./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 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_92-evilcollapse_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 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:16:14,093 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:16:14,157 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:16:14,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:16:14,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:16:14,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:16:14,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:16:14,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:16:14,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:16:14,186 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:16:14,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:16:14,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:16:14,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:16:14,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:16:14,187 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:16:14,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:16:14,187 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:16:14,187 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:16:14,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:16:14,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:16:14,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:16:14,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:16:14,188 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:16:14,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:16:14,188 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:16:14,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:16:14,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:16:14,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:16:14,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:16:14,189 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:16:14,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:16:14,189 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 -> 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 [2025-03-04 02:16:14,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:16:14,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:16:14,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:16:14,434 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:16:14,434 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:16:14,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2025-03-04 02:16:15,554 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4884fba64/63a4282bc1134637b3c172237a95c968/FLAG48e9324ee [2025-03-04 02:16:15,872 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:16:15,873 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2025-03-04 02:16:15,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4884fba64/63a4282bc1134637b3c172237a95c968/FLAG48e9324ee [2025-03-04 02:16:16,131 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4884fba64/63a4282bc1134637b3c172237a95c968 [2025-03-04 02:16:16,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:16:16,135 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:16:16,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:16:16,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:16:16,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:16:16,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2427776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16, skipping insertion in model container [2025-03-04 02:16:16,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,168 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:16:16,491 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_92-evilcollapse_racing.i[47038,47051] [2025-03-04 02:16:16,499 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:16,499 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:16,499 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:16,500 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:16,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:16:16,562 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:16:16,599 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_92-evilcollapse_racing.i[47038,47051] [2025-03-04 02:16:16,601 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:16,601 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:16,603 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:16,603 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-04 02:16:16,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:16:16,659 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:16:16,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16 WrapperNode [2025-03-04 02:16:16,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:16:16,662 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:16:16,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:16:16,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:16:16,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,699 INFO L138 Inliner]: procedures = 280, calls = 135, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 291 [2025-03-04 02:16:16,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:16:16,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:16:16,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:16:16,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:16:16,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,711 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,728 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]. [2025-03-04 02:16:16,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,739 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:16:16,751 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:16:16,751 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:16:16,751 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:16:16,752 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (1/1) ... [2025-03-04 02:16:16,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:16:16,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:16:16,778 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 02:16:16,784 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 02:16:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 02:16:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 02:16:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 02:16:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 02:16:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 02:16:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 02:16:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 02:16:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 02:16:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 02:16:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:16:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 02:16:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 02:16:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 02:16:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-04 02:16:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-04 02:16:16,802 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-04 02:16:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:16:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 02:16:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 02:16:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 02:16:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:16:16,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:16:16,804 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 02:16:16,923 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:16:16,925 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:16:17,209 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1072: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-04 02:16:17,210 INFO L1325 $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 [2025-03-04 02:16:17,286 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:16:17,286 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:16:17,724 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:16:17,725 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:16:17,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:16:17 BoogieIcfgContainer [2025-03-04 02:16:17,725 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:16:17,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:16:17,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:16:17,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:16:17,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:16:16" (1/3) ... [2025-03-04 02:16:17,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f7a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:16:17, skipping insertion in model container [2025-03-04 02:16:17,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:16:16" (2/3) ... [2025-03-04 02:16:17,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f7a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:16:17, skipping insertion in model container [2025-03-04 02:16:17,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:16:17" (3/3) ... [2025-03-04 02:16:17,732 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2025-03-04 02:16:17,746 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:16:17,748 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_92-evilcollapse_racing.i that has 2 procedures, 42 locations, 1 initial locations, 10 loop locations, and 1 error locations. [2025-03-04 02:16:17,748 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:16:17,793 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-04 02:16:17,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 59 transitions, 125 flow [2025-03-04 02:16:17,860 INFO L124 PetriNetUnfolderBase]: 17/63 cut-off events. [2025-03-04 02:16:17,862 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 02:16:17,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 17/63 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2025-03-04 02:16:17,866 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 59 transitions, 125 flow [2025-03-04 02:16:17,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 57 transitions, 118 flow [2025-03-04 02:16:17,876 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:16:17,887 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;@1d2e851, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:16:17,889 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-04 02:16:17,897 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:16:17,897 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2025-03-04 02:16:17,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:16:17,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:17,898 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-04 02:16:17,899 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:16:17,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:17,903 INFO L85 PathProgramCache]: Analyzing trace with hash -895016444, now seen corresponding path program 1 times [2025-03-04 02:16:17,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:17,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218680087] [2025-03-04 02:16:17,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:16:17,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:17,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 02:16:18,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 02:16:18,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:16:18,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:18,233 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 02:16:18,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:18,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218680087] [2025-03-04 02:16:18,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218680087] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:16:18,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:16:18,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 02:16:18,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587616401] [2025-03-04 02:16:18,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:16:18,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:16:18,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:16:18,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:16:18,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:16:18,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-04 02:16:18,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 57 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 02:16:18,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:16:18,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-04 02:16:18,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:16:18,487 INFO L124 PetriNetUnfolderBase]: 111/310 cut-off events. [2025-03-04 02:16:18,487 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:16:18,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 310 events. 111/310 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1273 event pairs, 90 based on Foata normal form. 36/284 useless extension candidates. Maximal degree in co-relation 509. Up to 226 conditions per place. [2025-03-04 02:16:18,493 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 32 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2025-03-04 02:16:18,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 170 flow [2025-03-04 02:16:18,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:16:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:16:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2025-03-04 02:16:18,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5141242937853108 [2025-03-04 02:16:18,507 INFO L175 Difference]: Start difference. First operand has 44 places, 57 transitions, 118 flow. Second operand 3 states and 91 transitions. [2025-03-04 02:16:18,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 170 flow [2025-03-04 02:16:18,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 02:16:18,514 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 108 flow [2025-03-04 02:16:18,516 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2025-03-04 02:16:18,518 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2025-03-04 02:16:18,518 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 108 flow [2025-03-04 02:16:18,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 02:16:18,518 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:18,519 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:16:18,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 02:16:18,519 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:16:18,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:18,519 INFO L85 PathProgramCache]: Analyzing trace with hash -286657864, now seen corresponding path program 1 times [2025-03-04 02:16:18,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:18,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062449067] [2025-03-04 02:16:18,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:16:18,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:18,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 02:16:18,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 02:16:18,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:16:18,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:18,633 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 02:16:18,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:18,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062449067] [2025-03-04 02:16:18,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062449067] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:16:18,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:16:18,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 02:16:18,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814007016] [2025-03-04 02:16:18,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:16:18,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:16:18,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:16:18,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:16:18,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:16:18,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-04 02:16:18,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 02:16:18,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:16:18,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-04 02:16:18,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:16:18,819 INFO L124 PetriNetUnfolderBase]: 111/312 cut-off events. [2025-03-04 02:16:18,819 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:16:18,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 312 events. 111/312 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1276 event pairs, 90 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 536. Up to 229 conditions per place. [2025-03-04 02:16:18,823 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 31 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2025-03-04 02:16:18,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 176 flow [2025-03-04 02:16:18,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:16:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:16:18,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2025-03-04 02:16:18,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4406779661016949 [2025-03-04 02:16:18,825 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 108 flow. Second operand 3 states and 78 transitions. [2025-03-04 02:16:18,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 176 flow [2025-03-04 02:16:18,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 02:16:18,826 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 120 flow [2025-03-04 02:16:18,826 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2025-03-04 02:16:18,827 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2025-03-04 02:16:18,827 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 120 flow [2025-03-04 02:16:18,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 02:16:18,827 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:18,827 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:16:18,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 02:16:18,827 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:16:18,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:18,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1865598367, now seen corresponding path program 1 times [2025-03-04 02:16:18,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:18,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884112351] [2025-03-04 02:16:18,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:16:18,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:18,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 02:16:18,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 02:16:18,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:16:18,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:19,018 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 02:16:19,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884112351] [2025-03-04 02:16:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884112351] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:16:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399198082] [2025-03-04 02:16:19,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:16:19,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:16:19,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:16:19,021 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 02:16:19,023 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 02:16:19,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 02:16:19,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 02:16:19,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:16:19,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:19,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 02:16:19,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:16:19,221 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 02:16:19,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 02:16:19,240 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 02:16:19,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399198082] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 02:16:19,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 02:16:19,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-04 02:16:19,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011964366] [2025-03-04 02:16:19,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 02:16:19,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 02:16:19,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:16:19,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 02:16:19,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-04 02:16:19,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-04 02:16:19,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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 02:16:19,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:16:19,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-04 02:16:19,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:16:19,523 INFO L124 PetriNetUnfolderBase]: 111/318 cut-off events. [2025-03-04 02:16:19,525 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 02:16:19,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 318 events. 111/318 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1292 event pairs, 90 based on Foata normal form. 6/265 useless extension candidates. Maximal degree in co-relation 543. Up to 229 conditions per place. [2025-03-04 02:16:19,528 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 31 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2025-03-04 02:16:19,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 204 flow [2025-03-04 02:16:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:16:19,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 02:16:19,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2025-03-04 02:16:19,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3615819209039548 [2025-03-04 02:16:19,532 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 120 flow. Second operand 6 states and 128 transitions. [2025-03-04 02:16:19,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 204 flow [2025-03-04 02:16:19,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 200 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-04 02:16:19,534 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 158 flow [2025-03-04 02:16:19,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2025-03-04 02:16:19,535 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2025-03-04 02:16:19,536 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 158 flow [2025-03-04 02:16:19,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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 02:16:19,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:19,536 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:16:19,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 02:16:19,736 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 02:16:19,738 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:16:19,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash -246213384, now seen corresponding path program 2 times [2025-03-04 02:16:19,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:19,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871369338] [2025-03-04 02:16:19,738 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 02:16:19,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:19,807 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-04 02:16:19,851 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 02:16:19,851 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 02:16:19,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:20,000 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 02:16:20,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:20,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871369338] [2025-03-04 02:16:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871369338] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:16:20,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128573702] [2025-03-04 02:16:20,001 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 02:16:20,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:16:20,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:16:20,003 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 02:16:20,005 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 02:16:20,158 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-04 02:16:20,241 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 02:16:20,242 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 02:16:20,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:20,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 02:16:20,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:16:20,280 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 02:16:20,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 02:16:20,339 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 02:16:20,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128573702] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 02:16:20,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 02:16:20,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2025-03-04 02:16:20,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698969760] [2025-03-04 02:16:20,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 02:16:20,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 02:16:20,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:16:20,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 02:16:20,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-04 02:16:20,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-04 02:16:20,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 158 flow. Second operand has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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 02:16:20,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:16:20,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-04 02:16:20,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:16:21,246 INFO L124 PetriNetUnfolderBase]: 112/343 cut-off events. [2025-03-04 02:16:21,247 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2025-03-04 02:16:21,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 343 events. 112/343 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1347 event pairs, 90 based on Foata normal form. 19/303 useless extension candidates. Maximal degree in co-relation 539. Up to 226 conditions per place. [2025-03-04 02:16:21,248 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 31 selfloop transitions, 36 changer transitions 0/82 dead transitions. [2025-03-04 02:16:21,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 82 transitions, 492 flow [2025-03-04 02:16:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-04 02:16:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-04 02:16:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 596 transitions. [2025-03-04 02:16:21,251 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2971086739780658 [2025-03-04 02:16:21,251 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 158 flow. Second operand 34 states and 596 transitions. [2025-03-04 02:16:21,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 82 transitions, 492 flow [2025-03-04 02:16:21,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 82 transitions, 450 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-03-04 02:16:21,254 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 450 flow [2025-03-04 02:16:21,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=450, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2025-03-04 02:16:21,255 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 57 predicate places. [2025-03-04 02:16:21,255 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 450 flow [2025-03-04 02:16:21,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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 02:16:21,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:16:21,255 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 02:16:21,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 02:16:21,456 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 02:16:21,456 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:16:21,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:16:21,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1025366188, now seen corresponding path program 3 times [2025-03-04 02:16:21,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:16:21,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513122024] [2025-03-04 02:16:21,457 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 02:16:21,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:16:21,639 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes. [2025-03-04 02:16:28,481 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 02:16:28,482 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-04 02:16:28,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:16:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-03-04 02:16:29,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:16:29,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513122024] [2025-03-04 02:16:29,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513122024] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:16:29,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528307371] [2025-03-04 02:16:29,048 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 02:16:29,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:16:29,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:16:29,051 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 02:16:29,053 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 02:16:29,377 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes.