./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:29:40,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:29:40,782 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:29:40,787 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:29:40,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:29:40,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:29:40,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:29:40,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:29:40,811 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:29:40,811 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:29:40,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:29:40,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:29:40,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:29:40,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:29:40,811 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:29:40,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:29:40,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:29:40,812 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:29:40,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:29:40,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:29:40,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:29:40,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:29:40,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:29:40,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:29:40,812 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:29:40,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:29:40,812 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:29:40,815 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:29:40,815 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:29:40,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:29:40,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:29:40,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:29:40,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:29:40,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:29:40,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:29:40,816 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:29:40,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:29:40,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:29:40,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:29:40,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:29:40,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:29:40,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:29:40,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:29:40,817 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 [2025-02-06 04:29:41,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:29:41,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:29:41,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:29:41,111 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:29:41,111 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:29:41,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2025-02-06 04:29:42,478 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9b939f092/66b1f9f3037d4e77a3acc8d0ac63648d/FLAG8a1d079cc [2025-02-06 04:29:42,791 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:29:42,792 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2025-02-06 04:29:42,810 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9b939f092/66b1f9f3037d4e77a3acc8d0ac63648d/FLAG8a1d079cc [2025-02-06 04:29:42,823 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9b939f092/66b1f9f3037d4e77a3acc8d0ac63648d [2025-02-06 04:29:42,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:29:42,826 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:29:42,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:29:42,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:29:42,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:29:42,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:29:42" (1/1) ... [2025-02-06 04:29:42,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a01c112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:42, skipping insertion in model container [2025-02-06 04:29:42,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:29:42" (1/1) ... [2025-02-06 04:29:42,867 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:29:43,087 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2025-02-06 04:29:43,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:29:43,124 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:29:43,173 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2025-02-06 04:29:43,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:29:43,224 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:29:43,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43 WrapperNode [2025-02-06 04:29:43,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:29:43,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:29:43,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:29:43,226 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:29:43,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (1/1) ... [2025-02-06 04:29:43,239 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (1/1) ... [2025-02-06 04:29:43,262 INFO L138 Inliner]: procedures = 174, calls = 44, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2025-02-06 04:29:43,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:29:43,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:29:43,264 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:29:43,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:29:43,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (1/1) ... [2025-02-06 04:29:43,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (1/1) ... [2025-02-06 04:29:43,273 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (1/1) ... [2025-02-06 04:29:43,283 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 2, 5, 5, 5]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 5, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0, 0]. [2025-02-06 04:29:43,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (1/1) ... [2025-02-06 04:29:43,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (1/1) ... [2025-02-06 04:29:43,292 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (1/1) ... [2025-02-06 04:29:43,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (1/1) ... [2025-02-06 04:29:43,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (1/1) ... [2025-02-06 04:29:43,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (1/1) ... [2025-02-06 04:29:43,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:29:43,298 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:29:43,298 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:29:43,298 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:29:43,303 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (1/1) ... [2025-02-06 04:29:43,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:29:43,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:29:43,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:29:43,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:29:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:29:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:29:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 04:29:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 04:29:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-06 04:29:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:29:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:29:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 04:29:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 04:29:43,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-06 04:29:43,366 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 04:29:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:29:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 04:29:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 04:29:43,367 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 04:29:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 04:29:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:29:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:29:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 04:29:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 04:29:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-06 04:29:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 04:29:43,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:29:43,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:29:43,368 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:29:43,519 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:29:43,521 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:29:43,769 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L720: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-02-06 04:29:43,769 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L720-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-02-06 04:29:43,805 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:29:43,807 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:29:43,978 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:29:43,979 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:29:43,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:29:43 BoogieIcfgContainer [2025-02-06 04:29:43,980 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:29:43,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:29:43,983 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:29:43,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:29:43,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:29:42" (1/3) ... [2025-02-06 04:29:43,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d94b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:29:43, skipping insertion in model container [2025-02-06 04:29:43,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:29:43" (2/3) ... [2025-02-06 04:29:43,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d94b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:29:43, skipping insertion in model container [2025-02-06 04:29:43,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:29:43" (3/3) ... [2025-02-06 04:29:43,991 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2025-02-06 04:29:44,004 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:29:44,007 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_19-callback_racing.i that has 2 procedures, 45 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2025-02-06 04:29:44,007 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:29:44,056 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-06 04:29:44,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 57 transitions, 121 flow [2025-02-06 04:29:44,161 INFO L124 PetriNetUnfolderBase]: 20/90 cut-off events. [2025-02-06 04:29:44,164 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 04:29:44,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 90 events. 20/90 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 290 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2025-02-06 04:29:44,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 57 transitions, 121 flow [2025-02-06 04:29:44,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 55 transitions, 114 flow [2025-02-06 04:29:44,182 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:29:44,191 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;@7308f0bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:29:44,191 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-06 04:29:44,199 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:29:44,199 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2025-02-06 04:29:44,200 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:29:44,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:29:44,200 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 04:29:44,201 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 04:29:44,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:29:44,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1582425601, now seen corresponding path program 1 times [2025-02-06 04:29:44,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:29:44,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673211465] [2025-02-06 04:29:44,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:29:44,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:29:44,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 04:29:44,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 04:29:44,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:29:44,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 04:29:44,342 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 04:29:44,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 04:29:44,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 04:29:44,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:29:44,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 04:29:44,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 04:29:44,399 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 04:29:44,405 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-02-06 04:29:44,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-02-06 04:29:44,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-02-06 04:29:44,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:29:44,410 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-06 04:29:44,413 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 04:29:44,413 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 04:29:44,436 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 04:29:44,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 77 transitions, 170 flow [2025-02-06 04:29:44,469 INFO L124 PetriNetUnfolderBase]: 33/150 cut-off events. [2025-02-06 04:29:44,470 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2025-02-06 04:29:44,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 150 events. 33/150 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 628 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 94. Up to 9 conditions per place. [2025-02-06 04:29:44,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 77 transitions, 170 flow [2025-02-06 04:29:44,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 77 transitions, 170 flow [2025-02-06 04:29:44,474 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:29:44,474 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;@7308f0bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:29:44,474 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:29:44,484 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:29:44,484 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2025-02-06 04:29:44,484 INFO L125 PetriNetUnfolderBase]: For 3/4 co-relation queries the response was YES. [2025-02-06 04:29:44,484 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:29:44,484 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-02-06 04:29:44,485 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-02-06 04:29:44,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:29:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash 489746276, now seen corresponding path program 1 times [2025-02-06 04:29:44,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:29:44,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118943025] [2025-02-06 04:29:44,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:29:44,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:29:44,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 04:29:44,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 04:29:44,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:29:44,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 04:29:44,521 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 04:29:44,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 04:29:44,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 04:29:44,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:29:44,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 04:29:44,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 04:29:44,557 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 04:29:44,557 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-02-06 04:29:44,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-02-06 04:29:44,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2025-02-06 04:29:44,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-02-06 04:29:44,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:29:44,558 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-06 04:29:44,559 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 04:29:44,559 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-06 04:29:44,587 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 04:29:44,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 97 transitions, 221 flow [2025-02-06 04:29:44,640 INFO L124 PetriNetUnfolderBase]: 49/221 cut-off events. [2025-02-06 04:29:44,641 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2025-02-06 04:29:44,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 221 events. 49/221 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1017 event pairs, 1 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 161. Up to 12 conditions per place. [2025-02-06 04:29:44,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 97 transitions, 221 flow [2025-02-06 04:29:44,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 97 transitions, 221 flow [2025-02-06 04:29:44,651 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:29:44,652 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;@7308f0bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:29:44,652 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-06 04:29:44,670 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:29:44,670 INFO L124 PetriNetUnfolderBase]: 8/81 cut-off events. [2025-02-06 04:29:44,670 INFO L125 PetriNetUnfolderBase]: For 9/11 co-relation queries the response was YES. [2025-02-06 04:29:44,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:29:44,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:29:44,671 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-02-06 04:29:44,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:29:44,671 INFO L85 PathProgramCache]: Analyzing trace with hash 850683039, now seen corresponding path program 1 times [2025-02-06 04:29:44,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:29:44,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017789691] [2025-02-06 04:29:44,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:29:44,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:29:44,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 04:29:44,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 04:29:44,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:29:44,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:29:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:29:44,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:29:44,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017789691] [2025-02-06 04:29:44,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017789691] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:29:44,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:29:44,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:29:44,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235864622] [2025-02-06 04:29:44,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:29:44,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:29:44,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:29:44,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:29:44,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:29:44,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 97 [2025-02-06 04:29:44,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:29:44,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:29:44,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 97 [2025-02-06 04:29:44,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:29:52,043 INFO L124 PetriNetUnfolderBase]: 54674/87275 cut-off events. [2025-02-06 04:29:52,043 INFO L125 PetriNetUnfolderBase]: For 1211/1211 co-relation queries the response was YES. [2025-02-06 04:29:52,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164246 conditions, 87275 events. 54674/87275 cut-off events. For 1211/1211 co-relation queries the response was YES. Maximal size of possible extension queue 1728. Compared 746227 event pairs, 17942 based on Foata normal form. 25737/104768 useless extension candidates. Maximal degree in co-relation 87888. Up to 37812 conditions per place. [2025-02-06 04:29:52,549 INFO L140 encePairwiseOnDemand]: 76/97 looper letters, 145 selfloop transitions, 7 changer transitions 0/184 dead transitions. [2025-02-06 04:29:52,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 184 transitions, 732 flow [2025-02-06 04:29:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:29:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:29:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 359 transitions. [2025-02-06 04:29:52,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7402061855670103 [2025-02-06 04:29:52,569 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 221 flow. Second operand 5 states and 359 transitions. [2025-02-06 04:29:52,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 184 transitions, 732 flow [2025-02-06 04:29:52,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 184 transitions, 732 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:29:52,586 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 241 flow [2025-02-06 04:29:52,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2025-02-06 04:29:52,592 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2025-02-06 04:29:52,592 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 241 flow [2025-02-06 04:29:52,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:29:52,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:29:52,593 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-02-06 04:29:52,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:29:52,593 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-02-06 04:29:52,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:29:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash 207491424, now seen corresponding path program 1 times [2025-02-06 04:29:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:29:52,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676310299] [2025-02-06 04:29:52,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:29:52,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:29:52,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 04:29:52,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 04:29:52,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:29:52,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 04:29:52,637 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 04:29:52,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 04:29:52,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 04:29:52,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:29:52,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 04:29:52,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 04:29:52,673 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 04:29:52,673 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-02-06 04:29:52,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-02-06 04:29:52,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-02-06 04:29:52,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-02-06 04:29:52,674 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-02-06 04:29:52,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:29:52,674 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 04:29:52,676 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 04:29:52,676 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-02-06 04:29:52,709 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 04:29:52,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 117 transitions, 274 flow [2025-02-06 04:29:52,754 INFO L124 PetriNetUnfolderBase]: 73/316 cut-off events. [2025-02-06 04:29:52,758 INFO L125 PetriNetUnfolderBase]: For 48/51 co-relation queries the response was YES. [2025-02-06 04:29:52,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 316 events. 73/316 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1558 event pairs, 6 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 245. Up to 32 conditions per place. [2025-02-06 04:29:52,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 117 transitions, 274 flow [2025-02-06 04:29:52,764 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 117 transitions, 274 flow [2025-02-06 04:29:52,765 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:29:52,766 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;@7308f0bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:29:52,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-06 04:29:52,773 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:29:52,774 INFO L124 PetriNetUnfolderBase]: 8/81 cut-off events. [2025-02-06 04:29:52,774 INFO L125 PetriNetUnfolderBase]: For 12/14 co-relation queries the response was YES. [2025-02-06 04:29:52,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:29:52,774 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:29:52,775 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-02-06 04:29:52,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:29:52,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1340782842, now seen corresponding path program 1 times [2025-02-06 04:29:52,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:29:52,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944971864] [2025-02-06 04:29:52,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:29:52,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:29:52,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 04:29:52,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 04:29:52,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:29:52,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:29:52,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:29:52,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:29:52,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944971864] [2025-02-06 04:29:52,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944971864] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:29:52,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:29:52,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:29:52,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315070913] [2025-02-06 04:29:52,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:29:52,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:29:52,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:29:52,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:29:52,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:29:52,889 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 117 [2025-02-06 04:29:52,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 117 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:29:52,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:29:52,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 117 [2025-02-06 04:29:52,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand