:15,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:31:15,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:31:15,869 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:31:16,054 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:31:16,055 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:31:16,490 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1072: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-06 04:31:16,490 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1072-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-02-06 04:31:16,598 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:31:16,598 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:31:17,241 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:31:17,241 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:31:17,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:31:17 BoogieIcfgContainer [2025-02-06 04:31:17,241 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:31:17,244 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:31:17,244 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:31:17,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:31:17,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:31:15" (1/3) ... [2025-02-06 04:31:17,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c702e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:31:17, skipping insertion in model container [2025-02-06 04:31:17,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:15" (2/3) ... [2025-02-06 04:31:17,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c702e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:31:17, skipping insertion in model container [2025-02-06 04:31:17,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:31:17" (3/3) ... [2025-02-06 04:31:17,251 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2025-02-06 04:31:17,267 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:31:17,269 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_92-evilcollapse_racing.i that has 2 procedures, 46 locations, 1 initial locations, 11 loop locations, and 1 error locations. [2025-02-06 04:31:17,269 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:31:17,324 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-06 04:31:17,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 63 transitions, 133 flow [2025-02-06 04:31:17,401 INFO L124 PetriNetUnfolderBase]: 17/67 cut-off events. [2025-02-06 04:31:17,406 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 04:31:17,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 17/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 125 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2025-02-06 04:31:17,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 63 transitions, 133 flow [2025-02-06 04:31:17,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 61 transitions, 126 flow [2025-02-06 04:31:17,426 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:31:17,440 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;@217ab2ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:31:17,440 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-06 04:31:17,450 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:31:17,451 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2025-02-06 04:31:17,451 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:31:17,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:17,452 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-02-06 04:31:17,452 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 04:31:17,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:17,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2086803566, now seen corresponding path program 1 times [2025-02-06 04:31:17,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:17,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360208516] [2025-02-06 04:31:17,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:17,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:17,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 04:31:17,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 04:31:17,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:17,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:17,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:17,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360208516] [2025-02-06 04:31:17,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360208516] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:31:17,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:31:17,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:31:17,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171759740] [2025-02-06 04:31:17,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:31:17,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:31:17,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:17,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:31:17,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:31:17,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2025-02-06 04:31:17,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 61 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2025-02-06 04:31:17,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:17,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2025-02-06 04:31:17,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:18,263 INFO L124 PetriNetUnfolderBase]: 111/334 cut-off events. [2025-02-06 04:31:18,263 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:31:18,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 334 events. 111/334 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1408 event pairs, 90 based on Foata normal form. 60/332 useless extension candidates. Maximal degree in co-relation 533. Up to 226 conditions per place. [2025-02-06 04:31:18,267 INFO L140 encePairwiseOnDemand]: 49/63 looper letters, 32 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2025-02-06 04:31:18,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 178 flow [2025-02-06 04:31:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:31:18,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:31:18,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2025-02-06 04:31:18,282 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.544973544973545 [2025-02-06 04:31:18,283 INFO L175 Difference]: Start difference. First operand has 48 places, 61 transitions, 126 flow. Second operand 3 states and 103 transitions. [2025-02-06 04:31:18,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 178 flow [2025-02-06 04:31:18,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:31:18,291 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 116 flow [2025-02-06 04:31:18,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2025-02-06 04:31:18,298 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2025-02-06 04:31:18,299 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 116 flow [2025-02-06 04:31:18,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2025-02-06 04:31:18,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:18,299 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:31:18,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:31:18,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 04:31:18,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:18,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1307611548, now seen corresponding path program 1 times [2025-02-06 04:31:18,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:18,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005049844] [2025-02-06 04:31:18,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:18,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:18,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 04:31:18,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 04:31:18,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:18,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:18,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:18,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005049844] [2025-02-06 04:31:18,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005049844] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:31:18,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:31:18,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:31:18,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247751921] [2025-02-06 04:31:18,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:31:18,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:31:18,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:18,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:31:18,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:31:18,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2025-02-06 04:31:18,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2025-02-06 04:31:18,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:18,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2025-02-06 04:31:18,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:18,681 INFO L124 PetriNetUnfolderBase]: 111/336 cut-off events. [2025-02-06 04:31:18,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:31:18,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 336 events. 111/336 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1413 event pairs, 90 based on Foata normal form. 2/279 useless extension candidates. Maximal degree in co-relation 560. Up to 229 conditions per place. [2025-02-06 04:31:18,686 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 31 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2025-02-06 04:31:18,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 184 flow [2025-02-06 04:31:18,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:31:18,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:31:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2025-02-06 04:31:18,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-02-06 04:31:18,689 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 116 flow. Second operand 3 states and 90 transitions. [2025-02-06 04:31:18,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 184 flow [2025-02-06 04:31:18,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:31:18,691 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 128 flow [2025-02-06 04:31:18,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2025-02-06 04:31:18,691 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2025-02-06 04:31:18,693 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 128 flow [2025-02-06 04:31:18,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2025-02-06 04:31:18,693 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:18,694 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:31:18,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:31:18,694 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 04:31:18,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:18,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1653097791, now seen corresponding path program 1 times [2025-02-06 04:31:18,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:18,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684226988] [2025-02-06 04:31:18,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:18,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:18,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 04:31:18,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 04:31:18,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:18,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:18,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:18,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684226988] [2025-02-06 04:31:18,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684226988] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:18,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267530986] [2025-02-06 04:31:18,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:18,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:18,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:18,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:31:18,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:31:19,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 04:31:19,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 04:31:19,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:19,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:19,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 04:31:19,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:31:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:19,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:31:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:19,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267530986] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:31:19,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:31:19,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-06 04:31:19,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145337748] [2025-02-06 04:31:19,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:31:19,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:31:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:19,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:31:19,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:31:19,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2025-02-06 04:31:19,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 128 flow. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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) [2025-02-06 04:31:19,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:19,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2025-02-06 04:31:19,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:19,555 INFO L124 PetriNetUnfolderBase]: 111/342 cut-off events. [2025-02-06 04:31:19,555 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 04:31:19,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 342 events. 111/342 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1429 event pairs, 90 based on Foata normal form. 6/289 useless extension candidates. Maximal degree in co-relation 567. Up to 229 conditions per place. [2025-02-06 04:31:19,559 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 31 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2025-02-06 04:31:19,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 212 flow [2025-02-06 04:31:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:31:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:31:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2025-02-06 04:31:19,563 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2025-02-06 04:31:19,563 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 128 flow. Second operand 6 states and 152 transitions. [2025-02-06 04:31:19,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 212 flow [2025-02-06 04:31:19,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 208 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 04:31:19,565 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 166 flow [2025-02-06 04:31:19,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2025-02-06 04:31:19,568 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 12 predicate places. [2025-02-06 04:31:19,568 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 166 flow [2025-02-06 04:31:19,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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) [2025-02-06 04:31:19,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:19,569 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:31:19,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 04:31:19,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:19,770 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 04:31:19,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:19,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1877876132, now seen corresponding path program 2 times [2025-02-06 04:31:19,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:19,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642181281] [2025-02-06 04:31:19,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:31:19,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:19,856 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 04:31:19,915 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:31:19,915 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:31:19,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-06 04:31:20,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:20,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642181281] [2025-02-06 04:31:20,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642181281] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:20,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118617938] [2025-02-06 04:31:20,127 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:31:20,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:20,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:20,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:31:20,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:31:20,317 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 04:31:20,431 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:31:20,431 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:31:20,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:20,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:31:20,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:31:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:20,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:31:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:20,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118617938] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:31:20,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:31:20,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2025-02-06 04:31:20,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918469620] [2025-02-06 04:31:20,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:31:20,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:31:20,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:20,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:31:20,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:31:20,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2025-02-06 04:31:20,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 166 flow. Second operand has 14 states, 14 states have (on average 20.571428571428573) internal successors, (288), 14 states have internal predecessors, (288), 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) [2025-02-06 04:31:20,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:20,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2025-02-06 04:31:20,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:21,611 INFO L124 PetriNetUnfolderBase]: 112/367 cut-off events. [2025-02-06 04:31:21,612 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2025-02-06 04:31:21,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 367 events. 112/367 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1481 event pairs, 90 based on Foata normal form. 19/327 useless extension candidates. Maximal degree in co-relation 563. Up to 226 conditions per place. [2025-02-06 04:31:21,614 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 31 selfloop transitions, 36 changer transitions 0/86 dead transitions. [2025-02-06 04:31:21,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 500 flow [2025-02-06 04:31:21,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-06 04:31:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-06 04:31:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 732 transitions. [2025-02-06 04:31:21,621 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34173669467787116 [2025-02-06 04:31:21,621 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 166 flow. Second operand 34 states and 732 transitions. [2025-02-06 04:31:21,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 500 flow [2025-02-06 04:31:21,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 86 transitions, 458 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-02-06 04:31:21,629 INFO L231 Difference]: Finished difference. Result has 105 places, 86 transitions, 458 flow [2025-02-06 04:31:21,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=458, PETRI_PLACES=105, PETRI_TRANSITIONS=86} [2025-02-06 04:31:21,631 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 57 predicate places. [2025-02-06 04:31:21,631 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 86 transitions, 458 flow [2025-02-06 04:31:21,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.571428571428573) internal successors, (288), 14 states have internal predecessors, (288), 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) [2025-02-06 04:31:21,632 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:21,632 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 04:31:21,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 04:31:21,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:21,833 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 04:31:21,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:21,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1035032678, now seen corresponding path program 3 times [2025-02-06 04:31:21,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:21,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072574116] [2025-02-06 04:31:21,834 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:31:21,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:22,112 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes. [2025-02-06 04:31:30,132 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:31:30,132 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-02-06 04:31:30,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-02-06 04:31:30,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:30,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072574116] [2025-02-06 04:31:30,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072574116] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:30,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752635011] [2025-02-06 04:31:30,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:31:30,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:30,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:30,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:31:30,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:31:31,417 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes.