./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 f8ab0bd5 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-?-f8ab0bd-m [2025-03-13 21:40:05,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:40:05,731 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:40:05,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:40:05,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:40:05,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:40:05,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:40:05,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:40:05,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:40:05,759 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:40:05,759 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:40:05,759 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:40:05,759 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:40:05,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:40:05,760 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:40:05,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:40:05,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:40:05,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:40:05,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:40:05,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:40:05,761 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:40:05,761 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:40:05,761 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:40:05,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:40:05,761 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:40:05,761 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:40:05,761 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:40:05,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:40:05,761 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 [2025-03-13 21:40:06,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:40:06,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:40:06,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:40:06,026 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:40:06,026 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:40:06,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2025-03-13 21:40:07,129 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdfa8ff60/4cc13ebb976f4982af1a9c6015693994/FLAGbf4cdf9ea [2025-03-13 21:40:07,421 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:40:07,422 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2025-03-13 21:40:07,436 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdfa8ff60/4cc13ebb976f4982af1a9c6015693994/FLAGbf4cdf9ea [2025-03-13 21:40:07,694 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdfa8ff60/4cc13ebb976f4982af1a9c6015693994 [2025-03-13 21:40:07,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:40:07,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:40:07,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:40:07,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:40:07,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:40:07,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:40:07" (1/1) ... [2025-03-13 21:40:07,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e42fd9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:07, skipping insertion in model container [2025-03-13 21:40:07,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:40:07" (1/1) ... [2025-03-13 21:40:07,742 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:40:08,090 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] [2025-03-13 21:40:08,097 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,097 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,098 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,098 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:40:08,157 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:40:08,194 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] [2025-03-13 21:40:08,201 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,201 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,201 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,201 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:40:08,258 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:40:08,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08 WrapperNode [2025-03-13 21:40:08,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:40:08,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:40:08,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:40:08,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:40:08,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,297 INFO L138 Inliner]: procedures = 280, calls = 142, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 354 [2025-03-13 21:40:08,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:40:08,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:40:08,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:40:08,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:40:08,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,311 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,326 INFO L175 MemorySlicer]: Split 105 memory accesses to 5 slices as follows [2, 5, 2, 94, 2]. 90 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 0, 70, 0]. The 15 writes are split as follows [0, 0, 1, 13, 1]. [2025-03-13 21:40:08,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,337 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,338 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:40:08,352 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:40:08,352 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:40:08,352 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:40:08,353 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:40:08,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:40:08,377 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) [2025-03-13 21:40:08,385 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 [2025-03-13 21:40:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-13 21:40:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-13 21:40:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-13 21:40:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-13 21:40:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-03-13 21:40:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-03-13 21:40:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-13 21:40:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:40:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-13 21:40:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-13 21:40:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-13 21:40:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-13 21:40:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-13 21:40:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:40:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-13 21:40:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-13 21:40:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-13 21:40:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-13 21:40:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:40:08,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:40:08,403 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:40:08,537 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:40:08,538 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:40:08,990 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2025-03-13 21:40:08,992 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 [2025-03-13 21:40:08,992 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082-2: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2025-03-13 21:40:08,992 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 [2025-03-13 21:40:08,993 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:40:08,995 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:40:08,995 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:40:09,506 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:40:09,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:40:09 BoogieIcfgContainer [2025-03-13 21:40:09,506 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:40:09,510 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:40:09,510 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:40:09,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:40:09,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:40:07" (1/3) ... [2025-03-13 21:40:09,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a07dac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:40:09, skipping insertion in model container [2025-03-13 21:40:09,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (2/3) ... [2025-03-13 21:40:09,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a07dac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:40:09, skipping insertion in model container [2025-03-13 21:40:09,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:40:09" (3/3) ... [2025-03-13 21:40:09,515 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2025-03-13 21:40:09,527 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:40:09,530 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. [2025-03-13 21:40:09,530 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:40:09,592 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-13 21:40:09,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 115 transitions, 250 flow [2025-03-13 21:40:09,680 INFO L124 PetriNetUnfolderBase]: 52/191 cut-off events. [2025-03-13 21:40:09,686 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-13 21:40:09,691 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. [2025-03-13 21:40:09,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 115 transitions, 250 flow [2025-03-13 21:40:09,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 115 transitions, 250 flow [2025-03-13 21:40:09,704 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:40:09,716 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;@766594c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:40:09,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-13 21:40:09,731 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:40:09,732 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2025-03-13 21:40:09,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:40:09,732 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:40:09,733 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-13 21:40:09,733 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)] === [2025-03-13 21:40:09,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:40:09,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1852251146, now seen corresponding path program 1 times [2025-03-13 21:40:09,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:40:09,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079351888] [2025-03-13 21:40:09,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:40:09,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:40:09,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-13 21:40:09,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-13 21:40:09,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:40:09,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:10,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:40:10,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079351888] [2025-03-13 21:40:10,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079351888] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:40:10,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:40:10,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 21:40:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943369712] [2025-03-13 21:40:10,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:40:10,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:40:10,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:40:10,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:40:10,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:40:10,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-13 21:40:10,045 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) [2025-03-13 21:40:10,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:40:10,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-13 21:40:10,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:40:11,429 INFO L124 PetriNetUnfolderBase]: 6535/12760 cut-off events. [2025-03-13 21:40:11,430 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2025-03-13 21:40:11,450 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. [2025-03-13 21:40:11,493 INFO L140 encePairwiseOnDemand]: 90/115 looper letters, 64 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2025-03-13 21:40:11,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 344 flow [2025-03-13 21:40:11,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:40:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:40:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2025-03-13 21:40:11,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.518840579710145 [2025-03-13 21:40:11,502 INFO L175 Difference]: Start difference. First operand has 86 places, 115 transitions, 250 flow. Second operand 3 states and 179 transitions. [2025-03-13 21:40:11,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 344 flow [2025-03-13 21:40:11,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 21:40:11,509 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 218 flow [2025-03-13 21:40:11,511 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} [2025-03-13 21:40:11,515 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2025-03-13 21:40:11,515 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 218 flow [2025-03-13 21:40:11,515 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) [2025-03-13 21:40:11,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:40:11,515 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:40:11,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:40:11,516 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)] === [2025-03-13 21:40:11,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:40:11,516 INFO L85 PathProgramCache]: Analyzing trace with hash -44823480, now seen corresponding path program 1 times [2025-03-13 21:40:11,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:40:11,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637226275] [2025-03-13 21:40:11,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:40:11,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:40:11,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-13 21:40:11,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-13 21:40:11,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:40:11,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:11,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:40:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637226275] [2025-03-13 21:40:11,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637226275] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:40:11,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:40:11,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 21:40:11,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915522108] [2025-03-13 21:40:11,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:40:11,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:40:11,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:40:11,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:40:11,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:40:11,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-13 21:40:11,667 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) [2025-03-13 21:40:11,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:40:11,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-13 21:40:11,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:40:12,659 INFO L124 PetriNetUnfolderBase]: 6535/12762 cut-off events. [2025-03-13 21:40:12,659 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2025-03-13 21:40:12,703 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. [2025-03-13 21:40:12,757 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 63 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2025-03-13 21:40:12,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 95 transitions, 350 flow [2025-03-13 21:40:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:40:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:40:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2025-03-13 21:40:12,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4492753623188406 [2025-03-13 21:40:12,761 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 218 flow. Second operand 3 states and 155 transitions. [2025-03-13 21:40:12,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 95 transitions, 350 flow [2025-03-13 21:40:12,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 95 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-13 21:40:12,764 INFO L231 Difference]: Finished difference. Result has 91 places, 95 transitions, 230 flow [2025-03-13 21:40:12,765 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} [2025-03-13 21:40:12,766 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2025-03-13 21:40:12,766 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 95 transitions, 230 flow [2025-03-13 21:40:12,766 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) [2025-03-13 21:40:12,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:40:12,766 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:40:12,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:40:12,766 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)] === [2025-03-13 21:40:12,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:40:12,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1695517373, now seen corresponding path program 1 times [2025-03-13 21:40:12,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:40:12,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768928368] [2025-03-13 21:40:12,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:40:12,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:40:12,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-13 21:40:12,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-13 21:40:12,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:40:12,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:12,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:40:12,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768928368] [2025-03-13 21:40:12,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768928368] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:40:12,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119700236] [2025-03-13 21:40:12,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:40:12,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:40:12,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:40:12,918 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) [2025-03-13 21:40:12,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-13 21:40:13,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-13 21:40:13,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-13 21:40:13,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:40:13,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:13,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-13 21:40:13,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:40:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:13,096 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:40:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:13,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119700236] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:40:13,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:40:13,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-13 21:40:13,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762540520] [2025-03-13 21:40:13,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:40:13,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:40:13,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:40:13,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:40:13,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:40:13,117 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-13 21:40:13,117 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) [2025-03-13 21:40:13,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:40:13,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-13 21:40:13,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:40:14,240 INFO L124 PetriNetUnfolderBase]: 6535/12768 cut-off events. [2025-03-13 21:40:14,241 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2025-03-13 21:40:14,254 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. [2025-03-13 21:40:14,286 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 63 selfloop transitions, 5 changer transitions 0/98 dead transitions. [2025-03-13 21:40:14,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 98 transitions, 378 flow [2025-03-13 21:40:14,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:40:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:40:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 250 transitions. [2025-03-13 21:40:14,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36231884057971014 [2025-03-13 21:40:14,290 INFO L175 Difference]: Start difference. First operand has 91 places, 95 transitions, 230 flow. Second operand 6 states and 250 transitions. [2025-03-13 21:40:14,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 98 transitions, 378 flow [2025-03-13 21:40:14,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-13 21:40:14,294 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 268 flow [2025-03-13 21:40:14,294 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} [2025-03-13 21:40:14,295 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2025-03-13 21:40:14,295 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 268 flow [2025-03-13 21:40:14,295 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) [2025-03-13 21:40:14,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:40:14,295 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:40:14,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-13 21:40:14,500 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 [2025-03-13 21:40:14,500 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)] === [2025-03-13 21:40:14,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:40:14,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1247546616, now seen corresponding path program 2 times [2025-03-13 21:40:14,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:40:14,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395896670] [2025-03-13 21:40:14,502 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:40:14,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:40:14,555 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-13 21:40:14,588 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-13 21:40:14,588 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:40:14,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-13 21:40:14,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:40:14,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395896670] [2025-03-13 21:40:14,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395896670] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:40:14,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949054760] [2025-03-13 21:40:14,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:40:14,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:40:14,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:40:14,719 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) [2025-03-13 21:40:14,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-13 21:40:14,860 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-13 21:40:14,931 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-13 21:40:14,932 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:40:14,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:14,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-13 21:40:14,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:40:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:14,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:40:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:15,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949054760] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:40:15,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:40:15,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2025-03-13 21:40:15,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995659924] [2025-03-13 21:40:15,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:40:15,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-13 21:40:15,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:40:15,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-13 21:40:15,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-13 21:40:15,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-13 21:40:15,032 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) [2025-03-13 21:40:15,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:40:15,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-13 21:40:15,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:40:16,588 INFO L124 PetriNetUnfolderBase]: 6536/12793 cut-off events. [2025-03-13 21:40:16,588 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2025-03-13 21:40:16,605 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. [2025-03-13 21:40:16,639 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 63 selfloop transitions, 36 changer transitions 0/129 dead transitions. [2025-03-13 21:40:16,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 129 transitions, 666 flow [2025-03-13 21:40:16,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-13 21:40:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-13 21:40:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1138 transitions. [2025-03-13 21:40:16,644 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29104859335038363 [2025-03-13 21:40:16,644 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 268 flow. Second operand 34 states and 1138 transitions. [2025-03-13 21:40:16,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 129 transitions, 666 flow [2025-03-13 21:40:16,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 129 transitions, 624 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-03-13 21:40:16,648 INFO L231 Difference]: Finished difference. Result has 143 places, 129 transitions, 560 flow [2025-03-13 21:40:16,648 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} [2025-03-13 21:40:16,648 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 57 predicate places. [2025-03-13 21:40:16,649 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 129 transitions, 560 flow [2025-03-13 21:40:16,649 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) [2025-03-13 21:40:16,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:40:16,649 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-13 21:40:16,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-13 21:40:16,849 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 [2025-03-13 21:40:16,850 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)] === [2025-03-13 21:40:16,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:40:16,851 INFO L85 PathProgramCache]: Analyzing trace with hash -79998118, now seen corresponding path program 3 times [2025-03-13 21:40:16,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:40:16,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238469768] [2025-03-13 21:40:16,851 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:40:16,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:40:17,006 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes. [2025-03-13 21:40:22,684 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 31 of 31 statements. [2025-03-13 21:40:22,684 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-13 21:40:22,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-03-13 21:40:23,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:40:23,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238469768] [2025-03-13 21:40:23,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238469768] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:40:23,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227272055] [2025-03-13 21:40:23,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:40:23,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:40:23,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:40:23,237 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) [2025-03-13 21:40:23,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-13 21:40:23,589 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes.