./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 8fc3dc66 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-?-8fc3dc6-m [2025-03-17 06:34:36,505 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:34:36,571 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:34:36,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:34:36,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:34:36,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:34:36,603 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:34:36,603 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:34:36,603 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:34:36,603 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:34:36,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:34:36,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:34:36,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:34:36,604 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:34:36,604 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:34:36,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:34:36,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:34:36,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:34:36,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:34:36,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:34:36,606 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:34:36,606 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:34:36,606 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:34:36,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:34:36,606 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:34:36,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:34:36,607 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:34:36,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:34:36,607 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 [2025-03-17 06:34:36,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:34:36,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:34:36,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:34:36,856 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:34:36,856 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:34:36,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2025-03-17 06:34:38,105 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b256c4247/9bf9e1a48f4c46a7820e028495f1e65f/FLAGf653108b8 [2025-03-17 06:34:38,412 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:34:38,414 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2025-03-17 06:34:38,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b256c4247/9bf9e1a48f4c46a7820e028495f1e65f/FLAGf653108b8 [2025-03-17 06:34:38,667 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b256c4247/9bf9e1a48f4c46a7820e028495f1e65f [2025-03-17 06:34:38,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:34:38,670 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:34:38,671 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:34:38,672 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:34:38,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:34:38,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:34:38" (1/1) ... [2025-03-17 06:34:38,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d2b5f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:38, skipping insertion in model container [2025-03-17 06:34:38,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:34:38" (1/1) ... [2025-03-17 06:34:38,704 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:34:38,972 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] [2025-03-17 06:34:38,988 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-17 06:34:38,989 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-17 06:34:38,989 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-17 06:34:38,990 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-17 06:34:39,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:34:39,063 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:34:39,095 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] [2025-03-17 06:34:39,097 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-17 06:34:39,097 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-17 06:34:39,098 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-17 06:34:39,098 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-17 06:34:39,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:34:39,158 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:34:39,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39 WrapperNode [2025-03-17 06:34:39,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:34:39,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:34:39,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:34:39,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:34:39,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (1/1) ... [2025-03-17 06:34:39,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (1/1) ... [2025-03-17 06:34:39,199 INFO L138 Inliner]: procedures = 280, calls = 142, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 354 [2025-03-17 06:34:39,200 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:34:39,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:34:39,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:34:39,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:34:39,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (1/1) ... [2025-03-17 06:34:39,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (1/1) ... [2025-03-17 06:34:39,210 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (1/1) ... [2025-03-17 06:34:39,230 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]. [2025-03-17 06:34:39,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (1/1) ... [2025-03-17 06:34:39,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (1/1) ... [2025-03-17 06:34:39,243 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (1/1) ... [2025-03-17 06:34:39,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (1/1) ... [2025-03-17 06:34:39,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (1/1) ... [2025-03-17 06:34:39,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (1/1) ... [2025-03-17 06:34:39,252 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:34:39,252 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:34:39,252 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:34:39,253 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:34:39,253 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (1/1) ... [2025-03-17 06:34:39,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:34:39,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:34:39,286 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) [2025-03-17 06:34:39,290 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 [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-03-17 06:34:39,311 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 06:34:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-03-17 06:34:39,312 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 06:34:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:34:39,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:34:39,314 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:34:39,467 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:34:39,468 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:34:39,887 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2025-03-17 06:34:39,887 INFO L1322 $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 [2025-03-17 06:34:39,888 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082-2: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2025-03-17 06:34:39,888 INFO L1322 $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 [2025-03-17 06:34:39,889 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:34:39,889 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:34:40,350 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:34:40,350 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:34:40,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:34:40 BoogieIcfgContainer [2025-03-17 06:34:40,350 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:34:40,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:34:40,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:34:40,356 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:34:40,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:34:38" (1/3) ... [2025-03-17 06:34:40,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6807fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:34:40, skipping insertion in model container [2025-03-17 06:34:40,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:39" (2/3) ... [2025-03-17 06:34:40,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6807fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:34:40, skipping insertion in model container [2025-03-17 06:34:40,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:34:40" (3/3) ... [2025-03-17 06:34:40,358 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2025-03-17 06:34:40,371 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:34:40,373 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. [2025-03-17 06:34:40,373 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:34:40,434 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-17 06:34:40,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 115 transitions, 250 flow [2025-03-17 06:34:40,529 INFO L124 PetriNetUnfolderBase]: 52/191 cut-off events. [2025-03-17 06:34:40,532 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-17 06:34:40,538 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 776 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. [2025-03-17 06:34:40,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 115 transitions, 250 flow [2025-03-17 06:34:40,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 115 transitions, 250 flow [2025-03-17 06:34:40,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:34:40,581 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;@72512f26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:34:40,581 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-17 06:34:40,594 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:34:40,594 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2025-03-17 06:34:40,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:34:40,594 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:34:40,595 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-17 06:34:40,595 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-17 06:34:40,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:34:40,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1194141293, now seen corresponding path program 1 times [2025-03-17 06:34:40,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:34:40,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128398645] [2025-03-17 06:34:40,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:34:40,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:34:40,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 06:34:40,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 06:34:40,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:34:40,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:34:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:34:40,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:34:40,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128398645] [2025-03-17 06:34:40,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128398645] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:34:40,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:34:40,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:34:40,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69022604] [2025-03-17 06:34:40,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:34:40,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:34:40,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:34:40,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:34:40,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:34:40,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-17 06:34:40,951 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) [2025-03-17 06:34:40,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:34:40,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-17 06:34:40,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:34:42,539 INFO L124 PetriNetUnfolderBase]: 6535/12775 cut-off events. [2025-03-17 06:34:42,540 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2025-03-17 06:34:42,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22471 conditions, 12775 events. 6535/12775 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 102576 event pairs, 5490 based on Foata normal form. 1876/12667 useless extension candidates. Maximal degree in co-relation 21419. Up to 9568 conditions per place. [2025-03-17 06:34:42,633 INFO L140 encePairwiseOnDemand]: 90/115 looper letters, 64 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2025-03-17 06:34:42,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 344 flow [2025-03-17 06:34:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:34:42,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:34:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2025-03-17 06:34:42,647 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.518840579710145 [2025-03-17 06:34:42,648 INFO L175 Difference]: Start difference. First operand has 86 places, 115 transitions, 250 flow. Second operand 3 states and 179 transitions. [2025-03-17 06:34:42,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 344 flow [2025-03-17 06:34:42,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 06:34:42,658 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 218 flow [2025-03-17 06:34:42,661 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} [2025-03-17 06:34:42,664 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2025-03-17 06:34:42,665 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 218 flow [2025-03-17 06:34:42,666 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) [2025-03-17 06:34:42,666 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:34:42,666 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:34:42,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:34:42,668 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-17 06:34:42,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:34:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash 94713286, now seen corresponding path program 1 times [2025-03-17 06:34:42,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:34:42,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619406547] [2025-03-17 06:34:42,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:34:42,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:34:42,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 06:34:42,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 06:34:42,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:34:42,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:34:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:34:42,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:34:42,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619406547] [2025-03-17 06:34:42,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619406547] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:34:42,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:34:42,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 06:34:42,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212024812] [2025-03-17 06:34:42,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:34:42,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:34:42,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:34:42,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:34:42,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:34:42,814 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-17 06:34:42,815 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) [2025-03-17 06:34:42,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:34:42,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-17 06:34:42,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:34:43,838 INFO L124 PetriNetUnfolderBase]: 6535/12777 cut-off events. [2025-03-17 06:34:43,839 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2025-03-17 06:34:43,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22482 conditions, 12777 events. 6535/12777 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 102595 event pairs, 5490 based on Foata normal form. 2/10798 useless extension candidates. Maximal degree in co-relation 22463. Up to 9571 conditions per place. [2025-03-17 06:34:43,906 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 63 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2025-03-17 06:34:43,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 95 transitions, 350 flow [2025-03-17 06:34:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:34:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:34:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2025-03-17 06:34:43,908 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4492753623188406 [2025-03-17 06:34:43,908 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 218 flow. Second operand 3 states and 155 transitions. [2025-03-17 06:34:43,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 95 transitions, 350 flow [2025-03-17 06:34:43,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 95 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 06:34:43,911 INFO L231 Difference]: Finished difference. Result has 91 places, 95 transitions, 230 flow [2025-03-17 06:34:43,912 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} [2025-03-17 06:34:43,912 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2025-03-17 06:34:43,913 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 95 transitions, 230 flow [2025-03-17 06:34:43,913 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) [2025-03-17 06:34:43,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:34:43,913 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:34:43,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:34:43,913 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-17 06:34:43,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:34:43,914 INFO L85 PathProgramCache]: Analyzing trace with hash -834570715, now seen corresponding path program 1 times [2025-03-17 06:34:43,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:34:43,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275225715] [2025-03-17 06:34:43,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:34:43,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:34:43,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 06:34:43,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 06:34:43,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:34:43,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:34:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:34:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:34:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275225715] [2025-03-17 06:34:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275225715] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:34:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745362001] [2025-03-17 06:34:44,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:34:44,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:34:44,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:34:44,122 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) [2025-03-17 06:34:44,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:34:44,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 06:34:44,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 06:34:44,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:34:44,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:34:44,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 06:34:44,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:34:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:34:44,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:34:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:34:44,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745362001] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:34:44,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:34:44,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-17 06:34:44,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683528496] [2025-03-17 06:34:44,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:34:44,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:34:44,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:34:44,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:34:44,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:34:44,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-17 06:34:44,342 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) [2025-03-17 06:34:44,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:34:44,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-17 06:34:44,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:34:45,645 INFO L124 PetriNetUnfolderBase]: 6535/12783 cut-off events. [2025-03-17 06:34:45,645 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2025-03-17 06:34:45,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22510 conditions, 12783 events. 6535/12783 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 102598 event pairs, 5490 based on Foata normal form. 6/10808 useless extension candidates. Maximal degree in co-relation 22470. Up to 9571 conditions per place. [2025-03-17 06:34:45,691 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 63 selfloop transitions, 5 changer transitions 0/98 dead transitions. [2025-03-17 06:34:45,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 98 transitions, 378 flow [2025-03-17 06:34:45,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:34:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:34:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 250 transitions. [2025-03-17 06:34:45,694 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36231884057971014 [2025-03-17 06:34:45,694 INFO L175 Difference]: Start difference. First operand has 91 places, 95 transitions, 230 flow. Second operand 6 states and 250 transitions. [2025-03-17 06:34:45,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 98 transitions, 378 flow [2025-03-17 06:34:45,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-17 06:34:45,699 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 268 flow [2025-03-17 06:34:45,699 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} [2025-03-17 06:34:45,700 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2025-03-17 06:34:45,700 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 268 flow [2025-03-17 06:34:45,701 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) [2025-03-17 06:34:45,701 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:34:45,701 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:34:45,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 06:34:45,901 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 [2025-03-17 06:34:45,902 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-17 06:34:45,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:34:45,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1793185158, now seen corresponding path program 2 times [2025-03-17 06:34:45,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:34:45,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247186460] [2025-03-17 06:34:45,903 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:34:45,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:34:45,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-17 06:34:46,007 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 06:34:46,007 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:34:46,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:34:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-17 06:34:46,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:34:46,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247186460] [2025-03-17 06:34:46,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247186460] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:34:46,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571128500] [2025-03-17 06:34:46,147 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:34:46,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:34:46,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:34:46,159 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) [2025-03-17 06:34:46,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:34:46,343 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-17 06:34:46,418 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 06:34:46,418 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:34:46,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:34:46,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 06:34:46,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:34:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:34:46,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:34:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:34:46,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571128500] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:34:46,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:34:46,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2025-03-17 06:34:46,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192642987] [2025-03-17 06:34:46,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:34:46,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 06:34:46,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:34:46,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 06:34:46,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-17 06:34:46,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 115 [2025-03-17 06:34:46,525 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) [2025-03-17 06:34:46,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:34:46,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 115 [2025-03-17 06:34:46,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:34:48,599 INFO L124 PetriNetUnfolderBase]: 6536/12808 cut-off events. [2025-03-17 06:34:48,599 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2025-03-17 06:34:48,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22638 conditions, 12808 events. 6536/12808 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 102687 event pairs, 5490 based on Foata normal form. 19/10846 useless extension candidates. Maximal degree in co-relation 22466. Up to 9568 conditions per place. [2025-03-17 06:34:48,659 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 63 selfloop transitions, 36 changer transitions 0/129 dead transitions. [2025-03-17 06:34:48,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 129 transitions, 666 flow [2025-03-17 06:34:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-17 06:34:48,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-17 06:34:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1138 transitions. [2025-03-17 06:34:48,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29104859335038363 [2025-03-17 06:34:48,663 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 268 flow. Second operand 34 states and 1138 transitions. [2025-03-17 06:34:48,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 129 transitions, 666 flow [2025-03-17 06:34:48,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 129 transitions, 624 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-03-17 06:34:48,667 INFO L231 Difference]: Finished difference. Result has 143 places, 129 transitions, 560 flow [2025-03-17 06:34:48,667 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} [2025-03-17 06:34:48,667 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 57 predicate places. [2025-03-17 06:34:48,668 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 129 transitions, 560 flow [2025-03-17 06:34:48,668 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) [2025-03-17 06:34:48,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:34:48,668 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 06:34:48,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 06:34:48,868 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 [2025-03-17 06:34:48,869 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-17 06:34:48,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:34:48,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1169482809, now seen corresponding path program 3 times [2025-03-17 06:34:48,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:34:48,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111899656] [2025-03-17 06:34:48,871 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:34:48,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:34:49,128 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes. [2025-03-17 06:35:01,369 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 06:35:01,370 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-17 06:35:01,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:35:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-03-17 06:35:01,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:35:01,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111899656] [2025-03-17 06:35:01,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111899656] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:35:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893843228] [2025-03-17 06:35:01,675 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:35:01,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:35:01,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:35:01,677 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) [2025-03-17 06:35:01,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:35:02,080 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes.