/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/pthread/bigshot_s2.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 16:53:36,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 16:53:36,182 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 16:53:36,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 16:53:36,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 16:53:36,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 16:53:36,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 16:53:36,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 16:53:36,214 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 16:53:36,214 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 16:53:36,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 16:53:36,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 16:53:36,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 16:53:36,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 16:53:36,215 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 16:53:36,215 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 16:53:36,215 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 16:53:36,215 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 16:53:36,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 16:53:36,216 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 16:53:36,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 16:53:36,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 16:53:36,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 16:53:36,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 16:53:36,217 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 16:53:36,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 16:53:36,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 16:53:36,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 16:53:36,217 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 16:53:36,217 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 16:53:36,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 16:53:36,217 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 16:53:36,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 16:53:36,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 16:53:36,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 16:53:36,460 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 16:53:36,462 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 16:53:36,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2025-04-13 16:53:37,738 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03f4dde7f/ffd6129f90164f8da9f6b354a5689bb7/FLAG8e7518362 [2025-04-13 16:53:37,983 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 16:53:37,983 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2025-04-13 16:53:37,995 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03f4dde7f/ffd6129f90164f8da9f6b354a5689bb7/FLAG8e7518362 [2025-04-13 16:53:38,788 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03f4dde7f/ffd6129f90164f8da9f6b354a5689bb7 [2025-04-13 16:53:38,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 16:53:38,791 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 16:53:38,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 16:53:38,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 16:53:38,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 16:53:38,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 04:53:38" (1/1) ... [2025-04-13 16:53:38,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322b5d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:38, skipping insertion in model container [2025-04-13 16:53:38,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 04:53:38" (1/1) ... [2025-04-13 16:53:38,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 16:53:39,207 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2025-04-13 16:53:39,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 16:53:39,231 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 16:53:39,280 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2025-04-13 16:53:39,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 16:53:39,338 INFO L204 MainTranslator]: Completed translation [2025-04-13 16:53:39,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39 WrapperNode [2025-04-13 16:53:39,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 16:53:39,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 16:53:39,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 16:53:39,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 16:53:39,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,361 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,381 INFO L138 Inliner]: procedures = 322, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2025-04-13 16:53:39,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 16:53:39,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 16:53:39,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 16:53:39,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 16:53:39,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,410 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 9, 2]. 69 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 1 writes are split as follows [0, 0, 1]. [2025-04-13 16:53:39,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,416 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 16:53:39,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 16:53:39,434 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 16:53:39,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 16:53:39,434 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (1/1) ... [2025-04-13 16:53:39,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 16:53:39,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:39,464 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 16:53:39,469 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 16:53:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-04-13 16:53:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-04-13 16:53:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-04-13 16:53:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 16:53:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 16:53:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 16:53:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 16:53:39,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 16:53:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 16:53:39,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 16:53:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 16:53:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 16:53:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 16:53:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 16:53:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 16:53:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 16:53:39,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 16:53:39,486 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 16:53:39,576 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 16:53:39,577 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 16:53:39,673 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 16:53:39,674 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 16:53:39,674 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 16:53:39,803 INFO L313 CfgBuilder]: Removed 1 assume(true) statements. [2025-04-13 16:53:39,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 04:53:39 BoogieIcfgContainer [2025-04-13 16:53:39,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 16:53:39,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 16:53:39,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 16:53:39,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 16:53:39,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 04:53:38" (1/3) ... [2025-04-13 16:53:39,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fc9d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 04:53:39, skipping insertion in model container [2025-04-13 16:53:39,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 04:53:39" (2/3) ... [2025-04-13 16:53:39,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fc9d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 04:53:39, skipping insertion in model container [2025-04-13 16:53:39,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 04:53:39" (3/3) ... [2025-04-13 16:53:39,811 INFO L128 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2025-04-13 16:53:39,820 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 16:53:39,822 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bigshot_s2.i that has 3 procedures, 16 locations, 15 edges, 1 initial locations, 1 loop locations, and 1 error locations. [2025-04-13 16:53:39,822 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 16:53:39,859 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 16:53:39,881 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions, 48 flow [2025-04-13 16:53:39,890 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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 16:53:39,904 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 16:53:39,911 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;@537a90c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 16:53:39,911 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 16:53:39,912 INFO L278 IsEmpty]: Start isEmpty. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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 16:53:39,915 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-13 16:53:39,915 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:39,916 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:39,916 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 16:53:39,919 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:39,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1678354063, now seen corresponding path program 1 times [2025-04-13 16:53:39,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:39,924 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529886848] [2025-04-13 16:53:39,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:39,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:39,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 16:53:40,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 16:53:40,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:40,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,089 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 16:53:40,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:40,090 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529886848] [2025-04-13 16:53:40,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529886848] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 16:53:40,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 16:53:40,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 16:53:40,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434648737] [2025-04-13 16:53:40,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 16:53:40,095 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 16:53:40,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:40,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 16:53:40,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 16:53:40,110 INFO L87 Difference]: Start difference. First operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 16:53:40,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:40,142 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2025-04-13 16:53:40,143 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 16:53:40,144 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2025-04-13 16:53:40,144 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:40,148 INFO L225 Difference]: With dead ends: 20 [2025-04-13 16:53:40,148 INFO L226 Difference]: Without dead ends: 16 [2025-04-13 16:53:40,151 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:53:40,154 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:40,156 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 16:53:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-04-13 16:53:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-04-13 16:53:40,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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 16:53:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2025-04-13 16:53:40,177 INFO L79 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 11 [2025-04-13 16:53:40,177 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:40,177 INFO L485 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2025-04-13 16:53:40,177 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 16:53:40,177 INFO L278 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2025-04-13 16:53:40,179 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 16:53:40,179 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:40,179 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:40,180 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 16:53:40,180 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 16:53:40,180 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:40,181 INFO L85 PathProgramCache]: Analyzing trace with hash 488843279, now seen corresponding path program 1 times [2025-04-13 16:53:40,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:40,181 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076549573] [2025-04-13 16:53:40,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:40,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:40,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 16:53:40,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 16:53:40,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:40,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,423 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 16:53:40,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:40,423 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076549573] [2025-04-13 16:53:40,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076549573] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 16:53:40,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 16:53:40,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 16:53:40,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344276881] [2025-04-13 16:53:40,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 16:53:40,424 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 16:53:40,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:40,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 16:53:40,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 16:53:40,425 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 16:53:40,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:40,460 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2025-04-13 16:53:40,460 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 16:53:40,460 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2025-04-13 16:53:40,461 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:40,461 INFO L225 Difference]: With dead ends: 22 [2025-04-13 16:53:40,461 INFO L226 Difference]: Without dead ends: 18 [2025-04-13 16:53:40,461 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 16:53:40,462 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:40,462 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 16:53:40,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-04-13 16:53:40,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-04-13 16:53:40,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 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 16:53:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2025-04-13 16:53:40,467 INFO L79 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 12 [2025-04-13 16:53:40,467 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:40,467 INFO L485 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2025-04-13 16:53:40,467 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 16:53:40,467 INFO L278 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2025-04-13 16:53:40,467 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 16:53:40,467 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:40,467 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:40,467 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 16:53:40,468 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 16:53:40,468 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2026252657, now seen corresponding path program 1 times [2025-04-13 16:53:40,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:40,468 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604729036] [2025-04-13 16:53:40,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:40,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:40,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 16:53:40,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 16:53:40,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:40,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:40,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:40,682 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604729036] [2025-04-13 16:53:40,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604729036] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:40,683 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835791621] [2025-04-13 16:53:40,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 16:53:40,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:40,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:40,685 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 16:53:40,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 16:53:40,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 16:53:40,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 16:53:40,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 16:53:40,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:40,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 16:53:40,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:40,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:40,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835791621] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:40,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:40,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-04-13 16:53:40,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107037222] [2025-04-13 16:53:40,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:40,873 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 16:53:40,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:40,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 16:53:40,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-04-13 16:53:40,874 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 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 16:53:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:40,956 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2025-04-13 16:53:40,956 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 16:53:40,957 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 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 13 [2025-04-13 16:53:40,957 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:40,957 INFO L225 Difference]: With dead ends: 24 [2025-04-13 16:53:40,957 INFO L226 Difference]: Without dead ends: 20 [2025-04-13 16:53:40,957 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2025-04-13 16:53:40,958 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:40,958 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 16:53:40,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-04-13 16:53:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-04-13 16:53:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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 16:53:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2025-04-13 16:53:40,962 INFO L79 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 13 [2025-04-13 16:53:40,962 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:40,962 INFO L485 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2025-04-13 16:53:40,962 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 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 16:53:40,962 INFO L278 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2025-04-13 16:53:40,962 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 16:53:40,962 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:40,962 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:40,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-13 16:53:41,167 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:41,167 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 16:53:41,167 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:41,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1610151951, now seen corresponding path program 2 times [2025-04-13 16:53:41,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:41,168 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396920062] [2025-04-13 16:53:41,168 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 16:53:41,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:41,176 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-04-13 16:53:41,184 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 16:53:41,184 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 16:53:41,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:41,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:41,404 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396920062] [2025-04-13 16:53:41,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396920062] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:41,404 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379130654] [2025-04-13 16:53:41,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 16:53:41,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:41,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:41,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 16:53:41,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-13 16:53:41,451 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-04-13 16:53:41,472 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 16:53:41,472 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 16:53:41,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:41,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 16:53:41,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:41,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:41,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379130654] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:41,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:41,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2025-04-13 16:53:41,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860622541] [2025-04-13 16:53:41,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:41,584 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 16:53:41,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:41,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 16:53:41,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-04-13 16:53:41,585 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 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 16:53:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:41,696 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2025-04-13 16:53:41,696 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 16:53:41,697 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 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 14 [2025-04-13 16:53:41,697 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:41,697 INFO L225 Difference]: With dead ends: 26 [2025-04-13 16:53:41,697 INFO L226 Difference]: Without dead ends: 22 [2025-04-13 16:53:41,697 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2025-04-13 16:53:41,698 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:41,698 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 16:53:41,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-04-13 16:53:41,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-04-13 16:53:41,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 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 16:53:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2025-04-13 16:53:41,701 INFO L79 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 14 [2025-04-13 16:53:41,701 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:41,701 INFO L485 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2025-04-13 16:53:41,701 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 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 16:53:41,701 INFO L278 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2025-04-13 16:53:41,701 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 16:53:41,701 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 16:53:41,701 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 16:53:41,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-13 16:53:41,902 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-04-13 16:53:41,902 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 16:53:41,903 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 16:53:41,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1625422193, now seen corresponding path program 3 times [2025-04-13 16:53:41,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 16:53:41,903 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464330558] [2025-04-13 16:53:41,903 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 16:53:41,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 16:53:41,919 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 3 equivalence classes. [2025-04-13 16:53:41,935 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 16:53:41,935 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 16:53:41,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:42,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 16:53:42,348 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464330558] [2025-04-13 16:53:42,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464330558] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 16:53:42,348 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498587985] [2025-04-13 16:53:42,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 16:53:42,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:42,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 16:53:42,350 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 16:53:42,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-13 16:53:42,396 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 3 equivalence classes. [2025-04-13 16:53:42,415 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 16:53:42,415 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 16:53:42,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 16:53:42,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 16:53:42,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 16:53:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:42,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 16:53:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 16:53:42,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498587985] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 16:53:42,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 16:53:42,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2025-04-13 16:53:42,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090058970] [2025-04-13 16:53:42,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 16:53:42,605 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 16:53:42,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 16:53:42,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 16:53:42,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2025-04-13 16:53:42,606 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 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 16:53:42,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 16:53:42,845 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2025-04-13 16:53:42,846 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 16:53:42,846 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 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 15 [2025-04-13 16:53:42,846 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 16:53:42,846 INFO L225 Difference]: With dead ends: 27 [2025-04-13 16:53:42,846 INFO L226 Difference]: Without dead ends: 0 [2025-04-13 16:53:42,847 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2025-04-13 16:53:42,847 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 16:53:42,847 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 16:53:42,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-13 16:53:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-13 16:53:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 16:53:42,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-13 16:53:42,848 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2025-04-13 16:53:42,848 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 16:53:42,848 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-13 16:53:42,848 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 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 16:53:42,848 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-13 16:53:42,848 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-13 16:53:42,852 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 16:53:42,852 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 16:53:42,852 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 16:53:42,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-13 16:53:43,053 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 16:53:43,055 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2025-04-13 16:53:43,057 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 16:53:43,057 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 16:53:43,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 04:53:43 BasicIcfg [2025-04-13 16:53:43,058 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 16:53:43,059 INFO L158 Benchmark]: Toolchain (without parser) took 4268.29ms. Allocated memory is still 125.8MB. Free memory was 86.2MB in the beginning and 71.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. [2025-04-13 16:53:43,059 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 16:53:43,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 548.07ms. Allocated memory is still 125.8MB. Free memory was 85.4MB in the beginning and 51.2MB in the end (delta: 34.3MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2025-04-13 16:53:43,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.60ms. Allocated memory is still 125.8MB. Free memory was 50.8MB in the beginning and 48.5MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 16:53:43,059 INFO L158 Benchmark]: Boogie Preprocessor took 51.24ms. Allocated memory is still 125.8MB. Free memory was 48.5MB in the beginning and 46.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 16:53:43,059 INFO L158 Benchmark]: RCFGBuilder took 370.54ms. Allocated memory is still 125.8MB. Free memory was 46.6MB in the beginning and 83.1MB in the end (delta: -36.5MB). Peak memory consumption was 35.9MB. Max. memory is 8.0GB. [2025-04-13 16:53:43,059 INFO L158 Benchmark]: TraceAbstraction took 3251.97ms. Allocated memory is still 125.8MB. Free memory was 82.4MB in the beginning and 71.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. [2025-04-13 16:53:43,060 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 548.07ms. Allocated memory is still 125.8MB. Free memory was 85.4MB in the beginning and 51.2MB in the end (delta: 34.3MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.60ms. Allocated memory is still 125.8MB. Free memory was 50.8MB in the beginning and 48.5MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.24ms. Allocated memory is still 125.8MB. Free memory was 48.5MB in the beginning and 46.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 370.54ms. Allocated memory is still 125.8MB. Free memory was 46.6MB in the beginning and 83.1MB in the end (delta: -36.5MB). Peak memory consumption was 35.9MB. Max. memory is 8.0GB. * TraceAbstraction took 3251.97ms. Allocated memory is still 125.8MB. Free memory was 82.4MB in the beginning and 71.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1107]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 23 locations, 26 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 100 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 376 IncrementalHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 376 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 1080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 486 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 0/30 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 16:53:43,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...