/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 17:28:00,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 17:28:00,177 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 17:28:00,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 17:28:00,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 17:28:00,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 17:28:00,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 17:28:00,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 17:28:00,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 17:28:00,199 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 17:28:00,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 17:28:00,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 17:28:00,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 17:28:00,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 17:28:00,201 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 17:28:00,201 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 17:28:00,201 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 17:28:00,201 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 17:28:00,202 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 17:28:00,202 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 17:28:00,202 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 17:28:00,202 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 17:28:00,202 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 17:28:00,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 17:28:00,202 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 17:28:00,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 17:28:00,202 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 17:28:00,202 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 17:28:00,202 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 17:28:00,202 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:28:00,203 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:28:00,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 17:28:00,203 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA [2025-04-13 17:28:00,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 17:28:00,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 17:28:00,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 17:28:00,474 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 17:28:00,476 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 17:28:00,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2025-04-13 17:28:01,755 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c209a158/67e0e2c3b964474f83b4975ca8cf81f4/FLAG450ce6f88 [2025-04-13 17:28:02,039 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 17:28:02,040 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2025-04-13 17:28:02,056 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c209a158/67e0e2c3b964474f83b4975ca8cf81f4/FLAG450ce6f88 [2025-04-13 17:28:02,756 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c209a158/67e0e2c3b964474f83b4975ca8cf81f4 [2025-04-13 17:28:02,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 17:28:02,759 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 17:28:02,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 17:28:02,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 17:28:02,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 17:28:02,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:28:02" (1/1) ... [2025-04-13 17:28:02,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ded4e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:02, skipping insertion in model container [2025-04-13 17:28:02,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:28:02" (1/1) ... [2025-04-13 17:28:02,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 17:28:03,020 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2025-04-13 17:28:03,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:28:03,054 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 17:28:03,087 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2025-04-13 17:28:03,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:28:03,126 INFO L204 MainTranslator]: Completed translation [2025-04-13 17:28:03,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03 WrapperNode [2025-04-13 17:28:03,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 17:28:03,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 17:28:03,128 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 17:28:03,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 17:28:03,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,162 INFO L138 Inliner]: procedures = 174, calls = 44, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2025-04-13 17:28:03,163 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 17:28:03,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 17:28:03,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 17:28:03,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 17:28:03,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,172 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,182 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2025-04-13 17:28:03,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,187 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 17:28:03,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 17:28:03,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 17:28:03,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 17:28:03,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (1/1) ... [2025-04-13 17:28:03,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:28:03,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:28:03,218 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) [2025-04-13 17:28:03,220 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 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-13 17:28:03,235 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 17:28:03,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-13 17:28:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-04-13 17:28:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 17:28:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 17:28:03,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 17:28:03,237 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 17:28:03,353 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 17:28:03,354 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 17:28:03,536 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 17:28:03,536 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 17:28:03,537 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 17:28:03,692 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:28:03,713 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:28:03,714 WARN L179 LargeBlockEncoding]: Complex 4:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:28:03,726 WARN L179 LargeBlockEncoding]: Complex 3:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:28:03,727 WARN L179 LargeBlockEncoding]: Complex 5:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:28:03,734 INFO L313 CfgBuilder]: Removed 4 assume(true) statements. [2025-04-13 17:28:03,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:28:03 BoogieIcfgContainer [2025-04-13 17:28:03,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 17:28:03,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 17:28:03,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 17:28:03,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 17:28:03,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 05:28:02" (1/3) ... [2025-04-13 17:28:03,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b53388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:28:03, skipping insertion in model container [2025-04-13 17:28:03,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:28:03" (2/3) ... [2025-04-13 17:28:03,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b53388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:28:03, skipping insertion in model container [2025-04-13 17:28:03,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:28:03" (3/3) ... [2025-04-13 17:28:03,740 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2025-04-13 17:28:03,750 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 17:28:03,751 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_19-callback_racing.i that has 2 procedures, 29 locations, 49 edges, 1 initial locations, 7 loop locations, and 1 error locations. [2025-04-13 17:28:03,751 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 17:28:03,784 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-04-13 17:28:03,807 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 54 transitions, 115 flow [2025-04-13 17:28:03,837 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 155 states, 151 states have (on average 2.834437086092715) internal successors, (428), 154 states have internal predecessors, (428), 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) [2025-04-13 17:28:03,858 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:28:03,867 INFO L340 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=FINITE_AUTOMATA, 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;@6a57dd71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:28:03,868 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 17:28:03,871 INFO L278 IsEmpty]: Start isEmpty. Operand has 155 states, 151 states have (on average 2.834437086092715) internal successors, (428), 154 states have internal predecessors, (428), 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) [2025-04-13 17:28:03,874 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-13 17:28:03,874 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:28:03,875 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-13 17:28:03,875 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-13 17:28:03,879 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:28:03,880 INFO L85 PathProgramCache]: Analyzing trace with hash 14119678, now seen corresponding path program 1 times [2025-04-13 17:28:03,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:28:03,886 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416406842] [2025-04-13 17:28:03,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:28:03,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:28:03,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 17:28:03,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 17:28:03,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:28:03,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 17:28:03,981 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 17:28:03,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 17:28:04,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 17:28:04,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:28:04,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 17:28:04,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 17:28:04,022 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 17:28:04,024 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-04-13 17:28:04,025 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-04-13 17:28:04,025 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-04-13 17:28:04,026 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 17:28:04,028 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 17:28:04,031 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 17:28:04,031 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 17:28:04,050 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 17:28:04,054 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 68 transitions, 152 flow [2025-04-13 17:28:04,146 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2219 states, 2207 states have (on average 3.8975985500679657) internal successors, (8602), 2218 states have internal predecessors, (8602), 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) [2025-04-13 17:28:04,148 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:28:04,149 INFO L340 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=FINITE_AUTOMATA, 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;@6a57dd71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:28:04,149 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 17:28:04,157 INFO L278 IsEmpty]: Start isEmpty. Operand has 2219 states, 2207 states have (on average 3.8975985500679657) internal successors, (8602), 2218 states have internal predecessors, (8602), 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) [2025-04-13 17:28:04,158 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-04-13 17:28:04,158 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:28:04,159 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2025-04-13 17:28:04,159 INFO L403 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)] === [2025-04-13 17:28:04,159 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:28:04,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1588074741, now seen corresponding path program 1 times [2025-04-13 17:28:04,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:28:04,159 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980469159] [2025-04-13 17:28:04,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:28:04,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:28:04,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 17:28:04,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 17:28:04,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:28:04,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 17:28:04,190 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 17:28:04,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 17:28:04,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 17:28:04,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:28:04,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 17:28:04,228 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 17:28:04,228 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 17:28:04,228 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-13 17:28:04,228 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-13 17:28:04,229 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2025-04-13 17:28:04,229 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 17:28:04,229 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 17:28:04,229 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 17:28:04,229 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 17:28:04,229 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 17:28:04,267 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-13 17:28:04,271 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 82 transitions, 191 flow [2025-04-13 17:28:05,134 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26459 states, 26425 states have (on average 4.956367076631977) internal successors, (130972), 26458 states have internal predecessors, (130972), 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) [2025-04-13 17:28:05,136 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:28:05,136 INFO L340 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=FINITE_AUTOMATA, 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;@6a57dd71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:28:05,136 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 17:28:05,253 INFO L278 IsEmpty]: Start isEmpty. Operand has 26459 states, 26425 states have (on average 4.956367076631977) internal successors, (130972), 26458 states have internal predecessors, (130972), 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) [2025-04-13 17:28:05,259 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-04-13 17:28:05,259 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:28:05,259 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:28:05,259 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-13 17:28:05,259 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:28:05,259 INFO L85 PathProgramCache]: Analyzing trace with hash 591695671, now seen corresponding path program 1 times [2025-04-13 17:28:05,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:28:05,260 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684697850] [2025-04-13 17:28:05,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:28:05,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:28:05,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-13 17:28:05,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-13 17:28:05,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:28:05,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:28:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:28:05,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:28:05,395 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684697850] [2025-04-13 17:28:05,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684697850] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:28:05,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:28:05,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 17:28:05,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339629265] [2025-04-13 17:28:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:28:05,399 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 17:28:05,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:28:05,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 17:28:05,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 17:28:05,475 INFO L87 Difference]: Start difference. First operand has 26459 states, 26425 states have (on average 4.956367076631977) internal successors, (130972), 26458 states have internal predecessors, (130972), 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) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-04-13 17:28:07,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:28:07,039 INFO L93 Difference]: Finished difference Result 68696 states and 343581 transitions. [2025-04-13 17:28:07,040 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 17:28:07,041 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2025-04-13 17:28:07,041 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:28:07,514 INFO L225 Difference]: With dead ends: 68696 [2025-04-13 17:28:07,514 INFO L226 Difference]: Without dead ends: 37213 [2025-04-13 17:28:07,581 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 17:28:07,584 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:28:07,584 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 13 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:28:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37213 states. [2025-04-13 17:28:08,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37213 to 35715. [2025-04-13 17:28:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35715 states, 35695 states have (on average 3.7221459588177614) internal successors, (132862), 35714 states have internal predecessors, (132862), 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) [2025-04-13 17:28:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35715 states to 35715 states and 132862 transitions. [2025-04-13 17:28:09,204 INFO L79 Accepts]: Start accepts. Automaton has 35715 states and 132862 transitions. Word has length 7 [2025-04-13 17:28:09,205 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:28:09,205 INFO L485 AbstractCegarLoop]: Abstraction has 35715 states and 132862 transitions. [2025-04-13 17:28:09,205 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-04-13 17:28:09,205 INFO L278 IsEmpty]: Start isEmpty. Operand 35715 states and 132862 transitions. [2025-04-13 17:28:09,207 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-13 17:28:09,207 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:28:09,207 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2025-04-13 17:28:09,207 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 17:28:09,207 INFO L403 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)] === [2025-04-13 17:28:09,207 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:28:09,208 INFO L85 PathProgramCache]: Analyzing trace with hash -286953807, now seen corresponding path program 1 times [2025-04-13 17:28:09,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:28:09,208 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721907752] [2025-04-13 17:28:09,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:28:09,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:28:09,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 17:28:09,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 17:28:09,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:28:09,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 17:28:09,244 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 17:28:09,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 17:28:09,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 17:28:09,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:28:09,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 17:28:09,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 17:28:09,264 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 17:28:09,264 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-13 17:28:09,264 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-13 17:28:09,265 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-04-13 17:28:09,265 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-13 17:28:09,265 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 17:28:09,265 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 17:28:09,265 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-13 17:28:09,265 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 17:28:09,265 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-04-13 17:28:09,292 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 17:28:09,294 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 96 transitions, 232 flow [2025-04-13 17:28:18,650 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 301523 states, 301427 states have (on average 6.014119504888414) internal successors, (1812818), 301522 states have internal predecessors, (1812818), 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) [2025-04-13 17:28:18,656 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:28:18,661 INFO L340 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=FINITE_AUTOMATA, 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;@6a57dd71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:28:18,661 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 17:28:19,635 INFO L278 IsEmpty]: Start isEmpty. Operand has 301523 states, 301427 states have (on average 6.014119504888414) internal successors, (1812818), 301522 states have internal predecessors, (1812818), 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) [2025-04-13 17:28:19,637 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-04-13 17:28:19,637 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:28:19,637 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:28:19,637 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-04-13 17:28:19,637 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:28:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1207250921, now seen corresponding path program 1 times [2025-04-13 17:28:19,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:28:19,639 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301324606] [2025-04-13 17:28:19,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:28:19,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:28:19,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-13 17:28:19,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-13 17:28:19,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:28:19,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:28:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:28:19,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:28:19,747 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301324606] [2025-04-13 17:28:19,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301324606] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:28:19,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:28:19,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 17:28:19,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034862437] [2025-04-13 17:28:19,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:28:19,747 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 17:28:19,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:28:19,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 17:28:19,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 17:28:20,383 INFO L87 Difference]: Start difference. First operand has 301523 states, 301427 states have (on average 6.014119504888414) internal successors, (1812818), 301522 states have internal predecessors, (1812818), 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) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-04-13 17:28:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:28:37,651 INFO L93 Difference]: Finished difference Result 796673 states and 4827559 transitions. [2025-04-13 17:28:37,651 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 17:28:37,651 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2025-04-13 17:28:37,651 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:28:47,082 INFO L225 Difference]: With dead ends: 796673 [2025-04-13 17:28:47,082 INFO L226 Difference]: Without dead ends: 452964 [2025-04-13 17:28:47,918 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 17:28:47,919 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 60 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:28:47,919 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 17 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:28:48,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452964 states.