/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 FINITE_AUTOMATA --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread-wmm/mix036_pso.opt_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:43:57,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:43:57,875 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 21:43:57,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:43:57,878 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:43:57,897 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:43:57,897 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:43:57,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:43:57,897 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:43:57,897 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:43:57,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:43:57,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:43:57,898 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:43:57,898 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:43:57,898 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:43:57,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:43:57,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:43:57,898 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:43:57,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:43:57,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:43:57,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:43:57,898 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:43:57,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:43:57,898 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:43:57,899 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:43:57,899 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:43:57,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:43:57,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:43:57,900 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:43:57,900 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:43:57,900 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:43:57,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:43:57,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:43:57,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:43:57,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:43:57,900 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 21:43:58,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:43:58,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:43:58,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:43:58,097 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:43:58,097 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:43:58,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix036_pso.opt_tso.opt.i [2025-04-13 21:43:59,309 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2580e443/dda96d53c0594d47a2c259512e3014e0/FLAG24fd554d9 [2025-04-13 21:43:59,587 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:43:59,588 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix036_pso.opt_tso.opt.i [2025-04-13 21:43:59,599 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2580e443/dda96d53c0594d47a2c259512e3014e0/FLAG24fd554d9 [2025-04-13 21:44:00,360 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2580e443/dda96d53c0594d47a2c259512e3014e0 [2025-04-13 21:44:00,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:44:00,363 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:44:00,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:44:00,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:44:00,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:44:00,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d640be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00, skipping insertion in model container [2025-04-13 21:44:00,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,400 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:44:00,555 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-wmm/mix036_pso.opt_tso.opt.i[956,969] [2025-04-13 21:44:00,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:44:00,752 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:44:00,772 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-wmm/mix036_pso.opt_tso.opt.i[956,969] [2025-04-13 21:44:00,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:44:00,842 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:44:00,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00 WrapperNode [2025-04-13 21:44:00,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:44:00,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:44:00,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:44:00,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:44:00,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,894 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 136 [2025-04-13 21:44:00,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:44:00,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:44:00,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:44:00,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:44:00,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,926 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 21:44:00,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,930 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,941 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:44:00,941 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 21:44:00,941 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 21:44:00,942 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 21:44:00,942 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (1/1) ... [2025-04-13 21:44:00,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:44:00,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:44:00,965 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 21:44:00,968 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 21:44:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 21:44:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:44:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-13 21:44:00,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-13 21:44:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-13 21:44:00,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-13 21:44:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-04-13 21:44:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-04-13 21:44:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-04-13 21:44:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-04-13 21:44:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:44:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 21:44:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:44:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:44:00,987 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 21:44:01,109 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 21:44:01,110 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:44:01,396 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:44:01,397 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:44:01,397 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 21:44:01,669 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:44:01,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:44:01 BoogieIcfgContainer [2025-04-13 21:44:01,669 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 21:44:01,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:44:01,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:44:01,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:44:01,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:44:00" (1/3) ... [2025-04-13 21:44:01,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f789f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:44:01, skipping insertion in model container [2025-04-13 21:44:01,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:44:00" (2/3) ... [2025-04-13 21:44:01,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f789f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:44:01, skipping insertion in model container [2025-04-13 21:44:01,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:44:01" (3/3) ... [2025-04-13 21:44:01,678 INFO L128 eAbstractionObserver]: Analyzing ICFG mix036_pso.opt_tso.opt.i [2025-04-13 21:44:01,687 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:44:01,689 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix036_pso.opt_tso.opt.i that has 5 procedures, 47 locations, 42 edges, 1 initial locations, 0 loop locations, and 2 error locations. [2025-04-13 21:44:01,689 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:44:01,737 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 21:44:01,762 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 46 transitions, 108 flow [2025-04-13 21:44:02,642 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 25839 states, 25836 states have (on average 4.297646694534758) internal successors, (111034), 25838 states have internal predecessors, (111034), 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 21:44:02,665 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:44:02,677 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;@314172fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:44:02,678 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-13 21:44:02,763 INFO L278 IsEmpty]: Start isEmpty. Operand has 25839 states, 25836 states have (on average 4.297646694534758) internal successors, (111034), 25838 states have internal predecessors, (111034), 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 21:44:02,769 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-13 21:44:02,770 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:44:02,770 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:44:02,771 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:44:02,775 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:44:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2146253544, now seen corresponding path program 1 times [2025-04-13 21:44:02,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:44:02,781 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946850251] [2025-04-13 21:44:02,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:44:02,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:44:02,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 21:44:02,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 21:44:02,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:44:02,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:44:03,279 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 21:44:03,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:44:03,281 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946850251] [2025-04-13 21:44:03,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946850251] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:44:03,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:44:03,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 21:44:03,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819676830] [2025-04-13 21:44:03,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:44:03,285 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 21:44:03,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:44:03,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 21:44:03,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:44:03,356 INFO L87 Difference]: Start difference. First operand has 25839 states, 25836 states have (on average 4.297646694534758) internal successors, (111034), 25838 states have internal predecessors, (111034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 21:44:03,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:44:03,927 INFO L93 Difference]: Finished difference Result 25839 states and 111034 transitions. [2025-04-13 21:44:03,928 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 21:44:03,931 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2025-04-13 21:44:03,931 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:44:04,151 INFO L225 Difference]: With dead ends: 25839 [2025-04-13 21:44:04,151 INFO L226 Difference]: Without dead ends: 22409 [2025-04-13 21:44:04,167 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 21:44:04,169 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:44:04,169 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 7 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:44:04,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22409 states. [2025-04-13 21:44:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22409 to 22409. [2025-04-13 21:44:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22409 states, 22408 states have (on average 4.285969296679757) internal successors, (96040), 22408 states have internal predecessors, (96040), 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 21:44:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22409 states to 22409 states and 96040 transitions. [2025-04-13 21:44:05,464 INFO L79 Accepts]: Start accepts. Automaton has 22409 states and 96040 transitions. Word has length 10 [2025-04-13 21:44:05,465 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:44:05,465 INFO L485 AbstractCegarLoop]: Abstraction has 22409 states and 96040 transitions. [2025-04-13 21:44:05,465 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 21:44:05,466 INFO L278 IsEmpty]: Start isEmpty. Operand 22409 states and 96040 transitions. [2025-04-13 21:44:05,474 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 21:44:05,474 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:44:05,474 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:44:05,475 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:44:05,475 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:44:05,475 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:44:05,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1351107155, now seen corresponding path program 1 times [2025-04-13 21:44:05,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:44:05,476 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923071446] [2025-04-13 21:44:05,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:44:05,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:44:05,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 21:44:05,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 21:44:05,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:44:05,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:44:05,721 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 21:44:05,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:44:05,722 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923071446] [2025-04-13 21:44:05,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923071446] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:44:05,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:44:05,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 21:44:05,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555545336] [2025-04-13 21:44:05,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:44:05,723 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 21:44:05,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:44:05,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 21:44:05,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 21:44:05,723 INFO L87 Difference]: Start difference. First operand 22409 states and 96040 transitions. Second operand has 4 states, 4 states have (on average 3.5) 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) [2025-04-13 21:44:06,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:44:06,405 INFO L93 Difference]: Finished difference Result 33469 states and 140798 transitions. [2025-04-13 21:44:06,405 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 21:44:06,406 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) 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) Word has length 14 [2025-04-13 21:44:06,406 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:44:06,505 INFO L225 Difference]: With dead ends: 33469 [2025-04-13 21:44:06,505 INFO L226 Difference]: Without dead ends: 18034 [2025-04-13 21:44:06,537 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 21:44:06,538 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 82 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:44:06,539 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 12 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:44:06,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18034 states. [2025-04-13 21:44:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18034 to 18034. [2025-04-13 21:44:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18034 states, 18033 states have (on average 4.112737758553762) internal successors, (74165), 18033 states have internal predecessors, (74165), 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 21:44:07,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18034 states to 18034 states and 74165 transitions. [2025-04-13 21:44:07,449 INFO L79 Accepts]: Start accepts. Automaton has 18034 states and 74165 transitions. Word has length 14 [2025-04-13 21:44:07,450 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:44:07,450 INFO L485 AbstractCegarLoop]: Abstraction has 18034 states and 74165 transitions. [2025-04-13 21:44:07,450 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) 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) [2025-04-13 21:44:07,450 INFO L278 IsEmpty]: Start isEmpty. Operand 18034 states and 74165 transitions. [2025-04-13 21:44:07,464 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 21:44:07,464 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:44:07,464 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:44:07,464 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 21:44:07,464 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:44:07,467 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:44:07,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2078790115, now seen corresponding path program 1 times [2025-04-13 21:44:07,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:44:07,468 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844734011] [2025-04-13 21:44:07,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:44:07,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:44:07,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 21:44:07,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 21:44:07,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:44:07,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:44:07,662 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 21:44:07,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:44:07,662 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844734011] [2025-04-13 21:44:07,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844734011] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:44:07,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:44:07,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 21:44:07,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784987030] [2025-04-13 21:44:07,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:44:07,663 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 21:44:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:44:07,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 21:44:07,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 21:44:07,664 INFO L87 Difference]: Start difference. First operand 18034 states and 74165 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 21:44:08,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:44:08,157 INFO L93 Difference]: Finished difference Result 22594 states and 90973 transitions. [2025-04-13 21:44:08,158 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 21:44:08,158 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-04-13 21:44:08,158 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:44:08,265 INFO L225 Difference]: With dead ends: 22594 [2025-04-13 21:44:08,265 INFO L226 Difference]: Without dead ends: 11534 [2025-04-13 21:44:08,289 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-04-13 21:44:08,292 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 152 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 21:44:08,292 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 16 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 21:44:08,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11534 states. [2025-04-13 21:44:08,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11534 to 11534. [2025-04-13 21:44:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11534 states, 11533 states have (on average 3.8944767189803176) internal successors, (44915), 11533 states have internal predecessors, (44915), 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 21:44:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11534 states to 11534 states and 44915 transitions. [2025-04-13 21:44:08,639 INFO L79 Accepts]: Start accepts. Automaton has 11534 states and 44915 transitions. Word has length 19 [2025-04-13 21:44:08,639 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:44:08,639 INFO L485 AbstractCegarLoop]: Abstraction has 11534 states and 44915 transitions. [2025-04-13 21:44:08,639 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 21:44:08,639 INFO L278 IsEmpty]: Start isEmpty. Operand 11534 states and 44915 transitions. [2025-04-13 21:44:08,654 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-13 21:44:08,654 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:44:08,655 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:44:08,655 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 21:44:08,655 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:44:08,657 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:44:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash -738705177, now seen corresponding path program 1 times [2025-04-13 21:44:08,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:44:08,657 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963880738] [2025-04-13 21:44:08,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:44:08,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:44:08,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-13 21:44:08,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 21:44:08,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:44:08,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:44:08,810 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 21:44:08,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:44:08,810 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963880738] [2025-04-13 21:44:08,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963880738] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:44:08,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:44:08,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 21:44:08,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241250098] [2025-04-13 21:44:08,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:44:08,811 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 21:44:08,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:44:08,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 21:44:08,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-13 21:44:08,811 INFO L87 Difference]: Start difference. First operand 11534 states and 44915 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 21:44:09,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:44:09,087 INFO L93 Difference]: Finished difference Result 12494 states and 48043 transitions. [2025-04-13 21:44:09,090 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 21:44:09,091 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2025-04-13 21:44:09,091 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:44:09,150 INFO L225 Difference]: With dead ends: 12494 [2025-04-13 21:44:09,150 INFO L226 Difference]: Without dead ends: 7934 [2025-04-13 21:44:09,162 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2025-04-13 21:44:09,163 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 220 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 21:44:09,163 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 20 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 21:44:09,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7934 states. [2025-04-13 21:44:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7934 to 7934. [2025-04-13 21:44:09,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7934 states, 7933 states have (on average 3.8465901928652464) internal successors, (30515), 7933 states have internal predecessors, (30515), 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 21:44:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7934 states to 7934 states and 30515 transitions. [2025-04-13 21:44:09,501 INFO L79 Accepts]: Start accepts. Automaton has 7934 states and 30515 transitions. Word has length 24 [2025-04-13 21:44:09,501 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:44:09,501 INFO L485 AbstractCegarLoop]: Abstraction has 7934 states and 30515 transitions. [2025-04-13 21:44:09,501 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 21:44:09,501 INFO L278 IsEmpty]: Start isEmpty. Operand 7934 states and 30515 transitions. [2025-04-13 21:44:09,521 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 21:44:09,521 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:44:09,521 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:44:09,522 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 21:44:09,522 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:44:09,522 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:44:09,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1876786569, now seen corresponding path program 1 times [2025-04-13 21:44:09,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:44:09,523 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978642136] [2025-04-13 21:44:09,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:44:09,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:44:09,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 21:44:09,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 21:44:09,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:44:09,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:44:09,945 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 21:44:09,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:44:09,945 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978642136] [2025-04-13 21:44:09,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978642136] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:44:09,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:44:09,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-13 21:44:09,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028964435] [2025-04-13 21:44:09,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:44:09,945 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 21:44:09,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:44:09,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 21:44:09,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 21:44:09,946 INFO L87 Difference]: Start difference. First operand 7934 states and 30515 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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 21:44:10,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:44:10,384 INFO L93 Difference]: Finished difference Result 8014 states and 30739 transitions. [2025-04-13 21:44:10,385 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 21:44:10,385 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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) Word has length 29 [2025-04-13 21:44:10,385 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:44:10,425 INFO L225 Difference]: With dead ends: 8014 [2025-04-13 21:44:10,426 INFO L226 Difference]: Without dead ends: 7054 [2025-04-13 21:44:10,431 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-04-13 21:44:10,431 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 249 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 21:44:10,431 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 16 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 21:44:10,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7054 states. [2025-04-13 21:44:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7054 to 7054. [2025-04-13 21:44:10,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7054 states, 7053 states have (on average 3.889834113143343) internal successors, (27435), 7053 states have internal predecessors, (27435), 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 21:44:10,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7054 states to 7054 states and 27435 transitions. [2025-04-13 21:44:10,598 INFO L79 Accepts]: Start accepts. Automaton has 7054 states and 27435 transitions. Word has length 29 [2025-04-13 21:44:10,598 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:44:10,598 INFO L485 AbstractCegarLoop]: Abstraction has 7054 states and 27435 transitions. [2025-04-13 21:44:10,598 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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 21:44:10,598 INFO L278 IsEmpty]: Start isEmpty. Operand 7054 states and 27435 transitions. [2025-04-13 21:44:10,614 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 21:44:10,614 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:44:10,614 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:44:10,614 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 21:44:10,614 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:44:10,615 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:44:10,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2011689932, now seen corresponding path program 1 times [2025-04-13 21:44:10,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:44:10,615 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140973105] [2025-04-13 21:44:10,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:44:10,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:44:10,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-13 21:44:10,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 21:44:10,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:44:10,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:44:10,940 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 21:44:10,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:44:10,940 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140973105] [2025-04-13 21:44:10,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140973105] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:44:10,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:44:10,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 21:44:10,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655135235] [2025-04-13 21:44:10,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:44:10,941 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 21:44:10,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:44:10,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 21:44:10,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 21:44:10,941 INFO L87 Difference]: Start difference. First operand 7054 states and 27435 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 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 21:44:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:44:11,203 INFO L93 Difference]: Finished difference Result 9094 states and 35053 transitions. [2025-04-13 21:44:11,203 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 21:44:11,204 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 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 36 [2025-04-13 21:44:11,204 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:44:11,239 INFO L225 Difference]: With dead ends: 9094 [2025-04-13 21:44:11,239 INFO L226 Difference]: Without dead ends: 4034 [2025-04-13 21:44:11,249 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-04-13 21:44:11,250 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 72 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 21:44:11,250 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 33 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 21:44:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2025-04-13 21:44:11,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 4034. [2025-04-13 21:44:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4034 states, 4033 states have (on average 3.7366724522687824) internal successors, (15070), 4033 states have internal predecessors, (15070), 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 21:44:11,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4034 states to 4034 states and 15070 transitions. [2025-04-13 21:44:11,367 INFO L79 Accepts]: Start accepts. Automaton has 4034 states and 15070 transitions. Word has length 36 [2025-04-13 21:44:11,368 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:44:11,368 INFO L485 AbstractCegarLoop]: Abstraction has 4034 states and 15070 transitions. [2025-04-13 21:44:11,368 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 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 21:44:11,368 INFO L278 IsEmpty]: Start isEmpty. Operand 4034 states and 15070 transitions. [2025-04-13 21:44:11,377 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 21:44:11,377 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:44:11,377 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:44:11,377 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 21:44:11,377 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:44:11,377 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:44:11,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2108357602, now seen corresponding path program 2 times [2025-04-13 21:44:11,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:44:11,378 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820049470] [2025-04-13 21:44:11,378 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 21:44:11,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:44:11,389 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 1 equivalence classes. [2025-04-13 21:44:11,429 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 21:44:11,430 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 21:44:11,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:44:11,958 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 21:44:11,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:44:11,959 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820049470] [2025-04-13 21:44:11,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820049470] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:44:11,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:44:11,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 21:44:11,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231576868] [2025-04-13 21:44:11,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:44:11,959 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 21:44:11,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:44:11,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 21:44:11,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-04-13 21:44:11,960 INFO L87 Difference]: Start difference. First operand 4034 states and 15070 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 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 21:44:12,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:44:12,411 INFO L93 Difference]: Finished difference Result 5624 states and 20963 transitions. [2025-04-13 21:44:12,411 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 21:44:12,411 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 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 36 [2025-04-13 21:44:12,411 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:44:12,500 INFO L225 Difference]: With dead ends: 5624 [2025-04-13 21:44:12,500 INFO L226 Difference]: Without dead ends: 4304 [2025-04-13 21:44:12,503 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-04-13 21:44:12,503 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 131 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 21:44:12,503 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 63 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 21:44:12,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4304 states. [2025-04-13 21:44:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4304 to 4034. [2025-04-13 21:44:12,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4034 states, 4033 states have (on average 3.7292338209769405) internal successors, (15040), 4033 states have internal predecessors, (15040), 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 21:44:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4034 states to 4034 states and 15040 transitions. [2025-04-13 21:44:12,602 INFO L79 Accepts]: Start accepts. Automaton has 4034 states and 15040 transitions. Word has length 36 [2025-04-13 21:44:12,602 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:44:12,603 INFO L485 AbstractCegarLoop]: Abstraction has 4034 states and 15040 transitions. [2025-04-13 21:44:12,603 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 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 21:44:12,603 INFO L278 IsEmpty]: Start isEmpty. Operand 4034 states and 15040 transitions. [2025-04-13 21:44:12,610 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 21:44:12,611 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:44:12,611 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:44:12,611 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 21:44:12,611 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:44:12,612 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:44:12,612 INFO L85 PathProgramCache]: Analyzing trace with hash -221583638, now seen corresponding path program 3 times [2025-04-13 21:44:12,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:44:12,612 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369227788] [2025-04-13 21:44:12,612 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 21:44:12,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:44:12,620 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 1 equivalence classes. [2025-04-13 21:44:12,664 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 21:44:12,664 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 21:44:12,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:44:12,828 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 21:44:12,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:44:12,829 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369227788] [2025-04-13 21:44:12,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369227788] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:44:12,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:44:12,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 21:44:12,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489283733] [2025-04-13 21:44:12,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:44:12,829 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 21:44:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:44:12,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 21:44:12,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 21:44:12,830 INFO L87 Difference]: Start difference. First operand 4034 states and 15040 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 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 21:44:13,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:44:13,028 INFO L93 Difference]: Finished difference Result 5114 states and 18890 transitions. [2025-04-13 21:44:13,028 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 21:44:13,028 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 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 36 [2025-04-13 21:44:13,028 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:44:13,058 INFO L225 Difference]: With dead ends: 5114 [2025-04-13 21:44:13,058 INFO L226 Difference]: Without dead ends: 2334 [2025-04-13 21:44:13,067 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-04-13 21:44:13,067 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 71 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:44:13,069 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 31 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 21:44:13,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2025-04-13 21:44:13,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2334. [2025-04-13 21:44:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2333 states have (on average 3.6005143591941704) internal successors, (8400), 2333 states have internal predecessors, (8400), 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 21:44:13,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 8400 transitions. [2025-04-13 21:44:13,129 INFO L79 Accepts]: Start accepts. Automaton has 2334 states and 8400 transitions. Word has length 36 [2025-04-13 21:44:13,130 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:44:13,130 INFO L485 AbstractCegarLoop]: Abstraction has 2334 states and 8400 transitions. [2025-04-13 21:44:13,130 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 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 21:44:13,130 INFO L278 IsEmpty]: Start isEmpty. Operand 2334 states and 8400 transitions. [2025-04-13 21:44:13,134 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 21:44:13,134 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:44:13,134 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:44:13,135 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-13 21:44:13,135 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:44:13,135 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:44:13,135 INFO L85 PathProgramCache]: Analyzing trace with hash -376812382, now seen corresponding path program 4 times [2025-04-13 21:44:13,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:44:13,135 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666546853] [2025-04-13 21:44:13,135 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 21:44:13,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:44:13,145 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-04-13 21:44:13,179 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 21:44:13,179 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 21:44:13,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:44:13,529 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 21:44:13,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:44:13,529 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666546853] [2025-04-13 21:44:13,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666546853] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:44:13,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:44:13,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 21:44:13,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961288510] [2025-04-13 21:44:13,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:44:13,529 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 21:44:13,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:44:13,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 21:44:13,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-13 21:44:13,530 INFO L87 Difference]: Start difference. First operand 2334 states and 8400 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 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 21:44:13,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:44:13,739 INFO L93 Difference]: Finished difference Result 4446 states and 15828 transitions. [2025-04-13 21:44:13,739 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 21:44:13,739 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 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 36 [2025-04-13 21:44:13,740 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:44:13,767 INFO L225 Difference]: With dead ends: 4446 [2025-04-13 21:44:13,767 INFO L226 Difference]: Without dead ends: 2938 [2025-04-13 21:44:13,771 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-04-13 21:44:13,772 INFO L437 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 21:44:13,772 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 50 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 21:44:13,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2025-04-13 21:44:13,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1722. [2025-04-13 21:44:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1721 states have (on average 3.4270772806507845) internal successors, (5898), 1721 states have internal predecessors, (5898), 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 21:44:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 5898 transitions. [2025-04-13 21:44:13,828 INFO L79 Accepts]: Start accepts. Automaton has 1722 states and 5898 transitions. Word has length 36 [2025-04-13 21:44:13,829 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:44:13,829 INFO L485 AbstractCegarLoop]: Abstraction has 1722 states and 5898 transitions. [2025-04-13 21:44:13,829 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 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 21:44:13,829 INFO L278 IsEmpty]: Start isEmpty. Operand 1722 states and 5898 transitions. [2025-04-13 21:44:13,832 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 21:44:13,832 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:44:13,832 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 21:44:13,832 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-13 21:44:13,833 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 21:44:13,833 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:44:13,833 INFO L85 PathProgramCache]: Analyzing trace with hash 38060992, now seen corresponding path program 5 times [2025-04-13 21:44:13,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:44:13,833 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348650712] [2025-04-13 21:44:13,833 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 21:44:13,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:44:13,840 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 1 equivalence classes. [2025-04-13 21:44:13,858 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 21:44:13,858 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 21:44:13,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:44:13,858 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 21:44:13,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-13 21:44:13,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 21:44:13,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:44:13,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:44:13,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 21:44:13,913 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 21:44:13,913 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2025-04-13 21:44:13,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2025-04-13 21:44:13,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-04-13 21:44:13,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2025-04-13 21:44:13,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2025-04-13 21:44:13,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2025-04-13 21:44:13,915 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-04-13 21:44:13,915 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-13 21:44:13,917 INFO L422 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1] [2025-04-13 21:44:14,020 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 21:44:14,021 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 21:44:14,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 09:44:14 BasicIcfg [2025-04-13 21:44:14,024 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 21:44:14,024 INFO L158 Benchmark]: Toolchain (without parser) took 13661.46ms. Allocated memory was 125.8MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 85.1MB in the beginning and 310.4MB in the end (delta: -225.3MB). Peak memory consumption was 908.1MB. Max. memory is 8.0GB. [2025-04-13 21:44:14,024 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:44:14,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.49ms. Allocated memory is still 125.8MB. Free memory was 85.1MB in the beginning and 59.3MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 21:44:14,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.32ms. Allocated memory is still 125.8MB. Free memory was 59.3MB in the beginning and 56.9MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 21:44:14,025 INFO L158 Benchmark]: Boogie Preprocessor took 46.54ms. Allocated memory is still 125.8MB. Free memory was 56.9MB in the beginning and 53.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 21:44:14,025 INFO L158 Benchmark]: IcfgBuilder took 728.01ms. Allocated memory is still 125.8MB. Free memory was 53.6MB in the beginning and 45.9MB in the end (delta: 7.7MB). Peak memory consumption was 40.2MB. Max. memory is 8.0GB. [2025-04-13 21:44:14,025 INFO L158 Benchmark]: TraceAbstraction took 12353.11ms. Allocated memory was 125.8MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 45.2MB in the beginning and 310.4MB in the end (delta: -265.1MB). Peak memory consumption was 867.9MB. Max. memory is 8.0GB. [2025-04-13 21:44:14,026 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 480.49ms. Allocated memory is still 125.8MB. Free memory was 85.1MB in the beginning and 59.3MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.32ms. Allocated memory is still 125.8MB. Free memory was 59.3MB in the beginning and 56.9MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.54ms. Allocated memory is still 125.8MB. Free memory was 56.9MB in the beginning and 53.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * IcfgBuilder took 728.01ms. Allocated memory is still 125.8MB. Free memory was 53.6MB in the beginning and 45.9MB in the end (delta: 7.7MB). Peak memory consumption was 40.2MB. Max. memory is 8.0GB. * TraceAbstraction took 12353.11ms. Allocated memory was 125.8MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 45.2MB in the beginning and 310.4MB in the end (delta: -265.1MB). Peak memory consumption was 867.9MB. 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p0_EAX = 0; [L714] 0 int __unbuffered_p1_EAX = 0; [L716] 0 int __unbuffered_p2_EAX = 0; [L718] 0 int __unbuffered_p3_EAX = 0; [L720] 0 int __unbuffered_p3_EBX = 0; [L722] 0 int a = 0; [L724] 0 int b = 0; [L725] 0 _Bool main$tmp_guard0; [L726] 0 _Bool main$tmp_guard1; [L728] 0 int x = 0; [L730] 0 int y = 0; [L732] 0 int z = 0; [L733] 0 _Bool z$flush_delayed; [L734] 0 int z$mem_tmp; [L735] 0 _Bool z$r_buff0_thd0; [L736] 0 _Bool z$r_buff0_thd1; [L737] 0 _Bool z$r_buff0_thd2; [L738] 0 _Bool z$r_buff0_thd3; [L739] 0 _Bool z$r_buff0_thd4; [L740] 0 _Bool z$r_buff1_thd0; [L741] 0 _Bool z$r_buff1_thd1; [L742] 0 _Bool z$r_buff1_thd2; [L743] 0 _Bool z$r_buff1_thd3; [L744] 0 _Bool z$r_buff1_thd4; [L745] 0 _Bool z$read_delayed; [L746] 0 int *z$read_delayed_var; [L747] 0 int z$w_buff0; [L748] 0 _Bool z$w_buff0_used; [L749] 0 int z$w_buff1; [L750] 0 _Bool z$w_buff1_used; [L751] 0 _Bool weak$$choice0; [L752] 0 _Bool weak$$choice2; [L858] 0 pthread_t t949; [L859] FCALL, FORK 0 pthread_create(&t949, ((void *)0), P0, ((void *)0)) VAL [\at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, b=0, main$tmp_guard0=0, main$tmp_guard1=0, t949=-3, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L860] 0 pthread_t t950; [L861] FCALL, FORK 0 pthread_create(&t950, ((void *)0), P1, ((void *)0)) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, b=0, main$tmp_guard0=0, main$tmp_guard1=0, t949=-3, t950=-2, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L862] 0 pthread_t t951; [L863] FCALL, FORK 0 pthread_create(&t951, ((void *)0), P2, ((void *)0)) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, t949=-3, t950=-2, t951=-1, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L864] 0 pthread_t t952; [L865] FCALL, FORK 0 pthread_create(&t952, ((void *)0), P3, ((void *)0)) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, t949=-3, t950=-2, t951=-1, t952=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L814] 4 z$w_buff1 = z$w_buff0 [L815] 4 z$w_buff0 = 1 [L816] 4 z$w_buff1_used = z$w_buff0_used [L817] 4 z$w_buff0_used = (_Bool)1 [L818] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L818] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L819] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L820] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L821] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L822] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L823] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L824] 4 z$r_buff0_thd4 = (_Bool)1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L827] 4 a = 1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L830] 4 __unbuffered_p3_EAX = a VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L833] 4 __unbuffered_p3_EBX = b VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L756] 1 b = 1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L759] 1 __unbuffered_p0_EAX = x VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L764] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L771] 2 x = 1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L774] 2 __unbuffered_p1_EAX = y VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L779] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L786] 3 y = 1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L789] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L790] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L791] 3 z$flush_delayed = weak$$choice2 [L792] 3 z$mem_tmp = z [L793] 3 z = !z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : z$w_buff1) [L794] 3 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : z$w_buff0)) [L795] 3 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff1 : z$w_buff1)) [L796] 3 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used)) [L797] 3 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L798] 3 z$r_buff0_thd3 = weak$$choice2 ? z$r_buff0_thd3 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$r_buff0_thd3 : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3)) [L799] 3 z$r_buff1_thd3 = weak$$choice2 ? z$r_buff1_thd3 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$r_buff1_thd3 : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L800] 3 __unbuffered_p2_EAX = z [L801] 3 z = z$flush_delayed ? z$mem_tmp : z [L802] 3 z$flush_delayed = (_Bool)0 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L807] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L836] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L837] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L838] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L839] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L840] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L843] 4 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L867] 0 main$tmp_guard0 = __unbuffered_cnt == 4 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, t949=-3, t950=-2, t951=-1, t952=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L869] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L869] RET 0 assume_abort_if_not(main$tmp_guard0) [L871] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L872] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L873] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L874] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L875] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, t949=-3, t950=-2, t951=-1, t952=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L878] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 0 && __unbuffered_p1_EAX == 0 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, t949=-3, t950=-2, t951=-1, t952=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L880] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(expression, Pre)=0, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] - UnprovableResult [Line: 18]: 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: 865]: 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. - UnprovableResult [Line: 861]: 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. - UnprovableResult [Line: 863]: 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. - UnprovableResult [Line: 859]: 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 9 procedures, 82 locations, 77 edges, 7 error locations. Started 1 CEGAR loops. OverallTime: 12.2s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.2s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1058 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1058 mSDsluCounter, 248 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 189 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1904 IncrementalHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 59 mSDtfsCounter, 1904 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25839occurred in iteration=0, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 1486 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 1426 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2025-04-13 21:44:14,045 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...