/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_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:11:09,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:11:09,858 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 [2025-04-14 00:11:09,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:11:09,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:11:09,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:11:09,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:11:09,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:11:09,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:11:09,883 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:11:09,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:11:09,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:11:09,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:11:09,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:11:09,884 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:11:09,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:11:09,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:11:09,884 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:11:09,885 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:11:09,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:11:09,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:11:09,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:11:09,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:11:09,886 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:11:09,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:11:09,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:11:09,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:11:09,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:11:09,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:11:09,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:11:09,886 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 -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 00:11:10,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:11:10,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:11:10,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:11:10,146 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:11:10,147 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:11:10,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2025-04-14 00:11:11,541 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d1f2ed2/88539e80943f46369778fbe596d7939e/FLAGd6f95225d [2025-04-14 00:11:11,881 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:11:11,882 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2025-04-14 00:11:11,915 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d1f2ed2/88539e80943f46369778fbe596d7939e/FLAGd6f95225d [2025-04-14 00:11:12,541 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d1f2ed2/88539e80943f46369778fbe596d7939e [2025-04-14 00:11:12,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:11:12,548 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:11:12,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:11:12,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:11:12,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:11:12,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:11:12" (1/1) ... [2025-04-14 00:11:12,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0e6d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:12, skipping insertion in model container [2025-04-14 00:11:12,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:11:12" (1/1) ... [2025-04-14 00:11:12,598 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:11:13,111 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2025-04-14 00:11:13,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:11:13,150 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:11:13,230 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2025-04-14 00:11:13,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:11:13,324 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:11:13,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13 WrapperNode [2025-04-14 00:11:13,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:11:13,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:11:13,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:11:13,327 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:11:13,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (1/1) ... [2025-04-14 00:11:13,357 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (1/1) ... [2025-04-14 00:11:13,377 INFO L138 Inliner]: procedures = 483, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 85 [2025-04-14 00:11:13,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:11:13,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:11:13,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:11:13,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:11:13,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (1/1) ... [2025-04-14 00:11:13,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (1/1) ... [2025-04-14 00:11:13,389 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (1/1) ... [2025-04-14 00:11:13,410 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2025-04-14 00:11:13,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (1/1) ... [2025-04-14 00:11:13,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (1/1) ... [2025-04-14 00:11:13,424 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (1/1) ... [2025-04-14 00:11:13,425 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (1/1) ... [2025-04-14 00:11:13,427 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (1/1) ... [2025-04-14 00:11:13,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (1/1) ... [2025-04-14 00:11:13,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:11:13,433 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:11:13,433 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:11:13,433 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:11:13,434 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (1/1) ... [2025-04-14 00:11:13,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:11:13,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:11:13,468 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) [2025-04-14 00:11:13,470 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 [2025-04-14 00:11:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 00:11:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-14 00:11:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 00:11:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-14 00:11:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:11:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-14 00:11:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-14 00:11:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-04-14 00:11:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:11:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:11:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-14 00:11:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-14 00:11:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 00:11:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 00:11:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:11:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 00:11:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-14 00:11:13,501 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 00:11:13,735 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:11:13,737 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:11:13,887 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:11:13,888 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:11:13,888 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:11:14,056 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:14,067 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:11:14,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:11:14 BoogieIcfgContainer [2025-04-14 00:11:14,068 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:11:14,069 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:11:14,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:11:14,073 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:11:14,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:11:12" (1/3) ... [2025-04-14 00:11:14,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b4c2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:11:14, skipping insertion in model container [2025-04-14 00:11:14,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:13" (2/3) ... [2025-04-14 00:11:14,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b4c2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:11:14, skipping insertion in model container [2025-04-14 00:11:14,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:11:14" (3/3) ... [2025-04-14 00:11:14,074 INFO L128 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2025-04-14 00:11:14,085 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:11:14,086 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-1_2-join.i that has 2 procedures, 20 locations, 21 edges, 1 initial locations, 0 loop locations, and 4 error locations. [2025-04-14 00:11:14,086 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:11:14,121 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-04-14 00:11:14,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 22 transitions, 51 flow [2025-04-14 00:11:14,185 INFO L116 PetriNetUnfolderBase]: 1/21 cut-off events. [2025-04-14 00:11:14,186 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-14 00:11:14,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 21 events. 1/21 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 28 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 2. Up to 3 conditions per place. [2025-04-14 00:11:14,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 22 transitions, 51 flow [2025-04-14 00:11:14,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 40 flow [2025-04-14 00:11:14,203 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:11:14,213 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=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;@3266fa4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:11:14,213 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-14 00:11:14,218 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:11:14,218 INFO L116 PetriNetUnfolderBase]: 0/0 cut-off events. [2025-04-14 00:11:14,218 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:11:14,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:11:14,219 INFO L206 CegarLoopForPetriNet]: trace histogram [1] [2025-04-14 00:11:14,219 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-14 00:11:14,222 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:11:14,224 INFO L85 PathProgramCache]: Analyzing trace with hash 253, now seen corresponding path program 1 times [2025-04-14 00:11:14,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:11:14,230 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597133252] [2025-04-14 00:11:14,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:11:14,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:11:14,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-14 00:11:14,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-14 00:11:14,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:11:14,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:11:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:11:14,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:11:14,540 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597133252] [2025-04-14 00:11:14,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597133252] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:11:14,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:11:14,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2025-04-14 00:11:14,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145037119] [2025-04-14 00:11:14,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:11:14,552 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-14 00:11:14,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:11:14,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-14 00:11:14,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-14 00:11:14,573 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-04-14 00:11:14,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 40 flow. Second operand has 2 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) [2025-04-14 00:11:14,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:11:14,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-04-14 00:11:14,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:11:14,625 INFO L116 PetriNetUnfolderBase]: 20/54 cut-off events. [2025-04-14 00:11:14,625 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-14 00:11:14,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 54 events. 20/54 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 141 event pairs, 20 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 100. Up to 53 conditions per place. [2025-04-14 00:11:14,627 INFO L140 encePairwiseOnDemand]: 19/22 looper letters, 9 selfloop transitions, 0 changer transitions 3/14 dead transitions. [2025-04-14 00:11:14,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 58 flow [2025-04-14 00:11:14,629 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-14 00:11:14,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-04-14 00:11:14,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 21 transitions. [2025-04-14 00:11:14,637 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2025-04-14 00:11:14,638 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 40 flow. Second operand 2 states and 21 transitions. [2025-04-14 00:11:14,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 58 flow [2025-04-14 00:11:14,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-14 00:11:14,645 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 23 flow [2025-04-14 00:11:14,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=23, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2025-04-14 00:11:14,652 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, -4 predicate places. [2025-04-14 00:11:14,652 INFO L485 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 23 flow [2025-04-14 00:11:14,652 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2025-04-14 00:11:14,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:11:14,652 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-04-14 00:11:14,653 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:11:14,653 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-14 00:11:14,653 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:11:14,653 INFO L85 PathProgramCache]: Analyzing trace with hash 242253605, now seen corresponding path program 1 times [2025-04-14 00:11:14,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:11:14,654 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211813219] [2025-04-14 00:11:14,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:11:14,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:11:14,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-14 00:11:14,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-14 00:11:14,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:11:14,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:11:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:11:14,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:11:14,830 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211813219] [2025-04-14 00:11:14,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211813219] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:11:14,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:11:14,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 00:11:14,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667407391] [2025-04-14 00:11:14,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:11:14,831 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:11:14,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:11:14,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:11:14,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:11:14,832 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-04-14 00:11:14,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 23 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2025-04-14 00:11:14,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:11:14,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-04-14 00:11:14,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:11:14,866 INFO L116 PetriNetUnfolderBase]: 9/33 cut-off events. [2025-04-14 00:11:14,867 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:11:14,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 33 events. 9/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 67 event pairs, 6 based on Foata normal form. 5/37 useless extension candidates. Maximal degree in co-relation 65. Up to 24 conditions per place. [2025-04-14 00:11:14,867 INFO L140 encePairwiseOnDemand]: 19/22 looper letters, 8 selfloop transitions, 2 changer transitions 3/15 dead transitions. [2025-04-14 00:11:14,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 15 transitions, 57 flow [2025-04-14 00:11:14,869 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 00:11:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 00:11:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 23 transitions. [2025-04-14 00:11:14,870 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2025-04-14 00:11:14,870 INFO L175 Difference]: Start difference. First operand has 17 places, 11 transitions, 23 flow. Second operand 3 states and 23 transitions. [2025-04-14 00:11:14,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 15 transitions, 57 flow [2025-04-14 00:11:14,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 57 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-14 00:11:14,871 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 31 flow [2025-04-14 00:11:14,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=31, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2025-04-14 00:11:14,872 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, -4 predicate places. [2025-04-14 00:11:14,872 INFO L485 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 31 flow [2025-04-14 00:11:14,872 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2025-04-14 00:11:14,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:11:14,872 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:11:14,872 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:11:14,872 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-14 00:11:14,874 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:11:14,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1912075811, now seen corresponding path program 1 times [2025-04-14 00:11:14,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:11:14,876 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350008740] [2025-04-14 00:11:14,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:11:14,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:11:14,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-14 00:11:14,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-14 00:11:14,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:11:14,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:11:14,901 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-14 00:11:14,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-14 00:11:14,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-14 00:11:14,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:11:14,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:11:14,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-14 00:11:14,930 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-14 00:11:14,931 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-04-14 00:11:14,932 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-14 00:11:14,933 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-04-14 00:11:14,933 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-14 00:11:14,933 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-04-14 00:11:14,933 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:11:14,933 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-14 00:11:14,976 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:11:14,976 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:11:14,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:11:14 BasicIcfg [2025-04-14 00:11:14,984 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:11:14,984 INFO L158 Benchmark]: Toolchain (without parser) took 2438.52ms. Allocated memory is still 125.8MB. Free memory was 86.5MB in the beginning and 38.0MB in the end (delta: 48.4MB). Peak memory consumption was 48.6MB. Max. memory is 8.0GB. [2025-04-14 00:11:14,984 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 167.8MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:11:14,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 777.05ms. Allocated memory is still 125.8MB. Free memory was 86.2MB in the beginning and 32.1MB in the end (delta: 54.0MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. [2025-04-14 00:11:14,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.56ms. Allocated memory is still 125.8MB. Free memory was 32.1MB in the beginning and 28.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:11:14,985 INFO L158 Benchmark]: Boogie Preprocessor took 54.04ms. Allocated memory is still 125.8MB. Free memory was 28.9MB in the beginning and 26.2MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:11:14,985 INFO L158 Benchmark]: IcfgBuilder took 634.98ms. Allocated memory is still 125.8MB. Free memory was 26.0MB in the beginning and 48.4MB in the end (delta: -22.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2025-04-14 00:11:14,985 INFO L158 Benchmark]: TraceAbstraction took 914.50ms. Allocated memory is still 125.8MB. Free memory was 48.0MB in the beginning and 38.0MB in the end (delta: 10.0MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2025-04-14 00:11:14,987 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 167.8MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 777.05ms. Allocated memory is still 125.8MB. Free memory was 86.2MB in the beginning and 32.1MB in the end (delta: 54.0MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.56ms. Allocated memory is still 125.8MB. Free memory was 32.1MB in the beginning and 28.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 54.04ms. Allocated memory is still 125.8MB. Free memory was 28.9MB in the beginning and 26.2MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 634.98ms. Allocated memory is still 125.8MB. Free memory was 26.0MB in the beginning and 48.4MB in the end (delta: -22.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 914.50ms. Allocated memory is still 125.8MB. Free memory was 48.0MB in the beginning and 38.0MB in the end (delta: 10.0MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [\at(arg, Pre)={0:0}, mutex={3:0}, pdev=1, t1=-1] [L1714] 0 pdev = 2 VAL [\at(arg, Pre)={0:0}, arg={0:0}, mutex={3:0}, pdev=2, t1=-1] [L1702] 1 pdev = 6 VAL [\at(arg, Pre)={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1=-1] [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\at(arg, Pre)={0:0}, \at(expression, Pre)=0, arg={0:0}, expression=0, mutex={3:0}, pdev=6, t1=-1] - UnprovableResult [Line: 1695]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 28 locations, 30 edges, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-14 00:11:15,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...