./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_90-arrayloop2_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 00:58:52,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 00:58:53,026 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 00:58:53,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 00:58:53,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 00:58:53,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 00:58:53,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 00:58:53,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 00:58:53,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 00:58:53,047 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 00:58:53,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 00:58:53,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 00:58:53,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 00:58:53,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 00:58:53,048 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 00:58:53,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 00:58:53,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 00:58:53,048 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 00:58:53,049 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 00:58:53,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 00:58:53,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 00:58:53,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 00:58:53,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 00:58:53,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 00:58:53,049 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 00:58:53,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 00:58:53,049 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 00:58:53,049 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 00:58:53,050 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 00:58:53,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 00:58:53,050 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 00:58:53,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 00:58:53,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:58:53,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 00:58:53,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 00:58:53,050 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 00:58:53,050 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 00:58:53,050 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 00:58:53,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 00:58:53,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 00:58:53,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 00:58:53,051 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 00:58:53,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 00:58:53,051 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2025-03-14 00:58:53,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 00:58:53,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 00:58:53,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 00:58:53,319 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 00:58:53,320 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 00:58:53,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2025-03-14 00:58:54,517 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6304ba6e1/f215fa529e2d4d81a5033fa2d1f417e8/FLAG4c223c1a5 [2025-03-14 00:58:54,884 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 00:58:54,887 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2025-03-14 00:58:54,902 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6304ba6e1/f215fa529e2d4d81a5033fa2d1f417e8/FLAG4c223c1a5 [2025-03-14 00:58:55,108 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6304ba6e1/f215fa529e2d4d81a5033fa2d1f417e8 [2025-03-14 00:58:55,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 00:58:55,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 00:58:55,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 00:58:55,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 00:58:55,121 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 00:58:55,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa89389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55, skipping insertion in model container [2025-03-14 00:58:55,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,157 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 00:58:55,474 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2025-03-14 00:58:55,486 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:55,487 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:55,487 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:55,487 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:55,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:58:55,544 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 00:58:55,580 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2025-03-14 00:58:55,582 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:55,582 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:55,583 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:55,583 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-14 00:58:55,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 00:58:55,644 INFO L204 MainTranslator]: Completed translation [2025-03-14 00:58:55,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55 WrapperNode [2025-03-14 00:58:55,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 00:58:55,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 00:58:55,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 00:58:55,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 00:58:55,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,697 INFO L138 Inliner]: procedures = 280, calls = 142, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 354 [2025-03-14 00:58:55,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 00:58:55,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 00:58:55,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 00:58:55,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 00:58:55,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,711 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,729 INFO L175 MemorySlicer]: Split 105 memory accesses to 5 slices as follows [2, 2, 5, 94, 2]. 90 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 0, 5, 70, 0]. The 15 writes are split as follows [0, 1, 0, 13, 1]. [2025-03-14 00:58:55,729 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,738 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,745 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 00:58:55,745 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 00:58:55,745 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 00:58:55,745 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 00:58:55,746 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (1/1) ... [2025-03-14 00:58:55,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 00:58:55,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:58:55,776 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 00:58:55,779 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 00:58:55,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-14 00:58:55,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-14 00:58:55,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-14 00:58:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-14 00:58:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-14 00:58:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-14 00:58:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-03-14 00:58:55,798 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-03-14 00:58:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-14 00:58:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-14 00:58:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-14 00:58:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-14 00:58:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-14 00:58:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-14 00:58:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-14 00:58:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-14 00:58:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-14 00:58:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-14 00:58:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-14 00:58:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-14 00:58:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-03-14 00:58:55,800 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-03-14 00:58:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-14 00:58:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-14 00:58:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-14 00:58:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-14 00:58:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-14 00:58:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 00:58:55,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 00:58:55,802 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 00:58:55,934 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 00:58:55,935 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 00:58:56,351 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2025-03-14 00:58:56,352 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2025-03-14 00:58:56,352 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082-2: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2025-03-14 00:58:56,352 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082-3: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2025-03-14 00:58:56,353 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 00:58:56,353 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 00:58:56,353 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 00:58:56,904 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 00:58:56,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 12:58:56 BoogieIcfgContainer [2025-03-14 00:58:56,905 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 00:58:56,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 00:58:56,907 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 00:58:56,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 00:58:56,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 12:58:55" (1/3) ... [2025-03-14 00:58:56,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5866610d 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 00:58:56,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 12:58:55" (2/3) ... [2025-03-14 00:58:56,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5866610d 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 00:58:56,912 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 00:58:56,913 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2025-03-14 00:58:56,927 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 00:58:56,929 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_90-arrayloop2_racing.i that has 3 procedures, 80 locations, 1 initial locations, 18 loop locations, and 2 error locations. [2025-03-14 00:58:56,929 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 00:58:56,989 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-14 00:58:57,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 115 transitions, 250 flow [2025-03-14 00:58:57,084 INFO L124 PetriNetUnfolderBase]: 52/191 cut-off events. [2025-03-14 00:58:57,088 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-14 00:58:57,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 191 events. 52/191 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 786 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2025-03-14 00:58:57,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 115 transitions, 250 flow [2025-03-14 00:58:57,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 115 transitions, 250 flow [2025-03-14 00:58:57,110 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 00:58:57,122 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;@38b0f9f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 00:58:57,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-14 00:58:57,135 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 00:58:57,135 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2025-03-14 00:58:57,135 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 00:58:57,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:58:57,136 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-14 00:58:57,136 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-14 00:58:57,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:58:57,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1852251146, now seen corresponding path program 1 times [2025-03-14 00:58:57,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:58:57,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924035117] [2025-03-14 00:58:57,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:58:57,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:58:57,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-14 00:58:57,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-14 00:58:57,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:58:57,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:58:57,401 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 00:58:57,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:58:57,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924035117] [2025-03-14 00:58:57,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924035117] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:58:57,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:58:57,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 00:58:57,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469459631] [2025-03-14 00:58:57,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:58:57,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:58:57,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:58:57,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:58:57,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:58:57,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-14 00:58:57,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 115 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:58:57,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:58:57,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-14 00:58:57,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:58:58,836 INFO L124 PetriNetUnfolderBase]: 6535/12760 cut-off events. [2025-03-14 00:58:58,837 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2025-03-14 00:58:58,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22456 conditions, 12760 events. 6535/12760 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 102498 event pairs, 5490 based on Foata normal form. 1876/12657 useless extension candidates. Maximal degree in co-relation 21407. Up to 9568 conditions per place. [2025-03-14 00:58:58,929 INFO L140 encePairwiseOnDemand]: 90/115 looper letters, 64 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2025-03-14 00:58:58,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 344 flow [2025-03-14 00:58:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:58:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:58:58,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2025-03-14 00:58:58,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.518840579710145 [2025-03-14 00:58:58,939 INFO L175 Difference]: Start difference. First operand has 86 places, 115 transitions, 250 flow. Second operand 3 states and 179 transitions. [2025-03-14 00:58:58,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 344 flow [2025-03-14 00:58:58,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-14 00:58:58,946 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 218 flow [2025-03-14 00:58:58,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2025-03-14 00:58:58,950 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2025-03-14 00:58:58,950 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 218 flow [2025-03-14 00:58:58,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:58:58,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:58:58,950 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:58:58,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 00:58:58,951 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-14 00:58:58,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:58:58,951 INFO L85 PathProgramCache]: Analyzing trace with hash -44823480, now seen corresponding path program 1 times [2025-03-14 00:58:58,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:58:58,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222414610] [2025-03-14 00:58:58,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:58:58,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:58:58,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-14 00:58:58,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-14 00:58:58,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:58:58,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:58:59,054 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 00:58:59,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:58:59,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222414610] [2025-03-14 00:58:59,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222414610] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 00:58:59,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 00:58:59,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 00:58:59,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198217350] [2025-03-14 00:58:59,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 00:58:59,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 00:58:59,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:58:59,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 00:58:59,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 00:58:59,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-14 00:58:59,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:58:59,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:58:59,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-14 00:58:59,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:59:00,077 INFO L124 PetriNetUnfolderBase]: 6535/12762 cut-off events. [2025-03-14 00:59:00,077 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2025-03-14 00:59:00,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22467 conditions, 12762 events. 6535/12762 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 102482 event pairs, 5490 based on Foata normal form. 2/10788 useless extension candidates. Maximal degree in co-relation 22448. Up to 9571 conditions per place. [2025-03-14 00:59:00,133 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 63 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2025-03-14 00:59:00,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 95 transitions, 350 flow [2025-03-14 00:59:00,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 00:59:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 00:59:00,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2025-03-14 00:59:00,136 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4492753623188406 [2025-03-14 00:59:00,136 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 218 flow. Second operand 3 states and 155 transitions. [2025-03-14 00:59:00,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 95 transitions, 350 flow [2025-03-14 00:59:00,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 95 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 00:59:00,140 INFO L231 Difference]: Finished difference. Result has 91 places, 95 transitions, 230 flow [2025-03-14 00:59:00,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=91, PETRI_TRANSITIONS=95} [2025-03-14 00:59:00,141 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2025-03-14 00:59:00,141 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 95 transitions, 230 flow [2025-03-14 00:59:00,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:59:00,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:59:00,141 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:59:00,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 00:59:00,141 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-14 00:59:00,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:59:00,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1695517373, now seen corresponding path program 1 times [2025-03-14 00:59:00,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:59:00,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140507653] [2025-03-14 00:59:00,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:59:00,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:59:00,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-14 00:59:00,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-14 00:59:00,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:59:00,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:59:00,279 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 00:59:00,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:59:00,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140507653] [2025-03-14 00:59:00,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140507653] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:59:00,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587915326] [2025-03-14 00:59:00,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 00:59:00,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:59:00,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:59:00,283 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 00:59:00,284 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 00:59:00,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-14 00:59:00,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-14 00:59:00,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 00:59:00,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:59:00,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-14 00:59:00,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 00:59:00,452 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 00:59:00,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 00:59:00,473 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 00:59:00,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587915326] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 00:59:00,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 00:59:00,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-14 00:59:00,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012082492] [2025-03-14 00:59:00,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 00:59:00,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-14 00:59:00,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:59:00,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-14 00:59:00,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-14 00:59:00,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-14 00:59:00,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 95 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:59:00,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:59:00,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-14 00:59:00,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:59:01,700 INFO L124 PetriNetUnfolderBase]: 6535/12768 cut-off events. [2025-03-14 00:59:01,701 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2025-03-14 00:59:01,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22495 conditions, 12768 events. 6535/12768 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 102493 event pairs, 5490 based on Foata normal form. 6/10798 useless extension candidates. Maximal degree in co-relation 22455. Up to 9571 conditions per place. [2025-03-14 00:59:01,748 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 63 selfloop transitions, 5 changer transitions 0/98 dead transitions. [2025-03-14 00:59:01,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 98 transitions, 378 flow [2025-03-14 00:59:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 00:59:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 00:59:01,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 250 transitions. [2025-03-14 00:59:01,750 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36231884057971014 [2025-03-14 00:59:01,750 INFO L175 Difference]: Start difference. First operand has 91 places, 95 transitions, 230 flow. Second operand 6 states and 250 transitions. [2025-03-14 00:59:01,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 98 transitions, 378 flow [2025-03-14 00:59:01,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-14 00:59:01,755 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 268 flow [2025-03-14 00:59:01,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2025-03-14 00:59:01,756 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2025-03-14 00:59:01,756 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 268 flow [2025-03-14 00:59:01,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:59:01,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:59:01,757 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 00:59:01,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-14 00:59:01,957 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 00:59:01,958 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-14 00:59:01,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:59:01,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1247546616, now seen corresponding path program 2 times [2025-03-14 00:59:01,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:59:01,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612039049] [2025-03-14 00:59:01,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:59:01,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:59:02,000 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-14 00:59:02,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-14 00:59:02,044 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 00:59:02,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:59:02,177 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 00:59:02,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:59:02,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612039049] [2025-03-14 00:59:02,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612039049] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:59:02,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764774683] [2025-03-14 00:59:02,177 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 00:59:02,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:59:02,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:59:02,180 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 00:59:02,182 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 00:59:02,424 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-14 00:59:02,524 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-14 00:59:02,524 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 00:59:02,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:59:02,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-14 00:59:02,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 00:59:02,570 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 00:59:02,570 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 00:59:02,632 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 00:59:02,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764774683] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 00:59:02,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 00:59:02,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2025-03-14 00:59:02,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851365752] [2025-03-14 00:59:02,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 00:59:02,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-14 00:59:02,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 00:59:02,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-14 00:59:02,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-14 00:59:02,634 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-14 00:59:02,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 268 flow. Second operand has 14 states, 14 states have (on average 31.571428571428573) internal successors, (442), 14 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:59:02,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 00:59:02,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-14 00:59:02,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 00:59:04,409 INFO L124 PetriNetUnfolderBase]: 6536/12793 cut-off events. [2025-03-14 00:59:04,410 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2025-03-14 00:59:04,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22623 conditions, 12793 events. 6536/12793 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 102589 event pairs, 5490 based on Foata normal form. 19/10836 useless extension candidates. Maximal degree in co-relation 22451. Up to 9568 conditions per place. [2025-03-14 00:59:04,584 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 63 selfloop transitions, 36 changer transitions 0/129 dead transitions. [2025-03-14 00:59:04,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 129 transitions, 666 flow [2025-03-14 00:59:04,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-14 00:59:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-14 00:59:04,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1138 transitions. [2025-03-14 00:59:04,594 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29104859335038363 [2025-03-14 00:59:04,594 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 268 flow. Second operand 34 states and 1138 transitions. [2025-03-14 00:59:04,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 129 transitions, 666 flow [2025-03-14 00:59:04,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 129 transitions, 624 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-03-14 00:59:04,600 INFO L231 Difference]: Finished difference. Result has 143 places, 129 transitions, 560 flow [2025-03-14 00:59:04,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=560, PETRI_PLACES=143, PETRI_TRANSITIONS=129} [2025-03-14 00:59:04,602 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 57 predicate places. [2025-03-14 00:59:04,602 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 129 transitions, 560 flow [2025-03-14 00:59:04,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 31.571428571428573) internal successors, (442), 14 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 00:59:04,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 00:59:04,603 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-14 00:59:04,611 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 00:59:04,803 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 00:59:04,803 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-14 00:59:04,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 00:59:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash -79998118, now seen corresponding path program 3 times [2025-03-14 00:59:04,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 00:59:04,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556269761] [2025-03-14 00:59:04,805 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 00:59:04,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 00:59:04,973 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes. [2025-03-14 00:59:12,734 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 31 of 31 statements. [2025-03-14 00:59:12,734 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-14 00:59:12,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 00:59:13,285 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-03-14 00:59:13,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 00:59:13,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556269761] [2025-03-14 00:59:13,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556269761] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 00:59:13,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527853785] [2025-03-14 00:59:13,286 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 00:59:13,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 00:59:13,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 00:59:13,288 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 00:59:13,290 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 00:59:13,611 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes.