./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 735b3cc8 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_91-arrayloop2_racefree.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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 00:58:52,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 00:58:52,734 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 00:58:52,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 00:58:52,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 00:58:52,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 00:58:52,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 00:58:52,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 00:58:52,764 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 00:58:52,764 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 00:58:52,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 00:58:52,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 00:58:52,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 00:58:52,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 00:58:52,765 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 00:58:52,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 00:58:52,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 00:58:52,766 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 00:58:52,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 00:58:52,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 00:58:52,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 00:58:52,766 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 00:58:52,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 00:58:52,766 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 00:58:52,766 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 00:58:52,766 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 00:58:52,766 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 00:58:52,767 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 00:58:52,767 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 00:58:52,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 00:58:52,767 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 00:58:52,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 00:58:52,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:58:52,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 00:58:52,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 00:58:52,768 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 00:58:52,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 00:58:52,768 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 00:58:52,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 00:58:52,768 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 00:58:52,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 00:58:52,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 00:58:52,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 00:58:52,768 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 -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2025-03-14 00:58:53,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 00:58:53,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 00:58:53,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 00:58:53,011 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 00:58:53,011 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 00:58:53,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2025-03-14 00:58:54,107 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d360874/d45c54efc0044143a465d287d8a08ee2/FLAG6f78dd0fb [2025-03-14 00:58:54,386 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 00:58:54,386 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2025-03-14 00:58:54,405 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d360874/d45c54efc0044143a465d287d8a08ee2/FLAG6f78dd0fb [2025-03-14 00:58:54,419 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d360874/d45c54efc0044143a465d287d8a08ee2 [2025-03-14 00:58:54,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 00:58:54,422 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 00:58:54,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 00:58:54,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 00:58:54,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 00:58:54,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:54,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411f8229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54, skipping insertion in model container [2025-03-14 00:58:54,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:54,466 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 00:58:54,788 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_91-arrayloop2_racefree.i[47038,47051] [2025-03-14 00:58:54,800 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:54,800 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:54,801 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:54,802 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:54,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:58:54,850 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 00:58:54,879 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_91-arrayloop2_racefree.i[47038,47051] [2025-03-14 00:58:54,887 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:54,888 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:54,888 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:54,888 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:54,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:58:54,937 INFO L204 MainTranslator]: Completed translation [2025-03-14 00:58:54,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54 WrapperNode [2025-03-14 00:58:54,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 00:58:54,939 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 00:58:54,939 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 00:58:54,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 00:58:54,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:54,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:54,973 INFO L138 Inliner]: procedures = 279, calls = 119, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2025-03-14 00:58:54,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 00:58:54,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 00:58:54,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 00:58:54,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 00:58:54,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:54,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:54,984 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:54,998 INFO L175 MemorySlicer]: Split 96 memory accesses to 4 slices as follows [2, 5, 87, 2]. 91 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 70, 0]. The 12 writes are split as follows [0, 0, 11, 1]. [2025-03-14 00:58:54,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:54,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:55,006 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:55,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:55,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:55,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:55,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 00:58:55,017 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 00:58:55,017 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 00:58:55,017 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 00:58:55,019 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (1/1) ... [2025-03-14 00:58:55,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:58:55,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:58:55,047 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) [2025-03-14 00:58:55,052 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 [2025-03-14 00:58:55,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-14 00:58:55,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-14 00:58:55,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-14 00:58:55,068 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 00:58:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-14 00:58:55,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-14 00:58:55,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-14 00:58:55,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 00:58:55,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 00:58:55,072 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 00:58:55,190 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 00:58:55,192 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 00:58:55,419 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1061: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-14 00:58:55,419 INFO L1326 $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 [2025-03-14 00:58:55,492 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 00:58:55,492 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 00:58:55,493 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 00:58:56,032 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 00:58:56,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:58:56 BoogieIcfgContainer [2025-03-14 00:58:56,033 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 00:58:56,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 00:58:56,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 00:58:56,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 00:58:56,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 12:58:54" (1/3) ... [2025-03-14 00:58:56,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f63bae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:58:56, skipping insertion in model container [2025-03-14 00:58:56,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:54" (2/3) ... [2025-03-14 00:58:56,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f63bae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 12:58:56, skipping insertion in model container [2025-03-14 00:58:56,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:58:56" (3/3) ... [2025-03-14 00:58:56,040 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2025-03-14 00:58:56,049 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 00:58:56,051 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_91-arrayloop2_racefree.i that has 2 procedures, 42 locations, 1 initial locations, 10 loop locations, and 1 error locations. [2025-03-14 00:58:56,051 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 00:58:56,085 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-14 00:58:56,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 59 transitions, 125 flow [2025-03-14 00:58:56,148 INFO L124 PetriNetUnfolderBase]: 17/63 cut-off events. [2025-03-14 00:58:56,152 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-14 00:58:56,157 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 127 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. [2025-03-14 00:58:56,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 59 transitions, 125 flow [2025-03-14 00:58:56,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 57 transitions, 118 flow [2025-03-14 00:58:56,168 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:58:56,178 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;@105dbc9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:58:56,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-14 00:58:56,190 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:58:56,190 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2025-03-14 00:58:56,190 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:58:56,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:58:56,191 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-14 00:58:56,192 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-14 00:58:56,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:58:56,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1274186611, now seen corresponding path program 1 times [2025-03-14 00:58:56,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:58:56,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962903442] [2025-03-14 00:58:56,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:58:56,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:58:56,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-14 00:58:56,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-14 00:58:56,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:58:56,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:58:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:58:56,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:58:56,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962903442] [2025-03-14 00:58:56,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962903442] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:58:56,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:58:56,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 00:58:56,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220732009] [2025-03-14 00:58:56,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:58:56,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:58:56,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:58:56,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:58:56,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:58:56,501 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-14 00:58:56,503 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) [2025-03-14 00:58:56,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:58:56,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-14 00:58:56,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:58:56,753 INFO L124 PetriNetUnfolderBase]: 111/310 cut-off events. [2025-03-14 00:58:56,753 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:58:56,754 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 1274 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. [2025-03-14 00:58:56,756 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 32 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2025-03-14 00:58:56,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 170 flow [2025-03-14 00:58:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:58:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:58:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2025-03-14 00:58:56,768 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5141242937853108 [2025-03-14 00:58:56,769 INFO L175 Difference]: Start difference. First operand has 44 places, 57 transitions, 118 flow. Second operand 3 states and 91 transitions. [2025-03-14 00:58:56,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 170 flow [2025-03-14 00:58:56,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-14 00:58:56,774 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 108 flow [2025-03-14 00:58:56,776 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} [2025-03-14 00:58:56,779 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2025-03-14 00:58:56,779 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 108 flow [2025-03-14 00:58:56,779 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) [2025-03-14 00:58:56,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:58:56,779 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:58:56,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 00:58:56,780 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-14 00:58:56,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:58:56,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1528776708, now seen corresponding path program 1 times [2025-03-14 00:58:56,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:58:56,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081020544] [2025-03-14 00:58:56,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:58:56,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:58:56,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-14 00:58:56,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-14 00:58:56,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:58:56,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:58:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:58:56,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:58:56,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081020544] [2025-03-14 00:58:56,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081020544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:58:56,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:58:56,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:58:56,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50753081] [2025-03-14 00:58:56,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:58:56,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:58:56,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:58:56,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:58:56,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:58:56,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-14 00:58:56,924 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) [2025-03-14 00:58:56,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:58:56,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-14 00:58:56,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:58:57,108 INFO L124 PetriNetUnfolderBase]: 111/312 cut-off events. [2025-03-14 00:58:57,108 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:58:57,108 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 1280 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. [2025-03-14 00:58:57,110 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 31 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2025-03-14 00:58:57,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 176 flow [2025-03-14 00:58:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:58:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:58:57,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2025-03-14 00:58:57,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4406779661016949 [2025-03-14 00:58:57,111 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 108 flow. Second operand 3 states and 78 transitions. [2025-03-14 00:58:57,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 176 flow [2025-03-14 00:58:57,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 00:58:57,112 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 120 flow [2025-03-14 00:58:57,112 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} [2025-03-14 00:58:57,113 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2025-03-14 00:58:57,113 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 120 flow [2025-03-14 00:58:57,113 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) [2025-03-14 00:58:57,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:58:57,113 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:58:57,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 00:58:57,113 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-14 00:58:57,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:58:57,113 INFO L85 PathProgramCache]: Analyzing trace with hash 281589261, now seen corresponding path program 1 times [2025-03-14 00:58:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:58:57,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409940260] [2025-03-14 00:58:57,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:58:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:58:57,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-14 00:58:57,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-14 00:58:57,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:58:57,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:58:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:58:57,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:58:57,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409940260] [2025-03-14 00:58:57,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409940260] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:58:57,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844617102] [2025-03-14 00:58:57,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:58:57,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:58:57,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:58:57,267 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) [2025-03-14 00:58:57,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-14 00:58:57,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-14 00:58:57,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-14 00:58:57,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:58:57,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:58:57,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-14 00:58:57,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 00:58:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:58:57,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 00:58:57,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:58:57,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844617102] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 00:58:57,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 00:58:57,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-14 00:58:57,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407325601] [2025-03-14 00:58:57,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 00:58:57,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 00:58:57,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:58:57,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 00:58:57,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-14 00:58:57,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-14 00:58:57,461 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) [2025-03-14 00:58:57,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:58:57,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-14 00:58:57,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:58:57,747 INFO L124 PetriNetUnfolderBase]: 111/318 cut-off events. [2025-03-14 00:58:57,747 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-14 00:58:57,748 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 1299 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. [2025-03-14 00:58:57,749 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 31 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2025-03-14 00:58:57,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 204 flow [2025-03-14 00:58:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 00:58:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 00:58:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2025-03-14 00:58:57,750 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3615819209039548 [2025-03-14 00:58:57,750 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 120 flow. Second operand 6 states and 128 transitions. [2025-03-14 00:58:57,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 204 flow [2025-03-14 00:58:57,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 200 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-14 00:58:57,752 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 158 flow [2025-03-14 00:58:57,752 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} [2025-03-14 00:58:57,753 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2025-03-14 00:58:57,753 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 158 flow [2025-03-14 00:58:57,753 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) [2025-03-14 00:58:57,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:58:57,753 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:58:57,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-14 00:58:57,958 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 [2025-03-14 00:58:57,958 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-14 00:58:57,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:58:57,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1576547388, now seen corresponding path program 2 times [2025-03-14 00:58:57,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:58:57,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483998660] [2025-03-14 00:58:57,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:58:57,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:58:58,027 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-14 00:58:58,067 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-14 00:58:58,067 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 00:58:58,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:58:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-14 00:58:58,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:58:58,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483998660] [2025-03-14 00:58:58,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483998660] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:58:58,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907713895] [2025-03-14 00:58:58,223 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:58:58,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:58:58,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:58:58,228 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) [2025-03-14 00:58:58,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-14 00:58:58,372 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-14 00:58:58,455 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-14 00:58:58,455 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 00:58:58,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:58:58,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-14 00:58:58,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 00:58:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:58:58,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 00:58:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 00:58:58,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907713895] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 00:58:58,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 00:58:58,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2025-03-14 00:58:58,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630376954] [2025-03-14 00:58:58,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 00:58:58,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-14 00:58:58,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:58:58,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-14 00:58:58,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-14 00:58:58,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-14 00:58:58,572 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) [2025-03-14 00:58:58,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:58:58,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-14 00:58:58,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:58:59,463 INFO L124 PetriNetUnfolderBase]: 112/343 cut-off events. [2025-03-14 00:58:59,464 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2025-03-14 00:58:59,464 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 1355 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. [2025-03-14 00:58:59,465 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 31 selfloop transitions, 36 changer transitions 0/82 dead transitions. [2025-03-14 00:58:59,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 82 transitions, 492 flow [2025-03-14 00:58:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-14 00:58:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-14 00:58:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 596 transitions. [2025-03-14 00:58:59,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2971086739780658 [2025-03-14 00:58:59,468 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 158 flow. Second operand 34 states and 596 transitions. [2025-03-14 00:58:59,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 82 transitions, 492 flow [2025-03-14 00:58:59,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 82 transitions, 450 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-03-14 00:58:59,471 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 450 flow [2025-03-14 00:58:59,471 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} [2025-03-14 00:58:59,471 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 57 predicate places. [2025-03-14 00:58:59,471 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 450 flow [2025-03-14 00:58:59,472 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) [2025-03-14 00:58:59,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:58:59,472 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-14 00:58:59,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-14 00:58:59,672 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 [2025-03-14 00:58:59,673 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-14 00:58:59,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:58:59,673 INFO L85 PathProgramCache]: Analyzing trace with hash 311256133, now seen corresponding path program 3 times [2025-03-14 00:58:59,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:58:59,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308498361] [2025-03-14 00:58:59,674 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 00:58:59,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:58:59,831 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes. [2025-03-14 00:59:06,836 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 31 of 31 statements. [2025-03-14 00:59:06,837 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-14 00:59:06,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:59:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-03-14 00:59:07,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:59:07,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308498361] [2025-03-14 00:59:07,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308498361] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:59:07,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532626847] [2025-03-14 00:59:07,142 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 00:59:07,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:59:07,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:59:07,144 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) [2025-03-14 00:59:07,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-14 00:59:07,555 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes.