./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.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_91-arrayloop2_racefree.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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:31:09,714 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:31:09,770 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:31:09,775 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:31:09,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:31:09,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:31:09,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:31:09,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:31:09,802 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:31:09,802 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:31:09,802 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:31:09,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:31:09,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:31:09,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:31:09,804 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:31:09,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:31:09,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:31:09,805 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:31:09,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:31:09,805 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:31:09,805 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:31:09,805 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:31:09,806 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:31:09,806 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:31:09,806 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:31:09,806 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:31:09,806 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:31:09,806 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:31:09,806 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:31:09,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:31:09,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:31:09,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:31:09,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:31:09,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:31:09,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:31:09,807 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:31:09,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:31:09,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:31:09,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:31:09,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:31:09,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:31:09,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:31:09,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:31:09,808 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 -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2025-02-06 04:31:10,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:31:10,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:31:10,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:31:10,069 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:31:10,069 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:31:10,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2025-02-06 04:31:11,292 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4c322c6da/2e20d67aec7f4a9f933f5eca5d73411c/FLAGba55838b8 [2025-02-06 04:31:11,673 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:31:11,673 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2025-02-06 04:31:11,694 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4c322c6da/2e20d67aec7f4a9f933f5eca5d73411c/FLAGba55838b8 [2025-02-06 04:31:11,709 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4c322c6da/2e20d67aec7f4a9f933f5eca5d73411c [2025-02-06 04:31:11,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:31:11,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:31:11,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:31:11,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:31:11,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:31:11,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:31:11" (1/1) ... [2025-02-06 04:31:11,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7233164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:11, skipping insertion in model container [2025-02-06 04:31:11,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:31:11" (1/1) ... [2025-02-06 04:31:11,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:31:12,087 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_91-arrayloop2_racefree.i[47038,47051] [2025-02-06 04:31:12,097 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:12,098 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:12,098 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:12,099 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:12,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:31:12,153 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:31:12,179 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_91-arrayloop2_racefree.i[47038,47051] [2025-02-06 04:31:12,181 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:12,181 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:12,181 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:12,182 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:12,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:31:12,226 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:31:12,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12 WrapperNode [2025-02-06 04:31:12,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:31:12,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:31:12,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:31:12,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:31:12,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (1/1) ... [2025-02-06 04:31:12,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (1/1) ... [2025-02-06 04:31:12,268 INFO L138 Inliner]: procedures = 279, calls = 119, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2025-02-06 04:31:12,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:31:12,269 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:31:12,269 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:31:12,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:31:12,279 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (1/1) ... [2025-02-06 04:31:12,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (1/1) ... [2025-02-06 04:31:12,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (1/1) ... [2025-02-06 04:31:12,300 INFO L175 MemorySlicer]: Split 96 memory accesses to 4 slices as follows [2, 5, 2, 87]. 91 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 0, 70]. The 12 writes are split as follows [0, 0, 1, 11]. [2025-02-06 04:31:12,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (1/1) ... [2025-02-06 04:31:12,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (1/1) ... [2025-02-06 04:31:12,319 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (1/1) ... [2025-02-06 04:31:12,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (1/1) ... [2025-02-06 04:31:12,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (1/1) ... [2025-02-06 04:31:12,327 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (1/1) ... [2025-02-06 04:31:12,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:31:12,330 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:31:12,330 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:31:12,333 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:31:12,335 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (1/1) ... [2025-02-06 04:31:12,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:31:12,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:12,374 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 04:31:12,376 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 04:31:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 04:31:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:31:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 04:31:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 04:31:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:31:12,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:31:12,398 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 04:31:12,532 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:31:12,534 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:31:12,841 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1061: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-06 04:31:12,841 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1061-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-02-06 04:31:12,939 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:31:12,940 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:31:13,376 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:31:13,376 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:31:13,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:31:13 BoogieIcfgContainer [2025-02-06 04:31:13,376 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:31:13,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:31:13,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:31:13,381 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:31:13,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:31:11" (1/3) ... [2025-02-06 04:31:13,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c79009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:31:13, skipping insertion in model container [2025-02-06 04:31:13,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:12" (2/3) ... [2025-02-06 04:31:13,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c79009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:31:13, skipping insertion in model container [2025-02-06 04:31:13,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:31:13" (3/3) ... [2025-02-06 04:31:13,383 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2025-02-06 04:31:13,393 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:31:13,395 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_91-arrayloop2_racefree.i that has 2 procedures, 46 locations, 1 initial locations, 11 loop locations, and 1 error locations. [2025-02-06 04:31:13,395 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:31:13,431 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-06 04:31:13,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 63 transitions, 133 flow [2025-02-06 04:31:13,481 INFO L124 PetriNetUnfolderBase]: 17/67 cut-off events. [2025-02-06 04:31:13,483 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 04:31:13,485 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 5. Compared 131 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 04:31:13,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 63 transitions, 133 flow [2025-02-06 04:31:13,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 61 transitions, 126 flow [2025-02-06 04:31:13,492 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:31:13,499 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;@4e594ed0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:31:13,499 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-06 04:31:13,514 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:31:13,514 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2025-02-06 04:31:13,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:31:13,514 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:13,515 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-02-06 04:31:13,515 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 04:31:13,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:13,527 INFO L85 PathProgramCache]: Analyzing trace with hash 908572925, now seen corresponding path program 1 times [2025-02-06 04:31:13,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:13,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151810592] [2025-02-06 04:31:13,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:13,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:13,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 04:31:13,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 04:31:13,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:13,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:13,817 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 04:31:13,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:13,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151810592] [2025-02-06 04:31:13,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151810592] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:31:13,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:31:13,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:31:13,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144155272] [2025-02-06 04:31:13,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:31:13,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:31:13,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:13,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:31:13,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:31:13,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2025-02-06 04:31:13,883 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 04:31:13,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:13,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2025-02-06 04:31:13,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:14,087 INFO L124 PetriNetUnfolderBase]: 111/334 cut-off events. [2025-02-06 04:31:14,087 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:31:14,088 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 1407 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 04:31:14,090 INFO L140 encePairwiseOnDemand]: 49/63 looper letters, 32 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2025-02-06 04:31:14,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 178 flow [2025-02-06 04:31:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:31:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:31:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2025-02-06 04:31:14,098 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.544973544973545 [2025-02-06 04:31:14,099 INFO L175 Difference]: Start difference. First operand has 48 places, 61 transitions, 126 flow. Second operand 3 states and 103 transitions. [2025-02-06 04:31:14,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 178 flow [2025-02-06 04:31:14,102 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 04:31:14,104 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 116 flow [2025-02-06 04:31:14,106 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 04:31:14,109 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2025-02-06 04:31:14,109 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 116 flow [2025-02-06 04:31:14,109 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 04:31:14,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:14,109 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:31:14,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:31:14,110 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 04:31:14,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash 963473096, now seen corresponding path program 1 times [2025-02-06 04:31:14,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:14,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710621297] [2025-02-06 04:31:14,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:14,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:14,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 04:31:14,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 04:31:14,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:14,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:14,246 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 04:31:14,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:14,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710621297] [2025-02-06 04:31:14,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710621297] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:31:14,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:31:14,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:31:14,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142607219] [2025-02-06 04:31:14,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:31:14,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:31:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:14,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:31:14,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:31:14,250 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2025-02-06 04:31:14,250 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 04:31:14,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:14,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2025-02-06 04:31:14,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:14,465 INFO L124 PetriNetUnfolderBase]: 111/336 cut-off events. [2025-02-06 04:31:14,465 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:31:14,466 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 1404 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 04:31:14,467 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 31 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2025-02-06 04:31:14,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 184 flow [2025-02-06 04:31:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:31:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:31:14,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2025-02-06 04:31:14,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-02-06 04:31:14,469 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 116 flow. Second operand 3 states and 90 transitions. [2025-02-06 04:31:14,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 184 flow [2025-02-06 04:31:14,469 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 04:31:14,470 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 128 flow [2025-02-06 04:31:14,470 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 04:31:14,471 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2025-02-06 04:31:14,471 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 128 flow [2025-02-06 04:31:14,471 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 04:31:14,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:14,471 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:31:14,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:31:14,471 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 04:31:14,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:14,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2003325357, now seen corresponding path program 1 times [2025-02-06 04:31:14,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:14,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176612526] [2025-02-06 04:31:14,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:14,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:14,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 04:31:14,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 04:31:14,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:14,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:14,580 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 04:31:14,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176612526] [2025-02-06 04:31:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176612526] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658436905] [2025-02-06 04:31:14,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:14,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:14,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:14,586 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 04:31:14,587 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 04:31:14,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 04:31:14,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 04:31:14,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:14,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:14,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 04:31:14,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:31:14,743 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 04:31:14,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:31:14,757 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 04:31:14,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658436905] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:31:14,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:31:14,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-06 04:31:14,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632803403] [2025-02-06 04:31:14,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:31:14,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:31:14,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:14,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:31:14,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:31:14,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2025-02-06 04:31:14,758 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 04:31:14,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:14,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2025-02-06 04:31:14,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:15,018 INFO L124 PetriNetUnfolderBase]: 111/342 cut-off events. [2025-02-06 04:31:15,018 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 04:31:15,019 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 1412 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 04:31:15,021 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 31 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2025-02-06 04:31:15,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 212 flow [2025-02-06 04:31:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:31:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:31:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2025-02-06 04:31:15,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2025-02-06 04:31:15,023 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 128 flow. Second operand 6 states and 152 transitions. [2025-02-06 04:31:15,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 212 flow [2025-02-06 04:31:15,023 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 04:31:15,024 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 166 flow [2025-02-06 04:31:15,025 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 04:31:15,025 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 12 predicate places. [2025-02-06 04:31:15,025 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 166 flow [2025-02-06 04:31:15,026 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 04:31:15,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:15,026 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:31:15,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:31:15,226 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 04:31:15,227 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 04:31:15,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:15,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1384218632, now seen corresponding path program 2 times [2025-02-06 04:31:15,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:15,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533119905] [2025-02-06 04:31:15,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:31:15,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:15,299 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 04:31:15,323 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:31:15,323 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:31:15,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:15,438 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 04:31:15,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:15,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533119905] [2025-02-06 04:31:15,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533119905] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:15,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976678814] [2025-02-06 04:31:15,440 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:31:15,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:15,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:15,445 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 04:31:15,446 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 04:31:15,610 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 04:31:15,696 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:31:15,697 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:31:15,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:15,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:31:15,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:31:15,743 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 04:31:15,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:31:15,809 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 04:31:15,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976678814] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:31:15,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:31:15,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2025-02-06 04:31:15,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942976174] [2025-02-06 04:31:15,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:31:15,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:31:15,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:15,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:31:15,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:31:15,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2025-02-06 04:31:15,814 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 04:31:15,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:15,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2025-02-06 04:31:15,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:16,818 INFO L124 PetriNetUnfolderBase]: 112/367 cut-off events. [2025-02-06 04:31:16,818 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2025-02-06 04:31:16,820 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 1471 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 04:31:16,821 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 31 selfloop transitions, 36 changer transitions 0/86 dead transitions. [2025-02-06 04:31:16,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 500 flow [2025-02-06 04:31:16,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-06 04:31:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-06 04:31:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 732 transitions. [2025-02-06 04:31:16,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34173669467787116 [2025-02-06 04:31:16,830 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 166 flow. Second operand 34 states and 732 transitions. [2025-02-06 04:31:16,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 500 flow [2025-02-06 04:31:16,832 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 04:31:16,835 INFO L231 Difference]: Finished difference. Result has 105 places, 86 transitions, 458 flow [2025-02-06 04:31:16,835 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 04:31:16,836 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 57 predicate places. [2025-02-06 04:31:16,836 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 86 transitions, 458 flow [2025-02-06 04:31:16,837 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 04:31:16,837 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:16,837 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 04:31:16,844 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 04:31:17,037 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 04:31:17,038 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 04:31:17,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:17,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1202887251, now seen corresponding path program 3 times [2025-02-06 04:31:17,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:17,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011334630] [2025-02-06 04:31:17,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:31:17,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:17,257 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes. [2025-02-06 04:31:24,600 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:31:24,601 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-02-06 04:31:24,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-02-06 04:31:24,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:24,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011334630] [2025-02-06 04:31:24,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011334630] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:24,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325727121] [2025-02-06 04:31:24,915 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:31:24,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:24,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:24,917 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 04:31:24,921 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 04:31:25,252 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes.