/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 18:42:08,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 18:42:08,979 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 18:42:08,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 18:42:08,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 18:42:09,007 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 18:42:09,008 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 18:42:09,008 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 18:42:09,008 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 18:42:09,008 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 18:42:09,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 18:42:09,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 18:42:09,008 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 18:42:09,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 18:42:09,008 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 18:42:09,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 18:42:09,009 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 18:42:09,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:42:09,011 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:42:09,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 18:42:09,011 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 18:42:09,012 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA [2025-04-13 18:42:09,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 18:42:09,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 18:42:09,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 18:42:09,229 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 18:42:09,229 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 18:42:09,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2025-04-13 18:42:10,501 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1d8fd50e/b2cb00a0ace6493eaba5ec63d165b935/FLAG0ed993cd9 [2025-04-13 18:42:10,662 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 18:42:10,674 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2025-04-13 18:42:10,686 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1d8fd50e/b2cb00a0ace6493eaba5ec63d165b935/FLAG0ed993cd9 [2025-04-13 18:42:11,702 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1d8fd50e/b2cb00a0ace6493eaba5ec63d165b935 [2025-04-13 18:42:11,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 18:42:11,705 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 18:42:11,706 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 18:42:11,706 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 18:42:11,709 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 18:42:11,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:11,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@908f394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11, skipping insertion in model container [2025-04-13 18:42:11,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:11,720 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 18:42:11,878 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c[2722,2735] [2025-04-13 18:42:11,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:42:11,904 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 18:42:11,937 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c[2722,2735] [2025-04-13 18:42:11,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:42:11,956 INFO L204 MainTranslator]: Completed translation [2025-04-13 18:42:11,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11 WrapperNode [2025-04-13 18:42:11,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 18:42:11,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 18:42:11,957 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 18:42:11,957 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 18:42:11,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:11,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:11,986 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 140 [2025-04-13 18:42:11,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 18:42:11,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 18:42:11,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 18:42:11,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 18:42:11,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:11,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:12,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:12,016 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-04-13 18:42:12,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:12,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:12,022 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:12,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:12,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:12,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:12,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:12,040 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 18:42:12,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 18:42:12,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 18:42:12,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 18:42:12,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (1/1) ... [2025-04-13 18:42:12,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:42:12,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:12,067 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 18:42:12,069 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 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 18:42:12,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 18:42:12,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 18:42:12,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 18:42:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 18:42:12,084 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 18:42:12,154 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 18:42:12,156 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 18:42:12,353 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 18:42:12,354 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 18:42:12,354 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 18:42:12,557 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 18:42:12,563 INFO L313 CfgBuilder]: Removed 1 assume(true) statements. [2025-04-13 18:42:12,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:42:12 BoogieIcfgContainer [2025-04-13 18:42:12,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 18:42:12,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 18:42:12,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 18:42:12,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 18:42:12,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 06:42:11" (1/3) ... [2025-04-13 18:42:12,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6a5610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:42:12, skipping insertion in model container [2025-04-13 18:42:12,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:42:11" (2/3) ... [2025-04-13 18:42:12,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6a5610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:42:12, skipping insertion in model container [2025-04-13 18:42:12,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:42:12" (3/3) ... [2025-04-13 18:42:12,571 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2025-04-13 18:42:12,580 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 18:42:12,581 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-queue-add-2.wvr.c that has 3 procedures, 21 locations, 23 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 18:42:12,582 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 18:42:12,637 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 18:42:12,662 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 25 transitions, 64 flow [2025-04-13 18:42:12,678 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 69 states, 68 states have (on average 2.661764705882353) internal successors, (181), 68 states have internal predecessors, (181), 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 18:42:12,699 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 18:42:12,709 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;@c16d5cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 18:42:12,709 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 18:42:12,712 INFO L278 IsEmpty]: Start isEmpty. Operand has 69 states, 68 states have (on average 2.661764705882353) internal successors, (181), 68 states have internal predecessors, (181), 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 18:42:12,717 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 18:42:12,717 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:12,718 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:12,718 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:12,721 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:12,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1265829407, now seen corresponding path program 1 times [2025-04-13 18:42:12,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:12,727 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124276283] [2025-04-13 18:42:12,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:42:12,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:12,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 18:42:12,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 18:42:12,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:12,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:12,876 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 18:42:12,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:12,878 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124276283] [2025-04-13 18:42:12,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124276283] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:42:12,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:42:12,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 18:42:12,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620026562] [2025-04-13 18:42:12,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:42:12,884 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 18:42:12,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:12,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 18:42:12,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 18:42:12,899 INFO L87 Difference]: Start difference. First operand has 69 states, 68 states have (on average 2.661764705882353) internal successors, (181), 68 states have internal predecessors, (181), 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 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 18:42:12,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:12,943 INFO L93 Difference]: Finished difference Result 84 states and 204 transitions. [2025-04-13 18:42:12,944 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-13 18:42:12,945 INFO L79 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 18:42:12,945 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:12,951 INFO L225 Difference]: With dead ends: 84 [2025-04-13 18:42:12,951 INFO L226 Difference]: Without dead ends: 69 [2025-04-13 18:42:12,953 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 18:42:12,956 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:12,956 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:42:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-04-13 18:42:12,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2025-04-13 18:42:12,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.4705882352941178) internal successors, (168), 68 states have internal predecessors, (168), 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 18:42:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 168 transitions. [2025-04-13 18:42:12,985 INFO L79 Accepts]: Start accepts. Automaton has 69 states and 168 transitions. Word has length 14 [2025-04-13 18:42:12,985 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:12,985 INFO L485 AbstractCegarLoop]: Abstraction has 69 states and 168 transitions. [2025-04-13 18:42:12,985 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 18:42:12,985 INFO L278 IsEmpty]: Start isEmpty. Operand 69 states and 168 transitions. [2025-04-13 18:42:12,986 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:42:12,986 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:12,986 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:12,986 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 18:42:12,986 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:12,987 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:12,987 INFO L85 PathProgramCache]: Analyzing trace with hash -614639323, now seen corresponding path program 1 times [2025-04-13 18:42:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:12,987 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752203847] [2025-04-13 18:42:12,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:42:12,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:13,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 18:42:13,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:42:13,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:13,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:13,201 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 18:42:13,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:13,201 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752203847] [2025-04-13 18:42:13,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752203847] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:42:13,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:42:13,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:42:13,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849574225] [2025-04-13 18:42:13,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:42:13,202 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:42:13,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:13,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:42:13,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:42:13,203 INFO L87 Difference]: Start difference. First operand 69 states and 168 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 18:42:13,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:13,278 INFO L93 Difference]: Finished difference Result 151 states and 370 transitions. [2025-04-13 18:42:13,278 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:42:13,278 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 18:42:13,278 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:13,279 INFO L225 Difference]: With dead ends: 151 [2025-04-13 18:42:13,279 INFO L226 Difference]: Without dead ends: 70 [2025-04-13 18:42:13,279 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:42:13,280 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:13,280 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:42:13,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-04-13 18:42:13,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2025-04-13 18:42:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.449275362318841) internal successors, (169), 69 states have internal predecessors, (169), 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 18:42:13,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 169 transitions. [2025-04-13 18:42:13,286 INFO L79 Accepts]: Start accepts. Automaton has 70 states and 169 transitions. Word has length 15 [2025-04-13 18:42:13,287 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:13,287 INFO L485 AbstractCegarLoop]: Abstraction has 70 states and 169 transitions. [2025-04-13 18:42:13,287 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 18:42:13,287 INFO L278 IsEmpty]: Start isEmpty. Operand 70 states and 169 transitions. [2025-04-13 18:42:13,287 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:42:13,287 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:13,287 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:13,288 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 18:42:13,289 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:13,291 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:13,291 INFO L85 PathProgramCache]: Analyzing trace with hash -313156406, now seen corresponding path program 1 times [2025-04-13 18:42:13,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:13,291 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414478291] [2025-04-13 18:42:13,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:42:13,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:13,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:42:13,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:42:13,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:13,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:42:13,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:13,497 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414478291] [2025-04-13 18:42:13,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414478291] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:42:13,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:42:13,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 18:42:13,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792072634] [2025-04-13 18:42:13,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:42:13,498 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 18:42:13,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:13,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 18:42:13,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 18:42:13,499 INFO L87 Difference]: Start difference. First operand 70 states and 169 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 18:42:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:13,623 INFO L93 Difference]: Finished difference Result 147 states and 345 transitions. [2025-04-13 18:42:13,624 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:42:13,624 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2025-04-13 18:42:13,624 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:13,625 INFO L225 Difference]: With dead ends: 147 [2025-04-13 18:42:13,625 INFO L226 Difference]: Without dead ends: 138 [2025-04-13 18:42:13,625 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 18:42:13,626 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:13,626 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:42:13,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-04-13 18:42:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 103. [2025-04-13 18:42:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 2.3823529411764706) internal successors, (243), 102 states have internal predecessors, (243), 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 18:42:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 243 transitions. [2025-04-13 18:42:13,633 INFO L79 Accepts]: Start accepts. Automaton has 103 states and 243 transitions. Word has length 16 [2025-04-13 18:42:13,633 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:13,633 INFO L485 AbstractCegarLoop]: Abstraction has 103 states and 243 transitions. [2025-04-13 18:42:13,633 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 18:42:13,633 INFO L278 IsEmpty]: Start isEmpty. Operand 103 states and 243 transitions. [2025-04-13 18:42:13,633 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:42:13,634 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:13,634 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:13,634 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 18:42:13,634 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:13,634 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1735909090, now seen corresponding path program 1 times [2025-04-13 18:42:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:13,634 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810131518] [2025-04-13 18:42:13,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:42:13,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:13,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:42:13,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:42:13,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:13,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:13,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:13,792 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810131518] [2025-04-13 18:42:13,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810131518] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:13,792 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929173731] [2025-04-13 18:42:13,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:42:13,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:13,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:13,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:13,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 18:42:13,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:42:13,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:42:13,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:13,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:13,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:42:13,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:13,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:13,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929173731] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:13,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:13,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-04-13 18:42:13,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241426577] [2025-04-13 18:42:13,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:13,986 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 18:42:13,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:13,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 18:42:13,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:42:13,987 INFO L87 Difference]: Start difference. First operand 103 states and 243 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 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 18:42:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:14,096 INFO L93 Difference]: Finished difference Result 262 states and 622 transitions. [2025-04-13 18:42:14,096 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:42:14,096 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 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 18 [2025-04-13 18:42:14,096 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:14,097 INFO L225 Difference]: With dead ends: 262 [2025-04-13 18:42:14,097 INFO L226 Difference]: Without dead ends: 153 [2025-04-13 18:42:14,098 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:42:14,099 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:14,099 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:42:14,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-04-13 18:42:14,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 117. [2025-04-13 18:42:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 2.3275862068965516) internal successors, (270), 116 states have internal predecessors, (270), 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 18:42:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 270 transitions. [2025-04-13 18:42:14,112 INFO L79 Accepts]: Start accepts. Automaton has 117 states and 270 transitions. Word has length 18 [2025-04-13 18:42:14,112 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:14,112 INFO L485 AbstractCegarLoop]: Abstraction has 117 states and 270 transitions. [2025-04-13 18:42:14,112 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 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 18:42:14,112 INFO L278 IsEmpty]: Start isEmpty. Operand 117 states and 270 transitions. [2025-04-13 18:42:14,113 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:42:14,113 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:14,113 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:14,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-13 18:42:14,313 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:14,314 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:14,314 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:14,314 INFO L85 PathProgramCache]: Analyzing trace with hash -358554868, now seen corresponding path program 1 times [2025-04-13 18:42:14,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:14,314 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017237159] [2025-04-13 18:42:14,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:42:14,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:14,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:42:14,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:42:14,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:14,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:42:14,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:14,389 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017237159] [2025-04-13 18:42:14,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017237159] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:42:14,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:42:14,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:42:14,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898782902] [2025-04-13 18:42:14,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:42:14,390 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:42:14,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:14,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:42:14,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:42:14,390 INFO L87 Difference]: Start difference. First operand 117 states and 270 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 18:42:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:14,451 INFO L93 Difference]: Finished difference Result 243 states and 569 transitions. [2025-04-13 18:42:14,451 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:42:14,451 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2025-04-13 18:42:14,452 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:14,452 INFO L225 Difference]: With dead ends: 243 [2025-04-13 18:42:14,453 INFO L226 Difference]: Without dead ends: 148 [2025-04-13 18:42:14,453 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:42:14,453 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:14,454 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:42:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-04-13 18:42:14,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 122. [2025-04-13 18:42:14,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.4545454545454546) internal successors, (297), 121 states have internal predecessors, (297), 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 18:42:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 297 transitions. [2025-04-13 18:42:14,460 INFO L79 Accepts]: Start accepts. Automaton has 122 states and 297 transitions. Word has length 18 [2025-04-13 18:42:14,460 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:14,460 INFO L485 AbstractCegarLoop]: Abstraction has 122 states and 297 transitions. [2025-04-13 18:42:14,460 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 18:42:14,460 INFO L278 IsEmpty]: Start isEmpty. Operand 122 states and 297 transitions. [2025-04-13 18:42:14,461 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:42:14,461 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:14,461 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:14,461 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 18:42:14,461 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:14,461 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:14,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1659418819, now seen corresponding path program 2 times [2025-04-13 18:42:14,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:14,461 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808477291] [2025-04-13 18:42:14,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:42:14,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:14,468 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:42:14,481 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 19 statements. [2025-04-13 18:42:14,481 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 18:42:14,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:42:14,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:14,561 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808477291] [2025-04-13 18:42:14,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808477291] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:42:14,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:42:14,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 18:42:14,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593286881] [2025-04-13 18:42:14,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:42:14,561 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 18:42:14,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:14,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 18:42:14,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 18:42:14,562 INFO L87 Difference]: Start difference. First operand 122 states and 297 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 18:42:14,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:14,645 INFO L93 Difference]: Finished difference Result 182 states and 461 transitions. [2025-04-13 18:42:14,645 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:42:14,645 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 18:42:14,646 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:14,647 INFO L225 Difference]: With dead ends: 182 [2025-04-13 18:42:14,647 INFO L226 Difference]: Without dead ends: 169 [2025-04-13 18:42:14,647 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 18:42:14,647 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:14,647 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:42:14,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-04-13 18:42:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2025-04-13 18:42:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.4702380952380953) internal successors, (415), 168 states have internal predecessors, (415), 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 18:42:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 415 transitions. [2025-04-13 18:42:14,663 INFO L79 Accepts]: Start accepts. Automaton has 169 states and 415 transitions. Word has length 19 [2025-04-13 18:42:14,663 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:14,663 INFO L485 AbstractCegarLoop]: Abstraction has 169 states and 415 transitions. [2025-04-13 18:42:14,663 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 18:42:14,663 INFO L278 IsEmpty]: Start isEmpty. Operand 169 states and 415 transitions. [2025-04-13 18:42:14,664 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:42:14,664 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:14,664 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:14,664 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 18:42:14,664 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:14,665 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:14,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1513655441, now seen corresponding path program 1 times [2025-04-13 18:42:14,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:14,665 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854324703] [2025-04-13 18:42:14,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:42:14,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:14,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:42:14,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:42:14,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:14,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:15,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:15,274 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854324703] [2025-04-13 18:42:15,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854324703] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:15,274 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141396423] [2025-04-13 18:42:15,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:42:15,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:15,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:15,276 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:15,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-13 18:42:15,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:42:15,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:42:15,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:15,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:15,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-04-13 18:42:15,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:15,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:15,960 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:42:15,961 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2025-04-13 18:42:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:16,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141396423] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:16,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:16,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 31 [2025-04-13 18:42:16,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327116421] [2025-04-13 18:42:16,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:16,252 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-13 18:42:16,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:16,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-13 18:42:16,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=918, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:42:16,253 INFO L87 Difference]: Start difference. First operand 169 states and 415 transitions. Second operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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 18:42:18,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:18,167 INFO L93 Difference]: Finished difference Result 385 states and 886 transitions. [2025-04-13 18:42:18,167 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-04-13 18:42:18,167 INFO L79 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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 21 [2025-04-13 18:42:18,167 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:18,169 INFO L225 Difference]: With dead ends: 385 [2025-04-13 18:42:18,169 INFO L226 Difference]: Without dead ends: 347 [2025-04-13 18:42:18,170 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=489, Invalid=3171, Unknown=0, NotChecked=0, Total=3660 [2025-04-13 18:42:18,170 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 197 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:18,171 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 0 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 18:42:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2025-04-13 18:42:18,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 232. [2025-04-13 18:42:18,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.4155844155844157) internal successors, (558), 231 states have internal predecessors, (558), 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 18:42:18,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 558 transitions. [2025-04-13 18:42:18,194 INFO L79 Accepts]: Start accepts. Automaton has 232 states and 558 transitions. Word has length 21 [2025-04-13 18:42:18,194 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:18,194 INFO L485 AbstractCegarLoop]: Abstraction has 232 states and 558 transitions. [2025-04-13 18:42:18,194 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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 18:42:18,194 INFO L278 IsEmpty]: Start isEmpty. Operand 232 states and 558 transitions. [2025-04-13 18:42:18,195 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:42:18,195 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:18,195 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:18,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-13 18:42:18,396 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-04-13 18:42:18,396 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:18,397 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:18,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2033024025, now seen corresponding path program 2 times [2025-04-13 18:42:18,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:18,397 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266149561] [2025-04-13 18:42:18,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:42:18,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:18,402 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:42:18,413 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:42:18,413 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:42:18,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:18,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:18,844 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266149561] [2025-04-13 18:42:18,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266149561] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:18,844 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616349493] [2025-04-13 18:42:18,844 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:42:18,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:18,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:18,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:18,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-13 18:42:18,881 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:42:18,896 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:42:18,896 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:42:18,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:18,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 18:42:18,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:19,058 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2025-04-13 18:42:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:19,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:19,282 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:42:19,282 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2025-04-13 18:42:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:19,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616349493] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:19,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:19,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 31 [2025-04-13 18:42:19,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660087748] [2025-04-13 18:42:19,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:19,466 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-13 18:42:19,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:19,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-13 18:42:19,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:42:19,467 INFO L87 Difference]: Start difference. First operand 232 states and 558 transitions. Second operand has 33 states, 32 states have (on average 1.90625) internal successors, (61), 32 states have internal predecessors, (61), 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 18:42:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:20,639 INFO L93 Difference]: Finished difference Result 348 states and 806 transitions. [2025-04-13 18:42:20,640 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 18:42:20,640 INFO L79 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.90625) internal successors, (61), 32 states have internal predecessors, (61), 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 21 [2025-04-13 18:42:20,640 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:20,641 INFO L225 Difference]: With dead ends: 348 [2025-04-13 18:42:20,641 INFO L226 Difference]: Without dead ends: 301 [2025-04-13 18:42:20,642 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=604, Invalid=2702, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 18:42:20,643 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 139 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:20,643 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 0 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:42:20,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2025-04-13 18:42:20,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 240. [2025-04-13 18:42:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 2.418410041841004) internal successors, (578), 239 states have internal predecessors, (578), 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 18:42:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 578 transitions. [2025-04-13 18:42:20,667 INFO L79 Accepts]: Start accepts. Automaton has 240 states and 578 transitions. Word has length 21 [2025-04-13 18:42:20,668 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:20,668 INFO L485 AbstractCegarLoop]: Abstraction has 240 states and 578 transitions. [2025-04-13 18:42:20,668 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.90625) internal successors, (61), 32 states have internal predecessors, (61), 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 18:42:20,668 INFO L278 IsEmpty]: Start isEmpty. Operand 240 states and 578 transitions. [2025-04-13 18:42:20,669 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:42:20,669 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:20,669 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:20,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-13 18:42:20,873 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:20,873 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:20,873 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:20,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1799378189, now seen corresponding path program 3 times [2025-04-13 18:42:20,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:20,873 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445994135] [2025-04-13 18:42:20,873 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:42:20,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:20,878 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:42:20,894 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:42:20,894 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:42:20,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:21,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:21,286 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445994135] [2025-04-13 18:42:21,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445994135] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:21,286 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279755854] [2025-04-13 18:42:21,286 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:42:21,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:21,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:21,289 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:21,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-13 18:42:21,331 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:42:21,345 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:42:21,345 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:42:21,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:21,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-04-13 18:42:21,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:21,525 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-04-13 18:42:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:21,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:21,734 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:42:21,735 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2025-04-13 18:42:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:21,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279755854] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:21,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:21,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 31 [2025-04-13 18:42:21,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131193641] [2025-04-13 18:42:21,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:21,923 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-13 18:42:21,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:21,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-13 18:42:21,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:42:21,924 INFO L87 Difference]: Start difference. First operand 240 states and 578 transitions. Second operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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 18:42:23,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:23,124 INFO L93 Difference]: Finished difference Result 444 states and 1012 transitions. [2025-04-13 18:42:23,124 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-04-13 18:42:23,124 INFO L79 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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 21 [2025-04-13 18:42:23,124 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:23,127 INFO L225 Difference]: With dead ends: 444 [2025-04-13 18:42:23,127 INFO L226 Difference]: Without dead ends: 369 [2025-04-13 18:42:23,128 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=479, Invalid=2827, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 18:42:23,128 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 152 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:23,128 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 0 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:42:23,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2025-04-13 18:42:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 256. [2025-04-13 18:42:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 2.4313725490196076) internal successors, (620), 255 states have internal predecessors, (620), 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 18:42:23,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 620 transitions. [2025-04-13 18:42:23,143 INFO L79 Accepts]: Start accepts. Automaton has 256 states and 620 transitions. Word has length 21 [2025-04-13 18:42:23,143 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:23,143 INFO L485 AbstractCegarLoop]: Abstraction has 256 states and 620 transitions. [2025-04-13 18:42:23,143 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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 18:42:23,143 INFO L278 IsEmpty]: Start isEmpty. Operand 256 states and 620 transitions. [2025-04-13 18:42:23,144 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-13 18:42:23,144 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:23,144 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:23,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-13 18:42:23,345 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:23,346 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:23,346 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:23,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1644829696, now seen corresponding path program 4 times [2025-04-13 18:42:23,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:23,346 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603949895] [2025-04-13 18:42:23,346 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:42:23,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:23,351 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-13 18:42:23,363 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:42:23,363 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:42:23,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:42:23,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:23,488 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603949895] [2025-04-13 18:42:23,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603949895] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:23,488 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411149007] [2025-04-13 18:42:23,488 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:42:23,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:23,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:23,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:23,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-13 18:42:23,530 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-04-13 18:42:23,547 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:42:23,547 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:42:23,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:23,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-13 18:42:23,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:42:23,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:23,720 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:42:23,721 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2025-04-13 18:42:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:42:23,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411149007] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:23,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:23,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 17 [2025-04-13 18:42:23,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987016683] [2025-04-13 18:42:23,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:23,758 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:42:23,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:23,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:42:23,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:42:23,759 INFO L87 Difference]: Start difference. First operand 256 states and 620 transitions. Second operand has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 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 18:42:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:23,963 INFO L93 Difference]: Finished difference Result 330 states and 770 transitions. [2025-04-13 18:42:23,963 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 18:42:23,963 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 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 22 [2025-04-13 18:42:23,964 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:23,965 INFO L225 Difference]: With dead ends: 330 [2025-04-13 18:42:23,965 INFO L226 Difference]: Without dead ends: 304 [2025-04-13 18:42:23,965 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:42:23,966 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:23,966 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:42:23,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2025-04-13 18:42:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 243. [2025-04-13 18:42:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 2.4421487603305785) internal successors, (591), 242 states have internal predecessors, (591), 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 18:42:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 591 transitions. [2025-04-13 18:42:23,981 INFO L79 Accepts]: Start accepts. Automaton has 243 states and 591 transitions. Word has length 22 [2025-04-13 18:42:23,981 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:23,981 INFO L485 AbstractCegarLoop]: Abstraction has 243 states and 591 transitions. [2025-04-13 18:42:23,981 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 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 18:42:23,981 INFO L278 IsEmpty]: Start isEmpty. Operand 243 states and 591 transitions. [2025-04-13 18:42:23,982 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-13 18:42:23,982 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:23,982 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:23,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-13 18:42:24,186 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-04-13 18:42:24,186 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:24,186 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:24,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1773556914, now seen corresponding path program 5 times [2025-04-13 18:42:24,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:24,186 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936967655] [2025-04-13 18:42:24,186 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:42:24,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:24,191 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 3 equivalence classes. [2025-04-13 18:42:24,206 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:42:24,206 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:42:24,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:24,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:24,684 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936967655] [2025-04-13 18:42:24,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936967655] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:24,684 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778472855] [2025-04-13 18:42:24,684 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:42:24,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:24,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:24,686 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:24,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-13 18:42:24,721 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 3 equivalence classes. [2025-04-13 18:42:24,737 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:42:24,737 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:42:24,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:24,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 18:42:24,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:42:24,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:24,937 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:42:24,937 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2025-04-13 18:42:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:42:24,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778472855] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:24,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 18:42:24,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 8] total 24 [2025-04-13 18:42:24,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856795821] [2025-04-13 18:42:24,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:42:24,973 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 18:42:24,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:24,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 18:42:24,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:42:24,974 INFO L87 Difference]: Start difference. First operand 243 states and 591 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:25,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:25,089 INFO L93 Difference]: Finished difference Result 281 states and 657 transitions. [2025-04-13 18:42:25,090 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 18:42:25,090 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-04-13 18:42:25,090 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:25,092 INFO L225 Difference]: With dead ends: 281 [2025-04-13 18:42:25,092 INFO L226 Difference]: Without dead ends: 260 [2025-04-13 18:42:25,092 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:42:25,092 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:25,093 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:42:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2025-04-13 18:42:25,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 241. [2025-04-13 18:42:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.441666666666667) internal successors, (586), 240 states have internal predecessors, (586), 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 18:42:25,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 586 transitions. [2025-04-13 18:42:25,106 INFO L79 Accepts]: Start accepts. Automaton has 241 states and 586 transitions. Word has length 22 [2025-04-13 18:42:25,106 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:25,106 INFO L485 AbstractCegarLoop]: Abstraction has 241 states and 586 transitions. [2025-04-13 18:42:25,107 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:25,107 INFO L278 IsEmpty]: Start isEmpty. Operand 241 states and 586 transitions. [2025-04-13 18:42:25,107 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:42:25,107 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:25,107 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:25,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-04-13 18:42:25,307 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:25,308 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:25,308 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:25,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1768842493, now seen corresponding path program 1 times [2025-04-13 18:42:25,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:25,308 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901616766] [2025-04-13 18:42:25,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:42:25,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:25,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-13 18:42:25,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:42:25,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:25,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:42:25,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:25,389 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901616766] [2025-04-13 18:42:25,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901616766] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:25,389 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908173821] [2025-04-13 18:42:25,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:42:25,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:25,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:25,391 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:25,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-13 18:42:25,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-13 18:42:25,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:42:25,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:25,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:25,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:42:25,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:42:25,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:42:25,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908173821] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:25,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:25,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-04-13 18:42:25,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011126237] [2025-04-13 18:42:25,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:25,597 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:42:25,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:25,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:42:25,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:42:25,597 INFO L87 Difference]: Start difference. First operand 241 states and 586 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 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 18:42:25,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:25,700 INFO L93 Difference]: Finished difference Result 489 states and 1174 transitions. [2025-04-13 18:42:25,700 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:42:25,700 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 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 23 [2025-04-13 18:42:25,700 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:25,701 INFO L225 Difference]: With dead ends: 489 [2025-04-13 18:42:25,701 INFO L226 Difference]: Without dead ends: 255 [2025-04-13 18:42:25,702 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:42:25,702 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:25,702 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:42:25,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2025-04-13 18:42:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 203. [2025-04-13 18:42:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 2.3465346534653464) internal successors, (474), 202 states have internal predecessors, (474), 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 18:42:25,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 474 transitions. [2025-04-13 18:42:25,717 INFO L79 Accepts]: Start accepts. Automaton has 203 states and 474 transitions. Word has length 23 [2025-04-13 18:42:25,717 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:25,717 INFO L485 AbstractCegarLoop]: Abstraction has 203 states and 474 transitions. [2025-04-13 18:42:25,717 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 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 18:42:25,717 INFO L278 IsEmpty]: Start isEmpty. Operand 203 states and 474 transitions. [2025-04-13 18:42:25,719 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:42:25,719 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:25,719 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:25,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-04-13 18:42:25,919 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:25,919 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:25,920 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:25,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1308075121, now seen corresponding path program 6 times [2025-04-13 18:42:25,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:25,920 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857887824] [2025-04-13 18:42:25,920 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:42:25,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:25,929 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:42:25,942 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:42:25,942 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:42:25,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:42:25,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:25,977 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857887824] [2025-04-13 18:42:25,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857887824] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:42:25,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:42:25,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 18:42:25,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752633910] [2025-04-13 18:42:25,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:42:25,978 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 18:42:25,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:25,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 18:42:25,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:42:25,978 INFO L87 Difference]: Start difference. First operand 203 states and 474 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:26,060 INFO L93 Difference]: Finished difference Result 388 states and 918 transitions. [2025-04-13 18:42:26,060 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 18:42:26,060 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:42:26,060 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:26,062 INFO L225 Difference]: With dead ends: 388 [2025-04-13 18:42:26,062 INFO L226 Difference]: Without dead ends: 294 [2025-04-13 18:42:26,062 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-04-13 18:42:26,062 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:26,063 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:42:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2025-04-13 18:42:26,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 210. [2025-04-13 18:42:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.4976076555023923) internal successors, (522), 209 states have internal predecessors, (522), 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 18:42:26,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 522 transitions. [2025-04-13 18:42:26,073 INFO L79 Accepts]: Start accepts. Automaton has 210 states and 522 transitions. Word has length 23 [2025-04-13 18:42:26,073 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:26,073 INFO L485 AbstractCegarLoop]: Abstraction has 210 states and 522 transitions. [2025-04-13 18:42:26,073 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:26,073 INFO L278 IsEmpty]: Start isEmpty. Operand 210 states and 522 transitions. [2025-04-13 18:42:26,073 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-04-13 18:42:26,073 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:26,074 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:26,074 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-13 18:42:26,074 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:26,074 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash -231380226, now seen corresponding path program 2 times [2025-04-13 18:42:26,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:26,074 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561381384] [2025-04-13 18:42:26,074 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:42:26,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:26,078 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-04-13 18:42:26,085 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 18:42:26,085 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:42:26,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:26,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:26,264 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561381384] [2025-04-13 18:42:26,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561381384] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:26,264 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69108267] [2025-04-13 18:42:26,264 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:42:26,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:26,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:26,266 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:26,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-13 18:42:26,307 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-04-13 18:42:26,323 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-04-13 18:42:26,323 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:42:26,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:26,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-04-13 18:42:26,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:26,487 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:26,543 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:42:26,543 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2025-04-13 18:42:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:26,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69108267] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:26,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:26,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2025-04-13 18:42:26,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755633437] [2025-04-13 18:42:26,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:26,680 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 18:42:26,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:26,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 18:42:26,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:42:26,681 INFO L87 Difference]: Start difference. First operand 210 states and 522 transitions. Second operand has 30 states, 30 states have (on average 2.1) internal successors, (63), 29 states have internal predecessors, (63), 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 18:42:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:29,080 INFO L93 Difference]: Finished difference Result 1457 states and 3958 transitions. [2025-04-13 18:42:29,081 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-04-13 18:42:29,081 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1) internal successors, (63), 29 states have internal predecessors, (63), 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 18:42:29,081 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:29,087 INFO L225 Difference]: With dead ends: 1457 [2025-04-13 18:42:29,087 INFO L226 Difference]: Without dead ends: 1411 [2025-04-13 18:42:29,088 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1733 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1358, Invalid=5448, Unknown=0, NotChecked=0, Total=6806 [2025-04-13 18:42:29,089 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 328 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3151 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:29,089 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 0 Invalid, 3232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3151 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 18:42:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2025-04-13 18:42:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 679. [2025-04-13 18:42:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 2.803834808259587) internal successors, (1901), 678 states have internal predecessors, (1901), 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 18:42:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1901 transitions. [2025-04-13 18:42:29,144 INFO L79 Accepts]: Start accepts. Automaton has 679 states and 1901 transitions. Word has length 24 [2025-04-13 18:42:29,144 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:29,144 INFO L485 AbstractCegarLoop]: Abstraction has 679 states and 1901 transitions. [2025-04-13 18:42:29,144 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.1) internal successors, (63), 29 states have internal predecessors, (63), 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 18:42:29,144 INFO L278 IsEmpty]: Start isEmpty. Operand 679 states and 1901 transitions. [2025-04-13 18:42:29,145 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:42:29,145 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:29,145 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:29,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-04-13 18:42:29,350 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-04-13 18:42:29,350 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:29,350 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:29,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1995488141, now seen corresponding path program 3 times [2025-04-13 18:42:29,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:29,350 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091004401] [2025-04-13 18:42:29,350 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:42:29,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:29,356 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-04-13 18:42:29,362 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 25 statements. [2025-04-13 18:42:29,362 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:42:29,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:42:29,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:29,445 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091004401] [2025-04-13 18:42:29,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091004401] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:29,445 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463829453] [2025-04-13 18:42:29,445 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:42:29,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:29,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:29,447 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:29,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-13 18:42:29,489 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-04-13 18:42:29,504 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 25 statements. [2025-04-13 18:42:29,504 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:42:29,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:29,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:42:29,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:42:29,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:29,551 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:42:29,551 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2025-04-13 18:42:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:42:29,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463829453] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:29,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:29,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2025-04-13 18:42:29,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466876280] [2025-04-13 18:42:29,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:29,565 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 18:42:29,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:29,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 18:42:29,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:42:29,566 INFO L87 Difference]: Start difference. First operand 679 states and 1901 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 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 18:42:29,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:29,823 INFO L93 Difference]: Finished difference Result 1111 states and 3019 transitions. [2025-04-13 18:42:29,823 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 18:42:29,823 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 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 25 [2025-04-13 18:42:29,823 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:29,828 INFO L225 Difference]: With dead ends: 1111 [2025-04-13 18:42:29,828 INFO L226 Difference]: Without dead ends: 1098 [2025-04-13 18:42:29,828 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:42:29,828 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 114 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:29,829 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 0 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:42:29,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2025-04-13 18:42:29,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 671. [2025-04-13 18:42:29,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 670 states have (on average 2.7761194029850746) internal successors, (1860), 670 states have internal predecessors, (1860), 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 18:42:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1860 transitions. [2025-04-13 18:42:29,870 INFO L79 Accepts]: Start accepts. Automaton has 671 states and 1860 transitions. Word has length 25 [2025-04-13 18:42:29,871 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:29,871 INFO L485 AbstractCegarLoop]: Abstraction has 671 states and 1860 transitions. [2025-04-13 18:42:29,871 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 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 18:42:29,871 INFO L278 IsEmpty]: Start isEmpty. Operand 671 states and 1860 transitions. [2025-04-13 18:42:29,872 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:42:29,872 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:29,872 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:29,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-04-13 18:42:30,072 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-13 18:42:30,073 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:30,073 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1828826688, now seen corresponding path program 4 times [2025-04-13 18:42:30,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:30,073 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994287009] [2025-04-13 18:42:30,073 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:42:30,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:30,079 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:42:30,091 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:42:30,092 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:42:30,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:30,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:30,677 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994287009] [2025-04-13 18:42:30,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994287009] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:30,677 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693885935] [2025-04-13 18:42:30,678 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:42:30,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:30,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:30,679 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:30,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-13 18:42:30,717 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:42:30,735 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:42:30,735 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:42:30,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:30,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 18:42:30,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:31,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:31,431 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:42:31,431 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-04-13 18:42:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:31,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693885935] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:31,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:31,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2025-04-13 18:42:31,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100826375] [2025-04-13 18:42:31,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:31,670 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:42:31,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:31,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:42:31,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2004, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:42:31,671 INFO L87 Difference]: Start difference. First operand 671 states and 1860 transitions. Second operand has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:42:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:36,307 INFO L93 Difference]: Finished difference Result 1098 states and 2828 transitions. [2025-04-13 18:42:36,310 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2025-04-13 18:42:36,311 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 26 [2025-04-13 18:42:36,311 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:36,315 INFO L225 Difference]: With dead ends: 1098 [2025-04-13 18:42:36,315 INFO L226 Difference]: Without dead ends: 1047 [2025-04-13 18:42:36,317 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3235 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1195, Invalid=10361, Unknown=0, NotChecked=0, Total=11556 [2025-04-13 18:42:36,317 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 641 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:36,317 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 0 Invalid, 3502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 18:42:36,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2025-04-13 18:42:36,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 735. [2025-04-13 18:42:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 2.7547683923705724) internal successors, (2022), 734 states have internal predecessors, (2022), 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 18:42:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 2022 transitions. [2025-04-13 18:42:36,370 INFO L79 Accepts]: Start accepts. Automaton has 735 states and 2022 transitions. Word has length 26 [2025-04-13 18:42:36,370 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:36,370 INFO L485 AbstractCegarLoop]: Abstraction has 735 states and 2022 transitions. [2025-04-13 18:42:36,370 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:42:36,370 INFO L278 IsEmpty]: Start isEmpty. Operand 735 states and 2022 transitions. [2025-04-13 18:42:36,371 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:42:36,371 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:36,371 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:36,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-13 18:42:36,574 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-04-13 18:42:36,574 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:36,574 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:36,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1121721332, now seen corresponding path program 5 times [2025-04-13 18:42:36,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:36,575 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766811547] [2025-04-13 18:42:36,575 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:42:36,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:36,579 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:42:36,587 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:42:36,591 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:42:36,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:37,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:37,422 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766811547] [2025-04-13 18:42:37,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766811547] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:37,422 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484440063] [2025-04-13 18:42:37,422 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:42:37,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:37,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:37,424 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:37,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-13 18:42:37,461 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:42:37,479 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:42:37,479 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:42:37,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:37,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-13 18:42:37,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:42:37,786 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:38,025 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:42:38,025 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 56 [2025-04-13 18:42:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:42:38,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484440063] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:38,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:38,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 10] total 35 [2025-04-13 18:42:38,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254624144] [2025-04-13 18:42:38,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:38,080 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 18:42:38,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:38,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 18:42:38,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:42:38,081 INFO L87 Difference]: Start difference. First operand 735 states and 2022 transitions. Second operand has 37 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 36 states have internal predecessors, (66), 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 18:42:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:39,721 INFO L93 Difference]: Finished difference Result 1038 states and 2722 transitions. [2025-04-13 18:42:39,721 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-04-13 18:42:39,721 INFO L79 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 36 states have internal predecessors, (66), 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 26 [2025-04-13 18:42:39,721 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:39,725 INFO L225 Difference]: With dead ends: 1038 [2025-04-13 18:42:39,725 INFO L226 Difference]: Without dead ends: 973 [2025-04-13 18:42:39,726 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=317, Invalid=3843, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 18:42:39,726 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 257 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:39,726 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 0 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:42:39,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2025-04-13 18:42:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 757. [2025-04-13 18:42:39,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 756 states have (on average 2.757936507936508) internal successors, (2085), 756 states have internal predecessors, (2085), 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 18:42:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 2085 transitions. [2025-04-13 18:42:39,790 INFO L79 Accepts]: Start accepts. Automaton has 757 states and 2085 transitions. Word has length 26 [2025-04-13 18:42:39,790 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:39,791 INFO L485 AbstractCegarLoop]: Abstraction has 757 states and 2085 transitions. [2025-04-13 18:42:39,791 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 36 states have internal predecessors, (66), 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 18:42:39,791 INFO L278 IsEmpty]: Start isEmpty. Operand 757 states and 2085 transitions. [2025-04-13 18:42:39,792 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:42:39,792 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:39,792 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:39,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-04-13 18:42:39,992 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-04-13 18:42:39,993 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:39,993 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash -574274594, now seen corresponding path program 6 times [2025-04-13 18:42:39,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:39,993 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523407844] [2025-04-13 18:42:39,993 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:42:39,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:39,999 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:42:40,006 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:42:40,006 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:42:40,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:40,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:40,582 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523407844] [2025-04-13 18:42:40,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523407844] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:40,582 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746067670] [2025-04-13 18:42:40,582 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:42:40,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:40,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:40,584 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:40,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-04-13 18:42:40,629 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:42:40,649 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:42:40,649 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:42:40,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:40,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-13 18:42:40,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:41,159 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:41,497 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:42:41,497 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-04-13 18:42:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:41,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746067670] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:41,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:41,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2025-04-13 18:42:41,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15386059] [2025-04-13 18:42:41,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:41,809 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:42:41,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:41,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:42:41,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2031, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:42:41,810 INFO L87 Difference]: Start difference. First operand 757 states and 2085 transitions. Second operand has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:42:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:47,194 INFO L93 Difference]: Finished difference Result 1295 states and 3321 transitions. [2025-04-13 18:42:47,194 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2025-04-13 18:42:47,194 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 26 [2025-04-13 18:42:47,194 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:47,199 INFO L225 Difference]: With dead ends: 1295 [2025-04-13 18:42:47,199 INFO L226 Difference]: Without dead ends: 1189 [2025-04-13 18:42:47,202 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3744 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1772, Invalid=14484, Unknown=0, NotChecked=0, Total=16256 [2025-04-13 18:42:47,202 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 540 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4081 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 4081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:47,202 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 0 Invalid, 4422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 4081 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 18:42:47,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2025-04-13 18:42:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 785. [2025-04-13 18:42:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 784 states have (on average 2.764030612244898) internal successors, (2167), 784 states have internal predecessors, (2167), 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 18:42:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 2167 transitions. [2025-04-13 18:42:47,268 INFO L79 Accepts]: Start accepts. Automaton has 785 states and 2167 transitions. Word has length 26 [2025-04-13 18:42:47,268 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:47,268 INFO L485 AbstractCegarLoop]: Abstraction has 785 states and 2167 transitions. [2025-04-13 18:42:47,268 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:42:47,268 INFO L278 IsEmpty]: Start isEmpty. Operand 785 states and 2167 transitions. [2025-04-13 18:42:47,269 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:42:47,269 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:47,269 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:47,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-04-13 18:42:47,472 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-04-13 18:42:47,472 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:47,472 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:47,472 INFO L85 PathProgramCache]: Analyzing trace with hash -97990456, now seen corresponding path program 7 times [2025-04-13 18:42:47,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:47,472 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835553873] [2025-04-13 18:42:47,472 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:42:47,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:47,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:42:47,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:42:47,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:47,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:48,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:48,084 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835553873] [2025-04-13 18:42:48,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835553873] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:48,084 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585065796] [2025-04-13 18:42:48,084 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:42:48,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:48,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:48,087 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:48,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-04-13 18:42:48,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:42:48,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:42:48,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:48,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:48,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 18:42:48,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:48,571 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:42:48,572 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2025-04-13 18:42:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:48,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:48,944 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:42:48,944 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-04-13 18:42:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:49,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585065796] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:49,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:49,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 18:42:49,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473337429] [2025-04-13 18:42:49,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:49,177 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 18:42:49,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:49,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 18:42:49,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1927, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:42:49,178 INFO L87 Difference]: Start difference. First operand 785 states and 2167 transitions. Second operand has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 46 states have internal predecessors, (74), 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 18:42:52,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:52,976 INFO L93 Difference]: Finished difference Result 1606 states and 4050 transitions. [2025-04-13 18:42:52,976 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2025-04-13 18:42:52,976 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 46 states have internal predecessors, (74), 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 26 [2025-04-13 18:42:52,977 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:52,982 INFO L225 Difference]: With dead ends: 1606 [2025-04-13 18:42:52,982 INFO L226 Difference]: Without dead ends: 1512 [2025-04-13 18:42:52,983 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3109 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1331, Invalid=10879, Unknown=0, NotChecked=0, Total=12210 [2025-04-13 18:42:52,983 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 313 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3411 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 3411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:52,983 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 0 Invalid, 3593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 3411 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-04-13 18:42:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2025-04-13 18:42:53,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 851. [2025-04-13 18:42:53,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 2.795294117647059) internal successors, (2376), 850 states have internal predecessors, (2376), 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 18:42:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 2376 transitions. [2025-04-13 18:42:53,072 INFO L79 Accepts]: Start accepts. Automaton has 851 states and 2376 transitions. Word has length 26 [2025-04-13 18:42:53,072 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:53,072 INFO L485 AbstractCegarLoop]: Abstraction has 851 states and 2376 transitions. [2025-04-13 18:42:53,072 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 46 states have internal predecessors, (74), 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 18:42:53,073 INFO L278 IsEmpty]: Start isEmpty. Operand 851 states and 2376 transitions. [2025-04-13 18:42:53,074 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:42:53,074 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:53,074 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:53,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-04-13 18:42:53,278 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:53,278 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:42:53,278 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:53,278 INFO L85 PathProgramCache]: Analyzing trace with hash -617465958, now seen corresponding path program 8 times [2025-04-13 18:42:53,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:53,278 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286820463] [2025-04-13 18:42:53,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:42:53,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:53,282 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:42:53,290 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:42:53,290 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:42:53,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:53,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:53,796 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286820463] [2025-04-13 18:42:53,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286820463] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:53,796 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693313548] [2025-04-13 18:42:53,796 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:42:53,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:53,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:53,798 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:42:53,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-04-13 18:42:53,836 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:42:53,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:42:53,856 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:42:53,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:53,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 18:42:53,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:54,319 INFO L325 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2025-04-13 18:42:54,319 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 39 [2025-04-13 18:42:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:54,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:54,847 INFO L325 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2025-04-13 18:42:54,848 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 53 [2025-04-13 18:42:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:55,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693313548] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:55,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:55,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2025-04-13 18:42:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114074651] [2025-04-13 18:42:55,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:55,192 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:42:55,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:55,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:42:55,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2012, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:42:55,193 INFO L87 Difference]: Start difference. First operand 851 states and 2376 transitions. Second operand has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:43:00,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:00,998 INFO L93 Difference]: Finished difference Result 1614 states and 4317 transitions. [2025-04-13 18:43:00,998 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-04-13 18:43:00,998 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 26 [2025-04-13 18:43:00,998 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:01,004 INFO L225 Difference]: With dead ends: 1614 [2025-04-13 18:43:01,004 INFO L226 Difference]: Without dead ends: 1575 [2025-04-13 18:43:01,005 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5113 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1957, Invalid=16403, Unknown=0, NotChecked=0, Total=18360 [2025-04-13 18:43:01,006 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 453 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3625 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 3625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:01,006 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 0 Invalid, 3941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 3625 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 18:43:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2025-04-13 18:43:01,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 881. [2025-04-13 18:43:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 2.8102272727272726) internal successors, (2473), 880 states have internal predecessors, (2473), 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 18:43:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 2473 transitions. [2025-04-13 18:43:01,101 INFO L79 Accepts]: Start accepts. Automaton has 881 states and 2473 transitions. Word has length 26 [2025-04-13 18:43:01,101 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:01,101 INFO L485 AbstractCegarLoop]: Abstraction has 881 states and 2473 transitions. [2025-04-13 18:43:01,101 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:43:01,101 INFO L278 IsEmpty]: Start isEmpty. Operand 881 states and 2473 transitions. [2025-04-13 18:43:01,103 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:43:01,103 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:01,103 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:43:01,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-04-13 18:43:01,303 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:01,303 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:43:01,303 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:43:01,304 INFO L85 PathProgramCache]: Analyzing trace with hash -919037462, now seen corresponding path program 9 times [2025-04-13 18:43:01,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:43:01,304 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075810736] [2025-04-13 18:43:01,304 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:43:01,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:43:01,308 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:43:01,315 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:01,315 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:43:01,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:43:01,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:43:01,515 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075810736] [2025-04-13 18:43:01,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075810736] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:43:01,515 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105210889] [2025-04-13 18:43:01,515 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:43:01,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:01,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:43:01,517 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:43:01,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-04-13 18:43:01,560 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:43:01,579 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:01,579 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:43:01,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:01,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-04-13 18:43:01,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:43:02,001 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 18:43:02,003 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:43:02,003 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 13 [2025-04-13 18:43:02,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:02,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:43:02,277 INFO L325 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2025-04-13 18:43:02,277 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 45 [2025-04-13 18:43:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:02,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105210889] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:43:02,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:43:02,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 15] total 40 [2025-04-13 18:43:02,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470807076] [2025-04-13 18:43:02,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:43:02,591 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-04-13 18:43:02,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:43:02,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-04-13 18:43:02,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1495, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:43:02,592 INFO L87 Difference]: Start difference. First operand 881 states and 2473 transitions. Second operand has 42 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 41 states have internal predecessors, (72), 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 18:43:05,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:05,520 INFO L93 Difference]: Finished difference Result 1480 states and 3862 transitions. [2025-04-13 18:43:05,520 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2025-04-13 18:43:05,520 INFO L79 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 41 states have internal predecessors, (72), 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 26 [2025-04-13 18:43:05,520 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:05,525 INFO L225 Difference]: With dead ends: 1480 [2025-04-13 18:43:05,525 INFO L226 Difference]: Without dead ends: 1293 [2025-04-13 18:43:05,526 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2620 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1248, Invalid=7872, Unknown=0, NotChecked=0, Total=9120 [2025-04-13 18:43:05,526 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 316 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:05,527 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 0 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 18:43:05,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2025-04-13 18:43:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 911. [2025-04-13 18:43:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 2.802197802197802) internal successors, (2550), 910 states have internal predecessors, (2550), 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 18:43:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 2550 transitions. [2025-04-13 18:43:05,621 INFO L79 Accepts]: Start accepts. Automaton has 911 states and 2550 transitions. Word has length 26 [2025-04-13 18:43:05,621 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:05,621 INFO L485 AbstractCegarLoop]: Abstraction has 911 states and 2550 transitions. [2025-04-13 18:43:05,621 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 41 states have internal predecessors, (72), 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 18:43:05,621 INFO L278 IsEmpty]: Start isEmpty. Operand 911 states and 2550 transitions. [2025-04-13 18:43:05,623 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:43:05,623 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:05,623 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:43:05,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-04-13 18:43:05,823 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:05,823 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:43:05,824 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:43:05,824 INFO L85 PathProgramCache]: Analyzing trace with hash -371590724, now seen corresponding path program 10 times [2025-04-13 18:43:05,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:43:05,824 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767191111] [2025-04-13 18:43:05,824 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:43:05,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:43:05,828 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:43:05,834 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:05,834 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:43:05,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:06,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:43:06,254 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767191111] [2025-04-13 18:43:06,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767191111] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:43:06,254 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525500759] [2025-04-13 18:43:06,254 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:43:06,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:06,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:43:06,256 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:43:06,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-04-13 18:43:06,297 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:43:06,311 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:06,311 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:43:06,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:06,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 18:43:06,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:43:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:06,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:43:07,023 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:43:07,023 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-04-13 18:43:07,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:07,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525500759] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:43:07,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:43:07,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 18:43:07,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356151788] [2025-04-13 18:43:07,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:43:07,269 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 18:43:07,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:43:07,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 18:43:07,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1893, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:43:07,270 INFO L87 Difference]: Start difference. First operand 911 states and 2550 transitions. Second operand has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 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 18:43:13,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:13,143 INFO L93 Difference]: Finished difference Result 1756 states and 4487 transitions. [2025-04-13 18:43:13,143 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2025-04-13 18:43:13,143 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 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 26 [2025-04-13 18:43:13,143 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:13,149 INFO L225 Difference]: With dead ends: 1756 [2025-04-13 18:43:13,149 INFO L226 Difference]: Without dead ends: 1522 [2025-04-13 18:43:13,150 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5340 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2368, Invalid=14662, Unknown=0, NotChecked=0, Total=17030 [2025-04-13 18:43:13,151 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 423 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4460 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 4460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:13,151 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 0 Invalid, 4729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 4460 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-04-13 18:43:13,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2025-04-13 18:43:13,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 963. [2025-04-13 18:43:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 2.814968814968815) internal successors, (2708), 962 states have internal predecessors, (2708), 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 18:43:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 2708 transitions. [2025-04-13 18:43:13,282 INFO L79 Accepts]: Start accepts. Automaton has 963 states and 2708 transitions. Word has length 26 [2025-04-13 18:43:13,282 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:13,282 INFO L485 AbstractCegarLoop]: Abstraction has 963 states and 2708 transitions. [2025-04-13 18:43:13,282 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 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 18:43:13,283 INFO L278 IsEmpty]: Start isEmpty. Operand 963 states and 2708 transitions. [2025-04-13 18:43:13,285 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:43:13,285 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:13,285 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:43:13,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-04-13 18:43:13,485 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-04-13 18:43:13,485 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:43:13,485 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:43:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash 104693414, now seen corresponding path program 11 times [2025-04-13 18:43:13,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:43:13,486 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34581258] [2025-04-13 18:43:13,486 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:43:13,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:43:13,490 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:43:13,496 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:13,496 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:43:13,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:14,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:43:14,138 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34581258] [2025-04-13 18:43:14,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34581258] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:43:14,138 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830922668] [2025-04-13 18:43:14,138 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:43:14,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:14,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:43:14,140 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:43:14,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-04-13 18:43:14,184 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:43:14,201 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:14,201 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:43:14,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:14,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 18:43:14,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:43:14,568 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:43:14,568 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2025-04-13 18:43:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:14,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:43:15,020 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:43:15,020 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 56 [2025-04-13 18:43:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:15,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830922668] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:43:15,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:43:15,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2025-04-13 18:43:15,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829507652] [2025-04-13 18:43:15,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:43:15,297 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:43:15,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:43:15,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:43:15,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1979, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:43:15,298 INFO L87 Difference]: Start difference. First operand 963 states and 2708 transitions. Second operand has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 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 18:43:29,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:29,594 INFO L93 Difference]: Finished difference Result 3258 states and 8590 transitions. [2025-04-13 18:43:29,594 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2025-04-13 18:43:29,594 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 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 26 [2025-04-13 18:43:29,594 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:29,604 INFO L225 Difference]: With dead ends: 3258 [2025-04-13 18:43:29,606 INFO L226 Difference]: Without dead ends: 3145 [2025-04-13 18:43:29,608 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10073 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=4268, Invalid=26532, Unknown=0, NotChecked=0, Total=30800 [2025-04-13 18:43:29,608 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 559 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5417 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 5417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:29,608 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 0 Invalid, 5778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 5417 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-04-13 18:43:29,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2025-04-13 18:43:29,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 1548. [2025-04-13 18:43:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1547 states have (on average 2.962508080155139) internal successors, (4583), 1547 states have internal predecessors, (4583), 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 18:43:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 4583 transitions. [2025-04-13 18:43:29,811 INFO L79 Accepts]: Start accepts. Automaton has 1548 states and 4583 transitions. Word has length 26 [2025-04-13 18:43:29,811 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:29,811 INFO L485 AbstractCegarLoop]: Abstraction has 1548 states and 4583 transitions. [2025-04-13 18:43:29,811 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 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 18:43:29,811 INFO L278 IsEmpty]: Start isEmpty. Operand 1548 states and 4583 transitions. [2025-04-13 18:43:29,815 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:43:29,815 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:29,815 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:43:29,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-04-13 18:43:30,015 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:30,015 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:43:30,016 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:43:30,016 INFO L85 PathProgramCache]: Analyzing trace with hash -414782088, now seen corresponding path program 12 times [2025-04-13 18:43:30,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:43:30,016 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200852405] [2025-04-13 18:43:30,016 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:43:30,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:43:30,021 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:43:30,030 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:30,031 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:43:30,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:30,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:43:30,541 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200852405] [2025-04-13 18:43:30,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200852405] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:43:30,541 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919175668] [2025-04-13 18:43:30,541 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:43:30,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:30,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:43:30,543 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:43:30,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-04-13 18:43:30,588 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:43:30,604 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:30,604 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:43:30,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:30,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 18:43:30,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:43:30,984 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:43:30,984 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2025-04-13 18:43:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:31,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:43:31,376 INFO L325 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2025-04-13 18:43:31,376 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 43 [2025-04-13 18:43:31,611 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:31,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919175668] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:43:31,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:43:31,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2025-04-13 18:43:31,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453232355] [2025-04-13 18:43:31,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:43:31,612 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:43:31,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:43:31,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:43:31,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1927, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:43:31,613 INFO L87 Difference]: Start difference. First operand 1548 states and 4583 transitions. Second operand has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:43:35,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:35,646 INFO L93 Difference]: Finished difference Result 2318 states and 6430 transitions. [2025-04-13 18:43:35,646 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2025-04-13 18:43:35,646 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 26 [2025-04-13 18:43:35,647 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:35,652 INFO L225 Difference]: With dead ends: 2318 [2025-04-13 18:43:35,652 INFO L226 Difference]: Without dead ends: 2259 [2025-04-13 18:43:35,653 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1707, Invalid=10725, Unknown=0, NotChecked=0, Total=12432 [2025-04-13 18:43:35,653 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 281 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3331 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 3331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:35,653 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 0 Invalid, 3541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 3331 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-04-13 18:43:35,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2025-04-13 18:43:35,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 1630. [2025-04-13 18:43:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 2.972375690607735) internal successors, (4842), 1629 states have internal predecessors, (4842), 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 18:43:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 4842 transitions. [2025-04-13 18:43:35,871 INFO L79 Accepts]: Start accepts. Automaton has 1630 states and 4842 transitions. Word has length 26 [2025-04-13 18:43:35,871 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:35,871 INFO L485 AbstractCegarLoop]: Abstraction has 1630 states and 4842 transitions. [2025-04-13 18:43:35,871 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:43:35,871 INFO L278 IsEmpty]: Start isEmpty. Operand 1630 states and 4842 transitions. [2025-04-13 18:43:35,873 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:43:35,873 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:35,873 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:43:35,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-04-13 18:43:36,073 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:36,074 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:43:36,074 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:43:36,074 INFO L85 PathProgramCache]: Analyzing trace with hash 571945974, now seen corresponding path program 13 times [2025-04-13 18:43:36,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:43:36,074 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739683626] [2025-04-13 18:43:36,074 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:43:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:43:36,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:43:36,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:36,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:43:36,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:36,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:43:36,620 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739683626] [2025-04-13 18:43:36,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739683626] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:43:36,620 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413174059] [2025-04-13 18:43:36,620 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:43:36,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:36,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:43:36,621 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:43:36,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-04-13 18:43:36,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:43:36,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:36,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:43:36,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:36,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 18:43:36,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:43:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:37,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:43:37,434 INFO L325 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2025-04-13 18:43:37,434 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 43 [2025-04-13 18:43:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:37,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413174059] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:43:37,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:43:37,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 18:43:37,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853023618] [2025-04-13 18:43:37,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:43:37,664 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 18:43:37,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:43:37,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 18:43:37,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1868, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:43:37,665 INFO L87 Difference]: Start difference. First operand 1630 states and 4842 transitions. Second operand has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 46 states have internal predecessors, (74), 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 18:43:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:42,044 INFO L93 Difference]: Finished difference Result 1945 states and 5546 transitions. [2025-04-13 18:43:42,044 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2025-04-13 18:43:42,044 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 46 states have internal predecessors, (74), 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 26 [2025-04-13 18:43:42,044 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:42,053 INFO L225 Difference]: With dead ends: 1945 [2025-04-13 18:43:42,055 INFO L226 Difference]: Without dead ends: 1860 [2025-04-13 18:43:42,057 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3362 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1707, Invalid=11403, Unknown=0, NotChecked=0, Total=13110 [2025-04-13 18:43:42,057 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 304 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2728 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:42,057 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 0 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2728 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 18:43:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2025-04-13 18:43:42,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1644. [2025-04-13 18:43:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1643 states have (on average 2.9671332927571514) internal successors, (4875), 1643 states have internal predecessors, (4875), 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 18:43:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 4875 transitions. [2025-04-13 18:43:42,287 INFO L79 Accepts]: Start accepts. Automaton has 1644 states and 4875 transitions. Word has length 26 [2025-04-13 18:43:42,287 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:42,287 INFO L485 AbstractCegarLoop]: Abstraction has 1644 states and 4875 transitions. [2025-04-13 18:43:42,288 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 46 states have internal predecessors, (74), 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 18:43:42,288 INFO L278 IsEmpty]: Start isEmpty. Operand 1644 states and 4875 transitions. [2025-04-13 18:43:42,290 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:43:42,290 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:42,290 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:43:42,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-04-13 18:43:42,490 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:42,491 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:43:42,491 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:43:42,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1035529202, now seen corresponding path program 14 times [2025-04-13 18:43:42,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:43:42,491 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126906472] [2025-04-13 18:43:42,491 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:43:42,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:43:42,495 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:43:42,514 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:42,514 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:43:42,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:42,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:43:42,924 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126906472] [2025-04-13 18:43:42,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126906472] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:43:42,924 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544659078] [2025-04-13 18:43:42,924 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:43:42,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:42,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:43:42,926 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:43:42,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-04-13 18:43:42,968 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:43:42,983 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:42,983 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:43:42,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:42,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:43:42,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:43:43,290 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:43:43,291 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 7 [2025-04-13 18:43:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:43,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:43:43,791 INFO L325 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2025-04-13 18:43:43,791 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 43 [2025-04-13 18:43:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:44,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544659078] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:43:44,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:43:44,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2025-04-13 18:43:44,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202522405] [2025-04-13 18:43:44,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:43:44,059 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:43:44,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:43:44,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:43:44,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1945, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:43:44,059 INFO L87 Difference]: Start difference. First operand 1644 states and 4875 transitions. Second operand has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:43:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:50,223 INFO L93 Difference]: Finished difference Result 2311 states and 6412 transitions. [2025-04-13 18:43:50,224 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2025-04-13 18:43:50,224 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 26 [2025-04-13 18:43:50,224 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:50,229 INFO L225 Difference]: With dead ends: 2311 [2025-04-13 18:43:50,229 INFO L226 Difference]: Without dead ends: 2248 [2025-04-13 18:43:50,230 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4719 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2132, Invalid=15690, Unknown=0, NotChecked=0, Total=17822 [2025-04-13 18:43:50,230 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 285 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3089 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 3089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:50,230 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 0 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 3089 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-04-13 18:43:50,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2025-04-13 18:43:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1704. [2025-04-13 18:43:50,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 2.9624192601291837) internal successors, (5045), 1703 states have internal predecessors, (5045), 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 18:43:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 5045 transitions. [2025-04-13 18:43:50,507 INFO L79 Accepts]: Start accepts. Automaton has 1704 states and 5045 transitions. Word has length 26 [2025-04-13 18:43:50,507 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:50,507 INFO L485 AbstractCegarLoop]: Abstraction has 1704 states and 5045 transitions. [2025-04-13 18:43:50,507 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:43:50,507 INFO L278 IsEmpty]: Start isEmpty. Operand 1704 states and 5045 transitions. [2025-04-13 18:43:50,509 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:43:50,509 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:50,509 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:43:50,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-04-13 18:43:50,709 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-04-13 18:43:50,710 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:43:50,710 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:43:50,710 INFO L85 PathProgramCache]: Analyzing trace with hash 528754610, now seen corresponding path program 15 times [2025-04-13 18:43:50,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:43:50,710 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28610261] [2025-04-13 18:43:50,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:43:50,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:43:50,714 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:43:50,719 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 26 statements. [2025-04-13 18:43:50,719 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:43:50,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:43:50,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:43:50,923 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28610261] [2025-04-13 18:43:50,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28610261] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:43:50,923 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943859971] [2025-04-13 18:43:50,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:43:50,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:50,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:43:50,925 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:43:50,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-04-13 18:43:50,967 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:43:50,991 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 26 statements. [2025-04-13 18:43:50,991 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:43:50,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:50,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 18:43:50,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:43:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:43:51,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:43:51,352 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:43:51,353 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 56 [2025-04-13 18:43:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:43:51,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943859971] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:43:51,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:43:51,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 29 [2025-04-13 18:43:51,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044926400] [2025-04-13 18:43:51,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:43:51,393 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 18:43:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:43:51,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 18:43:51,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:43:51,394 INFO L87 Difference]: Start difference. First operand 1704 states and 5045 transitions. Second operand has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 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 18:43:52,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:52,865 INFO L93 Difference]: Finished difference Result 1963 states and 5630 transitions. [2025-04-13 18:43:52,865 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 18:43:52,865 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 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 26 [2025-04-13 18:43:52,865 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:52,870 INFO L225 Difference]: With dead ends: 1963 [2025-04-13 18:43:52,870 INFO L226 Difference]: Without dead ends: 1926 [2025-04-13 18:43:52,871 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=359, Invalid=2947, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 18:43:52,871 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 167 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:52,871 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 0 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:43:52,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2025-04-13 18:43:53,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1724. [2025-04-13 18:43:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 2.95937318630296) internal successors, (5099), 1723 states have internal predecessors, (5099), 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 18:43:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 5099 transitions. [2025-04-13 18:43:53,114 INFO L79 Accepts]: Start accepts. Automaton has 1724 states and 5099 transitions. Word has length 26 [2025-04-13 18:43:53,114 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:53,114 INFO L485 AbstractCegarLoop]: Abstraction has 1724 states and 5099 transitions. [2025-04-13 18:43:53,114 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 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 18:43:53,114 INFO L278 IsEmpty]: Start isEmpty. Operand 1724 states and 5099 transitions. [2025-04-13 18:43:53,116 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:43:53,116 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:53,116 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:43:53,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-04-13 18:43:53,317 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-04-13 18:43:53,317 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:43:53,317 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:43:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1050691106, now seen corresponding path program 16 times [2025-04-13 18:43:53,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:43:53,317 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429805076] [2025-04-13 18:43:53,318 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:43:53,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:43:53,323 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:43:53,329 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:53,329 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:43:53,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:53,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:43:53,675 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429805076] [2025-04-13 18:43:53,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429805076] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:43:53,675 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713880515] [2025-04-13 18:43:53,675 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:43:53,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:53,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:43:53,677 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:43:53,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-04-13 18:43:53,719 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:43:53,732 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:43:53,732 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:43:53,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:53,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 18:43:53,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:43:54,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:54,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:43:54,387 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:43:54,387 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-04-13 18:43:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:54,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713880515] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:43:54,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:43:54,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 18:43:54,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596611827] [2025-04-13 18:43:54,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:43:54,582 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 18:43:54,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:43:54,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 18:43:54,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1898, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:43:54,583 INFO L87 Difference]: Start difference. First operand 1724 states and 5099 transitions. Second operand has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 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 18:43:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:59,581 INFO L93 Difference]: Finished difference Result 3326 states and 9364 transitions. [2025-04-13 18:43:59,581 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2025-04-13 18:43:59,581 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 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 26 [2025-04-13 18:43:59,581 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:59,588 INFO L225 Difference]: With dead ends: 3326 [2025-04-13 18:43:59,588 INFO L226 Difference]: Without dead ends: 2718 [2025-04-13 18:43:59,589 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5683 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2955, Invalid=14601, Unknown=0, NotChecked=0, Total=17556 [2025-04-13 18:43:59,590 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 587 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3847 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 3847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:59,590 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 0 Invalid, 4290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 3847 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 18:43:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2718 states. [2025-04-13 18:43:59,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2718 to 1896. [2025-04-13 18:43:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 2.96622691292876) internal successors, (5621), 1895 states have internal predecessors, (5621), 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 18:43:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 5621 transitions. [2025-04-13 18:43:59,869 INFO L79 Accepts]: Start accepts. Automaton has 1896 states and 5621 transitions. Word has length 26 [2025-04-13 18:43:59,869 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:59,869 INFO L485 AbstractCegarLoop]: Abstraction has 1896 states and 5621 transitions. [2025-04-13 18:43:59,869 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 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 18:43:59,869 INFO L278 IsEmpty]: Start isEmpty. Operand 1896 states and 5621 transitions. [2025-04-13 18:43:59,871 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:43:59,871 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:59,872 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:43:59,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-04-13 18:44:00,072 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-04-13 18:44:00,072 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:44:00,072 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:00,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1655048264, now seen corresponding path program 17 times [2025-04-13 18:44:00,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:00,073 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52166237] [2025-04-13 18:44:00,073 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:44:00,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:00,077 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:44:00,084 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:00,085 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:44:00,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:00,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:00,511 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52166237] [2025-04-13 18:44:00,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52166237] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:00,511 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487269681] [2025-04-13 18:44:00,512 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:44:00,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:00,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:00,513 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:44:00,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-04-13 18:44:00,559 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:44:00,576 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:00,576 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:44:00,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:00,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-04-13 18:44:00,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:01,136 INFO L325 Elim1Store]: treesize reduction 38, result has 15.6 percent of original size [2025-04-13 18:44:01,136 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 19 [2025-04-13 18:44:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:01,183 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:01,454 INFO L325 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2025-04-13 18:44:01,454 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 45 [2025-04-13 18:44:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:01,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487269681] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:01,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:01,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 18:44:01,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342420506] [2025-04-13 18:44:01,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:01,793 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 18:44:01,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:01,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 18:44:01,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1916, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:44:01,794 INFO L87 Difference]: Start difference. First operand 1896 states and 5621 transitions. Second operand has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 46 states have internal predecessors, (74), 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 18:44:06,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:44:06,701 INFO L93 Difference]: Finished difference Result 2581 states and 7268 transitions. [2025-04-13 18:44:06,701 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-04-13 18:44:06,701 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 46 states have internal predecessors, (74), 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 26 [2025-04-13 18:44:06,701 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:44:06,707 INFO L225 Difference]: With dead ends: 2581 [2025-04-13 18:44:06,707 INFO L226 Difference]: Without dead ends: 2513 [2025-04-13 18:44:06,708 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3567 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1498, Invalid=11612, Unknown=0, NotChecked=0, Total=13110 [2025-04-13 18:44:06,708 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 287 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:44:06,708 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 0 Invalid, 3256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 3065 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-04-13 18:44:06,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2025-04-13 18:44:06,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 1968. [2025-04-13 18:44:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1967 states have (on average 2.972547025927809) internal successors, (5847), 1967 states have internal predecessors, (5847), 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 18:44:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 5847 transitions. [2025-04-13 18:44:07,000 INFO L79 Accepts]: Start accepts. Automaton has 1968 states and 5847 transitions. Word has length 26 [2025-04-13 18:44:07,001 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:07,001 INFO L485 AbstractCegarLoop]: Abstraction has 1968 states and 5847 transitions. [2025-04-13 18:44:07,001 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 46 states have internal predecessors, (74), 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 18:44:07,001 INFO L278 IsEmpty]: Start isEmpty. Operand 1968 states and 5847 transitions. [2025-04-13 18:44:07,003 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:44:07,003 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:07,003 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:44:07,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-04-13 18:44:07,203 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:07,204 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:44:07,204 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:07,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1714199048, now seen corresponding path program 18 times [2025-04-13 18:44:07,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:07,204 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127128050] [2025-04-13 18:44:07,204 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:44:07,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:07,208 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:44:07,214 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:07,214 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:44:07,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:07,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:07,620 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127128050] [2025-04-13 18:44:07,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127128050] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:07,620 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778376627] [2025-04-13 18:44:07,620 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:44:07,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:07,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:07,622 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:44:07,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-04-13 18:44:07,665 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:44:07,680 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:07,680 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:44:07,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:07,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-04-13 18:44:07,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:08,143 INFO L325 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2025-04-13 18:44:08,143 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 39 [2025-04-13 18:44:08,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:08,301 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:08,602 INFO L325 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2025-04-13 18:44:08,602 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 45 [2025-04-13 18:44:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:08,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778376627] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:08,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:08,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2025-04-13 18:44:08,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273988559] [2025-04-13 18:44:08,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:08,951 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:44:08,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:08,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:44:08,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2004, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:44:08,952 INFO L87 Difference]: Start difference. First operand 1968 states and 5847 transitions. Second operand has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:44:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:44:18,771 INFO L93 Difference]: Finished difference Result 2939 states and 8019 transitions. [2025-04-13 18:44:18,771 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2025-04-13 18:44:18,771 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 26 [2025-04-13 18:44:18,771 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:44:18,776 INFO L225 Difference]: With dead ends: 2939 [2025-04-13 18:44:18,777 INFO L226 Difference]: Without dead ends: 2839 [2025-04-13 18:44:18,778 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8485 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3441, Invalid=23949, Unknown=0, NotChecked=0, Total=27390 [2025-04-13 18:44:18,778 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 731 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3679 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 3679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:44:18,779 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 0 Invalid, 4166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 3679 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-04-13 18:44:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2025-04-13 18:44:19,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2038. [2025-04-13 18:44:19,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2038 states, 2037 states have (on average 2.9690721649484537) internal successors, (6048), 2037 states have internal predecessors, (6048), 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 18:44:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 6048 transitions. [2025-04-13 18:44:19,091 INFO L79 Accepts]: Start accepts. Automaton has 2038 states and 6048 transitions. Word has length 26 [2025-04-13 18:44:19,091 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:19,091 INFO L485 AbstractCegarLoop]: Abstraction has 2038 states and 6048 transitions. [2025-04-13 18:44:19,091 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:44:19,091 INFO L278 IsEmpty]: Start isEmpty. Operand 2038 states and 6048 transitions. [2025-04-13 18:44:19,093 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:44:19,093 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:19,094 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:44:19,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-04-13 18:44:19,294 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:19,294 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:44:19,294 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:19,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1641534328, now seen corresponding path program 19 times [2025-04-13 18:44:19,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:19,295 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281763223] [2025-04-13 18:44:19,295 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:44:19,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:19,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:44:19,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:19,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:44:19,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:19,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:19,771 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281763223] [2025-04-13 18:44:19,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281763223] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:19,771 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859669127] [2025-04-13 18:44:19,771 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:44:19,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:19,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:19,773 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:44:19,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-04-13 18:44:19,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:44:19,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:19,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:44:19,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:19,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 18:44:19,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:20,217 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:44:20,217 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2025-04-13 18:44:20,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:20,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:20,597 INFO L325 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2025-04-13 18:44:20,597 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 43 [2025-04-13 18:44:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:20,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859669127] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:20,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:20,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2025-04-13 18:44:20,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61838195] [2025-04-13 18:44:20,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:20,818 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:44:20,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:20,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:44:20,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1946, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:44:20,819 INFO L87 Difference]: Start difference. First operand 2038 states and 6048 transitions. Second operand has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 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 18:44:25,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:44:25,021 INFO L93 Difference]: Finished difference Result 2586 states and 7226 transitions. [2025-04-13 18:44:25,021 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-04-13 18:44:25,021 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 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 26 [2025-04-13 18:44:25,021 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:44:25,027 INFO L225 Difference]: With dead ends: 2586 [2025-04-13 18:44:25,027 INFO L226 Difference]: Without dead ends: 2521 [2025-04-13 18:44:25,028 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2966 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1477, Invalid=10079, Unknown=0, NotChecked=0, Total=11556 [2025-04-13 18:44:25,028 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 228 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:44:25,028 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 0 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 18:44:25,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2025-04-13 18:44:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2054. [2025-04-13 18:44:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2053 states have (on average 2.9644422795908425) internal successors, (6086), 2053 states have internal predecessors, (6086), 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 18:44:25,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 6086 transitions. [2025-04-13 18:44:25,347 INFO L79 Accepts]: Start accepts. Automaton has 2054 states and 6086 transitions. Word has length 26 [2025-04-13 18:44:25,347 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:25,347 INFO L485 AbstractCegarLoop]: Abstraction has 2054 states and 6086 transitions. [2025-04-13 18:44:25,347 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 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 18:44:25,348 INFO L278 IsEmpty]: Start isEmpty. Operand 2054 states and 6086 transitions. [2025-04-13 18:44:25,350 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:44:25,350 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:25,350 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:44:25,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-04-13 18:44:25,550 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-04-13 18:44:25,550 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:44:25,551 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:25,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2074421982, now seen corresponding path program 20 times [2025-04-13 18:44:25,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:25,551 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064829485] [2025-04-13 18:44:25,551 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:44:25,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:25,555 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:44:25,560 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:25,560 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:44:25,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:26,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:26,022 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064829485] [2025-04-13 18:44:26,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064829485] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:26,023 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498548844] [2025-04-13 18:44:26,023 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:44:26,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:26,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:26,024 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:44:26,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-04-13 18:44:26,069 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:44:26,084 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:26,084 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:44:26,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:26,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-04-13 18:44:26,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:26,392 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:44:26,392 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 7 [2025-04-13 18:44:26,491 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:26,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:26,822 INFO L325 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2025-04-13 18:44:26,822 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 46 [2025-04-13 18:44:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:27,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498548844] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:27,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:27,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2025-04-13 18:44:27,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138965521] [2025-04-13 18:44:27,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:27,103 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:44:27,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:27,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:44:27,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1966, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:44:27,104 INFO L87 Difference]: Start difference. First operand 2054 states and 6086 transitions. Second operand has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:44:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:44:32,992 INFO L93 Difference]: Finished difference Result 2858 states and 7982 transitions. [2025-04-13 18:44:32,992 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2025-04-13 18:44:32,992 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 26 [2025-04-13 18:44:32,992 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:44:32,997 INFO L225 Difference]: With dead ends: 2858 [2025-04-13 18:44:32,997 INFO L226 Difference]: Without dead ends: 2762 [2025-04-13 18:44:32,998 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5221 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2814, Invalid=15546, Unknown=0, NotChecked=0, Total=18360 [2025-04-13 18:44:32,999 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 425 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3043 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 3043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:44:32,999 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 0 Invalid, 3344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 3043 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-04-13 18:44:33,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2025-04-13 18:44:33,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2148. [2025-04-13 18:44:33,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 2147 states have (on average 2.960875640428505) internal successors, (6357), 2147 states have internal predecessors, (6357), 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 18:44:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 6357 transitions. [2025-04-13 18:44:33,353 INFO L79 Accepts]: Start accepts. Automaton has 2148 states and 6357 transitions. Word has length 26 [2025-04-13 18:44:33,353 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:33,353 INFO L485 AbstractCegarLoop]: Abstraction has 2148 states and 6357 transitions. [2025-04-13 18:44:33,353 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:44:33,353 INFO L278 IsEmpty]: Start isEmpty. Operand 2148 states and 6357 transitions. [2025-04-13 18:44:33,356 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:44:33,356 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:33,356 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:44:33,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-04-13 18:44:33,556 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-04-13 18:44:33,557 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:44:33,557 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:33,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1611856900, now seen corresponding path program 21 times [2025-04-13 18:44:33,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:33,557 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119219167] [2025-04-13 18:44:33,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:44:33,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:33,561 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:44:33,567 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:33,567 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:44:33,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:33,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:33,954 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119219167] [2025-04-13 18:44:33,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119219167] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:33,954 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280030342] [2025-04-13 18:44:33,954 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:44:33,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:33,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:33,956 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:44:33,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-04-13 18:44:34,002 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:44:34,034 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:34,034 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:44:34,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:34,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-04-13 18:44:34,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:34,323 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:44:34,324 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 7 [2025-04-13 18:44:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:34,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:34,760 INFO L325 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2025-04-13 18:44:34,761 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 43 [2025-04-13 18:44:34,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:34,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280030342] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:34,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:34,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 48 [2025-04-13 18:44:34,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299206139] [2025-04-13 18:44:34,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:34,998 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-04-13 18:44:34,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:34,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-04-13 18:44:34,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2105, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 18:44:34,998 INFO L87 Difference]: Start difference. First operand 2148 states and 6357 transitions. Second operand has 50 states, 49 states have (on average 1.510204081632653) internal successors, (74), 49 states have internal predecessors, (74), 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 18:44:38,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:44:38,166 INFO L93 Difference]: Finished difference Result 2522 states and 7179 transitions. [2025-04-13 18:44:38,166 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-04-13 18:44:38,166 INFO L79 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.510204081632653) internal successors, (74), 49 states have internal predecessors, (74), 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 26 [2025-04-13 18:44:38,166 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:44:38,171 INFO L225 Difference]: With dead ends: 2522 [2025-04-13 18:44:38,171 INFO L226 Difference]: Without dead ends: 2474 [2025-04-13 18:44:38,172 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1967 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1089, Invalid=7467, Unknown=0, NotChecked=0, Total=8556 [2025-04-13 18:44:38,172 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 183 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:44:38,172 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 0 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 18:44:38,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2025-04-13 18:44:38,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2166. [2025-04-13 18:44:38,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 2165 states have (on average 2.961662817551963) internal successors, (6412), 2165 states have internal predecessors, (6412), 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 18:44:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 6412 transitions. [2025-04-13 18:44:38,531 INFO L79 Accepts]: Start accepts. Automaton has 2166 states and 6412 transitions. Word has length 26 [2025-04-13 18:44:38,531 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:38,531 INFO L485 AbstractCegarLoop]: Abstraction has 2166 states and 6412 transitions. [2025-04-13 18:44:38,531 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.510204081632653) internal successors, (74), 49 states have internal predecessors, (74), 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 18:44:38,531 INFO L278 IsEmpty]: Start isEmpty. Operand 2166 states and 6412 transitions. [2025-04-13 18:44:38,534 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:44:38,534 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:38,534 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:44:38,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-04-13 18:44:38,734 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:38,734 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:44:38,735 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:38,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1753292754, now seen corresponding path program 22 times [2025-04-13 18:44:38,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:38,735 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273064467] [2025-04-13 18:44:38,735 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:44:38,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:38,739 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:44:38,744 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:38,744 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:44:38,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:39,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:39,055 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273064467] [2025-04-13 18:44:39,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273064467] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:39,055 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955609066] [2025-04-13 18:44:39,055 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:44:39,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:39,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:39,057 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:44:39,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-04-13 18:44:39,102 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:44:39,116 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:39,116 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:44:39,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:39,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 18:44:39,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:39,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:39,759 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:44:39,759 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-04-13 18:44:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:39,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955609066] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:39,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:39,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 18:44:39,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709766253] [2025-04-13 18:44:39,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:39,948 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 18:44:39,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:39,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 18:44:39,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1888, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:44:39,949 INFO L87 Difference]: Start difference. First operand 2166 states and 6412 transitions. Second operand has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 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 18:44:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:44:43,043 INFO L93 Difference]: Finished difference Result 2500 states and 7155 transitions. [2025-04-13 18:44:43,043 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2025-04-13 18:44:43,044 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 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 26 [2025-04-13 18:44:43,044 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:44:43,048 INFO L225 Difference]: With dead ends: 2500 [2025-04-13 18:44:43,048 INFO L226 Difference]: Without dead ends: 2415 [2025-04-13 18:44:43,049 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2857 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1186, Invalid=8516, Unknown=0, NotChecked=0, Total=9702 [2025-04-13 18:44:43,049 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 234 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:44:43,049 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 0 Invalid, 2420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:44:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2025-04-13 18:44:43,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2178. [2025-04-13 18:44:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 2.9581993569131835) internal successors, (6440), 2177 states have internal predecessors, (6440), 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 18:44:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 6440 transitions. [2025-04-13 18:44:43,414 INFO L79 Accepts]: Start accepts. Automaton has 2178 states and 6440 transitions. Word has length 26 [2025-04-13 18:44:43,414 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:43,414 INFO L485 AbstractCegarLoop]: Abstraction has 2178 states and 6440 transitions. [2025-04-13 18:44:43,414 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 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 18:44:43,414 INFO L278 IsEmpty]: Start isEmpty. Operand 2178 states and 6440 transitions. [2025-04-13 18:44:43,417 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:44:43,417 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:43,417 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:44:43,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-04-13 18:44:43,617 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:43,618 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:44:43,618 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:43,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1297196044, now seen corresponding path program 23 times [2025-04-13 18:44:43,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:43,618 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324460937] [2025-04-13 18:44:43,618 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:44:43,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:43,622 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:44:43,627 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:43,628 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:44:43,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:43,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:43,998 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324460937] [2025-04-13 18:44:43,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324460937] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:43,998 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797096315] [2025-04-13 18:44:43,998 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:44:44,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:44,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:44,002 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:44:44,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-04-13 18:44:44,053 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:44:44,068 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:44,068 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:44:44,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:44,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 18:44:44,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:44,543 INFO L325 Elim1Store]: treesize reduction 38, result has 15.6 percent of original size [2025-04-13 18:44:44,543 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 19 [2025-04-13 18:44:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:44,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:44,855 INFO L325 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2025-04-13 18:44:44,855 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 45 [2025-04-13 18:44:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:45,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797096315] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:45,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:45,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 18:44:45,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430185592] [2025-04-13 18:44:45,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:45,190 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 18:44:45,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:45,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 18:44:45,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1912, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:44:45,190 INFO L87 Difference]: Start difference. First operand 2178 states and 6440 transitions. Second operand has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 46 states have internal predecessors, (74), 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 18:44:52,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:44:52,197 INFO L93 Difference]: Finished difference Result 3263 states and 9073 transitions. [2025-04-13 18:44:52,197 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2025-04-13 18:44:52,197 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 46 states have internal predecessors, (74), 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 26 [2025-04-13 18:44:52,197 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:44:52,203 INFO L225 Difference]: With dead ends: 3263 [2025-04-13 18:44:52,203 INFO L226 Difference]: Without dead ends: 3190 [2025-04-13 18:44:52,204 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6690 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2853, Invalid=18903, Unknown=0, NotChecked=0, Total=21756 [2025-04-13 18:44:52,204 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 413 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3285 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 3285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:44:52,204 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 0 Invalid, 3509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 3285 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-04-13 18:44:52,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2025-04-13 18:44:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 2324. [2025-04-13 18:44:52,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 2323 states have (on average 2.9535083943176925) internal successors, (6861), 2323 states have internal predecessors, (6861), 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 18:44:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 6861 transitions. [2025-04-13 18:44:52,613 INFO L79 Accepts]: Start accepts. Automaton has 2324 states and 6861 transitions. Word has length 26 [2025-04-13 18:44:52,613 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:52,613 INFO L485 AbstractCegarLoop]: Abstraction has 2324 states and 6861 transitions. [2025-04-13 18:44:52,613 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 46 states have internal predecessors, (74), 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 18:44:52,614 INFO L278 IsEmpty]: Start isEmpty. Operand 2324 states and 6861 transitions. [2025-04-13 18:44:52,616 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:44:52,617 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:52,617 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:44:52,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-04-13 18:44:52,817 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:52,817 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:44:52,817 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:52,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2072051268, now seen corresponding path program 24 times [2025-04-13 18:44:52,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:52,818 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79659014] [2025-04-13 18:44:52,818 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:44:52,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:52,823 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:44:52,828 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:52,828 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:44:52,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:53,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:53,207 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79659014] [2025-04-13 18:44:53,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79659014] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:53,207 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484963860] [2025-04-13 18:44:53,207 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:44:53,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:53,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:53,209 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:44:53,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-04-13 18:44:53,256 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:44:53,270 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:53,270 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:44:53,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:53,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 18:44:53,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:53,606 INFO L325 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2025-04-13 18:44:53,606 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 18 [2025-04-13 18:44:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:53,719 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:54,060 INFO L325 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2025-04-13 18:44:54,060 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 43 [2025-04-13 18:44:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:54,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484963860] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:54,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:54,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2025-04-13 18:44:54,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157728488] [2025-04-13 18:44:54,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:54,374 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:44:54,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:54,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:44:54,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2009, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:44:54,375 INFO L87 Difference]: Start difference. First operand 2324 states and 6861 transitions. Second operand has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:44:57,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:44:57,165 INFO L93 Difference]: Finished difference Result 5178 states and 15077 transitions. [2025-04-13 18:44:57,166 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 18:44:57,166 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 26 [2025-04-13 18:44:57,166 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:44:57,173 INFO L225 Difference]: With dead ends: 5178 [2025-04-13 18:44:57,174 INFO L226 Difference]: Without dead ends: 4130 [2025-04-13 18:44:57,175 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=855, Invalid=4401, Unknown=0, NotChecked=0, Total=5256 [2025-04-13 18:44:57,176 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 414 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:44:57,176 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 0 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:44:57,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2025-04-13 18:44:57,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 3032. [2025-04-13 18:44:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 3031 states have (on average 2.9214780600461894) internal successors, (8855), 3031 states have internal predecessors, (8855), 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 18:44:57,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 8855 transitions. [2025-04-13 18:44:57,715 INFO L79 Accepts]: Start accepts. Automaton has 3032 states and 8855 transitions. Word has length 26 [2025-04-13 18:44:57,715 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:57,715 INFO L485 AbstractCegarLoop]: Abstraction has 3032 states and 8855 transitions. [2025-04-13 18:44:57,715 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:44:57,716 INFO L278 IsEmpty]: Start isEmpty. Operand 3032 states and 8855 transitions. [2025-04-13 18:44:57,719 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:44:57,719 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:57,719 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:44:57,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-04-13 18:44:57,919 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-04-13 18:44:57,919 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:44:57,920 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:57,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1999386548, now seen corresponding path program 25 times [2025-04-13 18:44:57,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:57,920 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015330284] [2025-04-13 18:44:57,920 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:44:57,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:57,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:44:57,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:57,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:44:57,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:58,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:58,354 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015330284] [2025-04-13 18:44:58,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015330284] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:58,354 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967797888] [2025-04-13 18:44:58,354 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:44:58,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:58,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:58,356 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:44:58,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-04-13 18:44:58,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 18:44:58,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:44:58,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:44:58,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:58,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 18:44:58,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:58,786 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:44:58,786 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2025-04-13 18:44:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:58,862 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:59,133 INFO L325 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2025-04-13 18:44:59,133 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 43 [2025-04-13 18:44:59,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:59,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967797888] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:59,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:59,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2025-04-13 18:44:59,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247989814] [2025-04-13 18:44:59,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:59,356 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:44:59,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:59,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:44:59,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1949, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:44:59,357 INFO L87 Difference]: Start difference. First operand 3032 states and 8855 transitions. Second operand has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 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 18:45:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:04,299 INFO L93 Difference]: Finished difference Result 4219 states and 11682 transitions. [2025-04-13 18:45:04,299 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2025-04-13 18:45:04,300 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 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 26 [2025-04-13 18:45:04,300 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:04,307 INFO L225 Difference]: With dead ends: 4219 [2025-04-13 18:45:04,307 INFO L226 Difference]: Without dead ends: 3496 [2025-04-13 18:45:04,308 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3468 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1722, Invalid=11160, Unknown=0, NotChecked=0, Total=12882 [2025-04-13 18:45:04,309 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 404 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:04,309 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 0 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-04-13 18:45:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2025-04-13 18:45:04,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 2958. [2025-04-13 18:45:04,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2957 states have (on average 2.91511667230301) internal successors, (8620), 2957 states have internal predecessors, (8620), 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 18:45:04,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 8620 transitions. [2025-04-13 18:45:04,851 INFO L79 Accepts]: Start accepts. Automaton has 2958 states and 8620 transitions. Word has length 26 [2025-04-13 18:45:04,851 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:04,851 INFO L485 AbstractCegarLoop]: Abstraction has 2958 states and 8620 transitions. [2025-04-13 18:45:04,851 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 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 18:45:04,852 INFO L278 IsEmpty]: Start isEmpty. Operand 2958 states and 8620 transitions. [2025-04-13 18:45:04,854 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:45:04,854 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:04,855 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:04,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-04-13 18:45:05,055 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-04-13 18:45:05,055 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:05,055 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:05,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1716569762, now seen corresponding path program 26 times [2025-04-13 18:45:05,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:05,056 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548988467] [2025-04-13 18:45:05,056 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:45:05,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:05,060 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:45:05,064 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:45:05,064 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:45:05,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:05,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:05,474 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548988467] [2025-04-13 18:45:05,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548988467] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:05,474 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501576601] [2025-04-13 18:45:05,474 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:45:05,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:05,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:05,476 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:05,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-04-13 18:45:05,526 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:45:05,541 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:45:05,541 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:45:05,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:05,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 18:45:05,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:05,848 INFO L325 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2025-04-13 18:45:05,848 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 18 [2025-04-13 18:45:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:06,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:06,323 INFO L325 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2025-04-13 18:45:06,323 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 45 [2025-04-13 18:45:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:06,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501576601] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:06,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:06,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 46 [2025-04-13 18:45:06,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509828926] [2025-04-13 18:45:06,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:06,692 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-04-13 18:45:06,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:06,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-04-13 18:45:06,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1994, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:45:06,693 INFO L87 Difference]: Start difference. First operand 2958 states and 8620 transitions. Second operand has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:45:13,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:13,151 INFO L93 Difference]: Finished difference Result 4477 states and 12400 transitions. [2025-04-13 18:45:13,151 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2025-04-13 18:45:13,151 INFO L79 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 26 [2025-04-13 18:45:13,151 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:13,159 INFO L225 Difference]: With dead ends: 4477 [2025-04-13 18:45:13,159 INFO L226 Difference]: Without dead ends: 4455 [2025-04-13 18:45:13,160 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2296 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2094, Invalid=9462, Unknown=0, NotChecked=0, Total=11556 [2025-04-13 18:45:13,160 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 515 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2952 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 2952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:13,160 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 0 Invalid, 3249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 2952 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-04-13 18:45:13,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4455 states. [2025-04-13 18:45:13,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4455 to 2958. [2025-04-13 18:45:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2957 states have (on average 2.91511667230301) internal successors, (8620), 2957 states have internal predecessors, (8620), 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 18:45:13,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 8620 transitions. [2025-04-13 18:45:13,720 INFO L79 Accepts]: Start accepts. Automaton has 2958 states and 8620 transitions. Word has length 26 [2025-04-13 18:45:13,720 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:13,720 INFO L485 AbstractCegarLoop]: Abstraction has 2958 states and 8620 transitions. [2025-04-13 18:45:13,720 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 47 states have internal predecessors, (76), 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 18:45:13,720 INFO L278 IsEmpty]: Start isEmpty. Operand 2958 states and 8620 transitions. [2025-04-13 18:45:13,723 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:45:13,723 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:13,723 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:13,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-04-13 18:45:13,923 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-04-13 18:45:13,923 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:13,924 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:13,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1789234482, now seen corresponding path program 27 times [2025-04-13 18:45:13,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:13,924 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821386545] [2025-04-13 18:45:13,924 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:45:13,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:13,928 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:45:13,932 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 26 statements. [2025-04-13 18:45:13,932 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:45:13,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:45:14,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:14,103 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821386545] [2025-04-13 18:45:14,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821386545] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:14,103 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399999646] [2025-04-13 18:45:14,103 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:45:14,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:14,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:14,105 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:14,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-04-13 18:45:14,163 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-13 18:45:14,181 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 26 statements. [2025-04-13 18:45:14,181 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:45:14,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:14,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 18:45:14,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:45:14,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:14,559 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:45:14,559 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 59 [2025-04-13 18:45:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:45:14,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399999646] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:14,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:14,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2025-04-13 18:45:14,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693660361] [2025-04-13 18:45:14,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:14,595 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 18:45:14,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:14,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 18:45:14,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:45:14,596 INFO L87 Difference]: Start difference. First operand 2958 states and 8620 transitions. Second operand has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 27 states have internal predecessors, (51), 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 18:45:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:15,993 INFO L93 Difference]: Finished difference Result 3114 states and 8947 transitions. [2025-04-13 18:45:15,993 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:45:15,994 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 27 states have internal predecessors, (51), 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 26 [2025-04-13 18:45:15,994 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:16,000 INFO L225 Difference]: With dead ends: 3114 [2025-04-13 18:45:16,000 INFO L226 Difference]: Without dead ends: 3059 [2025-04-13 18:45:16,000 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=1594, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:45:16,000 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 98 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:16,000 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 0 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:45:16,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2025-04-13 18:45:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2974. [2025-04-13 18:45:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2973 states have (on average 2.9115371678439286) internal successors, (8656), 2973 states have internal predecessors, (8656), 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 18:45:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 8656 transitions. [2025-04-13 18:45:16,560 INFO L79 Accepts]: Start accepts. Automaton has 2974 states and 8656 transitions. Word has length 26 [2025-04-13 18:45:16,561 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:16,561 INFO L485 AbstractCegarLoop]: Abstraction has 2974 states and 8656 transitions. [2025-04-13 18:45:16,561 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 27 states have internal predecessors, (51), 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 18:45:16,561 INFO L278 IsEmpty]: Start isEmpty. Operand 2974 states and 8656 transitions. [2025-04-13 18:45:16,564 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 18:45:16,564 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:16,564 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:16,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-04-13 18:45:16,764 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-04-13 18:45:16,764 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:16,765 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:16,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1225549470, now seen corresponding path program 28 times [2025-04-13 18:45:16,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:16,765 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536697581] [2025-04-13 18:45:16,765 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:45:16,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:16,769 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:45:16,773 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:45:16,773 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:45:16,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:17,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:17,040 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536697581] [2025-04-13 18:45:17,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536697581] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:17,040 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123803010] [2025-04-13 18:45:17,040 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:45:17,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:17,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:17,042 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:17,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-04-13 18:45:17,093 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-13 18:45:17,107 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 18:45:17,107 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:45:17,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:17,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 18:45:17,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:17,427 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:45:17,427 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 7 [2025-04-13 18:45:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:17,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:17,764 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:45:17,764 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-04-13 18:45:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:17,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123803010] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:17,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:17,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 45 [2025-04-13 18:45:17,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896848729] [2025-04-13 18:45:17,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:17,963 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-04-13 18:45:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:17,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-04-13 18:45:17,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1870, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:45:17,963 INFO L87 Difference]: Start difference. First operand 2974 states and 8656 transitions. Second operand has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 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 18:45:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:22,399 INFO L93 Difference]: Finished difference Result 3966 states and 11035 transitions. [2025-04-13 18:45:22,399 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2025-04-13 18:45:22,399 INFO L79 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 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 26 [2025-04-13 18:45:22,399 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:22,406 INFO L225 Difference]: With dead ends: 3966 [2025-04-13 18:45:22,406 INFO L226 Difference]: Without dead ends: 3321 [2025-04-13 18:45:22,407 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3997 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1993, Invalid=11117, Unknown=0, NotChecked=0, Total=13110 [2025-04-13 18:45:22,408 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 373 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:22,408 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 0 Invalid, 2707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 18:45:22,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2025-04-13 18:45:22,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 2960. [2025-04-13 18:45:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2959 states have (on average 2.9101047651233527) internal successors, (8611), 2959 states have internal predecessors, (8611), 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 18:45:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 8611 transitions. [2025-04-13 18:45:22,958 INFO L79 Accepts]: Start accepts. Automaton has 2960 states and 8611 transitions. Word has length 26 [2025-04-13 18:45:22,958 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:22,958 INFO L485 AbstractCegarLoop]: Abstraction has 2960 states and 8611 transitions. [2025-04-13 18:45:22,958 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 46 states have internal predecessors, (75), 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 18:45:22,958 INFO L278 IsEmpty]: Start isEmpty. Operand 2960 states and 8611 transitions. [2025-04-13 18:45:22,961 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:45:22,961 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:22,961 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:22,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-04-13 18:45:23,161 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-04-13 18:45:23,161 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:23,162 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:23,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2045730063, now seen corresponding path program 29 times [2025-04-13 18:45:23,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:23,162 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911927005] [2025-04-13 18:45:23,162 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:45:23,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:23,167 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 3 equivalence classes. [2025-04-13 18:45:23,177 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:23,177 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:45:23,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:24,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:24,585 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911927005] [2025-04-13 18:45:24,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911927005] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:24,585 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841508804] [2025-04-13 18:45:24,585 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:45:24,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:24,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:24,587 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:24,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-04-13 18:45:24,640 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 3 equivalence classes. [2025-04-13 18:45:24,656 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:24,656 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:45:24,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:24,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-04-13 18:45:24,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:45:24,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:25,181 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:45:25,181 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-04-13 18:45:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:25,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841508804] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:25,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:25,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 10] total 37 [2025-04-13 18:45:25,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604542932] [2025-04-13 18:45:25,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:25,234 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-13 18:45:25,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:25,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-13 18:45:25,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1365, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:45:25,235 INFO L87 Difference]: Start difference. First operand 2960 states and 8611 transitions. Second operand has 39 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 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 18:45:27,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:27,324 INFO L93 Difference]: Finished difference Result 3171 states and 9079 transitions. [2025-04-13 18:45:27,325 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:45:27,325 INFO L79 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 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 27 [2025-04-13 18:45:27,325 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:27,331 INFO L225 Difference]: With dead ends: 3171 [2025-04-13 18:45:27,331 INFO L226 Difference]: Without dead ends: 3131 [2025-04-13 18:45:27,332 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=247, Invalid=2833, Unknown=0, NotChecked=0, Total=3080 [2025-04-13 18:45:27,332 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:27,332 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:45:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2025-04-13 18:45:27,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 2954. [2025-04-13 18:45:27,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2953 states have (on average 2.9112766677954625) internal successors, (8597), 2953 states have internal predecessors, (8597), 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 18:45:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 8597 transitions. [2025-04-13 18:45:27,879 INFO L79 Accepts]: Start accepts. Automaton has 2954 states and 8597 transitions. Word has length 27 [2025-04-13 18:45:27,879 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:27,879 INFO L485 AbstractCegarLoop]: Abstraction has 2954 states and 8597 transitions. [2025-04-13 18:45:27,879 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 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 18:45:27,879 INFO L278 IsEmpty]: Start isEmpty. Operand 2954 states and 8597 transitions. [2025-04-13 18:45:27,882 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:45:27,882 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:27,882 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:27,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-04-13 18:45:28,082 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:28,083 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:28,083 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:28,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1855583581, now seen corresponding path program 30 times [2025-04-13 18:45:28,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:28,083 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122750764] [2025-04-13 18:45:28,083 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:45:28,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:28,087 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 3 equivalence classes. [2025-04-13 18:45:28,097 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:28,097 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:45:28,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:28,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:28,839 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122750764] [2025-04-13 18:45:28,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122750764] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:28,839 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653461044] [2025-04-13 18:45:28,840 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:45:28,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:28,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:28,841 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:28,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-04-13 18:45:28,894 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 3 equivalence classes. [2025-04-13 18:45:28,909 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:28,909 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:45:28,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:28,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-04-13 18:45:28,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:45:29,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:29,401 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:45:29,402 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-04-13 18:45:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:29,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653461044] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:29,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:29,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 10] total 38 [2025-04-13 18:45:29,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109139674] [2025-04-13 18:45:29,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:29,445 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-04-13 18:45:29,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:29,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-04-13 18:45:29,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1436, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 18:45:29,445 INFO L87 Difference]: Start difference. First operand 2954 states and 8597 transitions. Second operand has 40 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 39 states have internal predecessors, (71), 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 18:45:31,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:31,044 INFO L93 Difference]: Finished difference Result 3170 states and 9096 transitions. [2025-04-13 18:45:31,045 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:45:31,045 INFO L79 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 39 states have internal predecessors, (71), 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 27 [2025-04-13 18:45:31,045 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:31,051 INFO L225 Difference]: With dead ends: 3170 [2025-04-13 18:45:31,052 INFO L226 Difference]: Without dead ends: 3142 [2025-04-13 18:45:31,052 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=176, Invalid=2176, Unknown=0, NotChecked=0, Total=2352 [2025-04-13 18:45:31,052 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:31,052 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 0 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:45:31,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2025-04-13 18:45:31,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 2954. [2025-04-13 18:45:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2953 states have (on average 2.9105993904503893) internal successors, (8595), 2953 states have internal predecessors, (8595), 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 18:45:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 8595 transitions. [2025-04-13 18:45:31,694 INFO L79 Accepts]: Start accepts. Automaton has 2954 states and 8595 transitions. Word has length 27 [2025-04-13 18:45:31,694 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:31,694 INFO L485 AbstractCegarLoop]: Abstraction has 2954 states and 8595 transitions. [2025-04-13 18:45:31,694 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 39 states have internal predecessors, (71), 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 18:45:31,694 INFO L278 IsEmpty]: Start isEmpty. Operand 2954 states and 8595 transitions. [2025-04-13 18:45:31,698 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:45:31,698 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:31,698 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:31,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-04-13 18:45:31,898 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:31,898 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:31,899 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:31,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1421902035, now seen corresponding path program 31 times [2025-04-13 18:45:31,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:31,899 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249768497] [2025-04-13 18:45:31,899 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:45:31,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:31,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 18:45:31,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:31,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:31,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:32,929 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:32,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:32,929 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249768497] [2025-04-13 18:45:32,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249768497] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:32,929 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901112780] [2025-04-13 18:45:32,929 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:45:32,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:32,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:32,931 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:32,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-04-13 18:45:32,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 18:45:32,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:32,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:32,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:33,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-04-13 18:45:33,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:45:33,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:33,555 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:45:33,555 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-04-13 18:45:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:33,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901112780] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:33,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:33,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 10] total 39 [2025-04-13 18:45:33,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910818000] [2025-04-13 18:45:33,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:33,605 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-04-13 18:45:33,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:33,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-04-13 18:45:33,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1534, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:45:33,606 INFO L87 Difference]: Start difference. First operand 2954 states and 8595 transitions. Second operand has 41 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 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 18:45:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:36,203 INFO L93 Difference]: Finished difference Result 3208 states and 9173 transitions. [2025-04-13 18:45:36,204 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 18:45:36,204 INFO L79 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 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 27 [2025-04-13 18:45:36,204 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:36,210 INFO L225 Difference]: With dead ends: 3208 [2025-04-13 18:45:36,210 INFO L226 Difference]: Without dead ends: 3167 [2025-04-13 18:45:36,211 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=242, Invalid=3664, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 18:45:36,211 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3725 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:36,211 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 3746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3725 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-04-13 18:45:36,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2025-04-13 18:45:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 2954. [2025-04-13 18:45:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2953 states have (on average 2.9099221131053166) internal successors, (8593), 2953 states have internal predecessors, (8593), 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 18:45:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 8593 transitions. [2025-04-13 18:45:36,750 INFO L79 Accepts]: Start accepts. Automaton has 2954 states and 8593 transitions. Word has length 27 [2025-04-13 18:45:36,751 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:36,751 INFO L485 AbstractCegarLoop]: Abstraction has 2954 states and 8593 transitions. [2025-04-13 18:45:36,751 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 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 18:45:36,751 INFO L278 IsEmpty]: Start isEmpty. Operand 2954 states and 8593 transitions. [2025-04-13 18:45:36,754 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:45:36,754 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:36,754 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:36,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-04-13 18:45:36,954 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:36,954 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:36,955 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:36,955 INFO L85 PathProgramCache]: Analyzing trace with hash 858217023, now seen corresponding path program 32 times [2025-04-13 18:45:36,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:36,955 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035875239] [2025-04-13 18:45:36,955 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:45:36,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:36,959 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:45:36,966 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:36,966 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:45:36,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:38,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:38,038 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035875239] [2025-04-13 18:45:38,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035875239] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:38,038 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554497021] [2025-04-13 18:45:38,038 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:45:38,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:38,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:38,040 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:38,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-04-13 18:45:38,093 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:45:38,108 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:38,109 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:45:38,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:38,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 18:45:38,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:45:38,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:38,694 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:45:38,694 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 56 [2025-04-13 18:45:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:38,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554497021] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:38,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:38,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 10] total 39 [2025-04-13 18:45:38,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011722176] [2025-04-13 18:45:38,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:38,739 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-04-13 18:45:38,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:38,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-04-13 18:45:38,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:45:38,740 INFO L87 Difference]: Start difference. First operand 2954 states and 8593 transitions. Second operand has 41 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 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 18:45:42,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:42,096 INFO L93 Difference]: Finished difference Result 3314 states and 9390 transitions. [2025-04-13 18:45:42,096 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-04-13 18:45:42,097 INFO L79 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 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 27 [2025-04-13 18:45:42,097 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:42,103 INFO L225 Difference]: With dead ends: 3314 [2025-04-13 18:45:42,104 INFO L226 Difference]: Without dead ends: 3277 [2025-04-13 18:45:42,104 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=415, Invalid=6227, Unknown=0, NotChecked=0, Total=6642 [2025-04-13 18:45:42,105 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 180 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3692 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:42,105 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 0 Invalid, 3744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3692 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-04-13 18:45:42,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2025-04-13 18:45:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2956. [2025-04-13 18:45:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 2955 states have (on average 2.9089678510998307) internal successors, (8596), 2955 states have internal predecessors, (8596), 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 18:45:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 8596 transitions. [2025-04-13 18:45:42,646 INFO L79 Accepts]: Start accepts. Automaton has 2956 states and 8596 transitions. Word has length 27 [2025-04-13 18:45:42,646 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:42,646 INFO L485 AbstractCegarLoop]: Abstraction has 2956 states and 8596 transitions. [2025-04-13 18:45:42,646 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 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 18:45:42,646 INFO L278 IsEmpty]: Start isEmpty. Operand 2956 states and 8596 transitions. [2025-04-13 18:45:42,649 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:45:42,649 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:42,650 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:42,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-04-13 18:45:42,850 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-04-13 18:45:42,850 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:42,850 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:42,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2086722661, now seen corresponding path program 33 times [2025-04-13 18:45:42,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:42,851 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71198933] [2025-04-13 18:45:42,851 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:45:42,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:42,855 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 3 equivalence classes. [2025-04-13 18:45:42,860 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 27 statements. [2025-04-13 18:45:42,860 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:45:42,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:43,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:43,022 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71198933] [2025-04-13 18:45:43,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71198933] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:43,023 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820094796] [2025-04-13 18:45:43,023 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:45:43,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:43,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:43,025 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:43,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-04-13 18:45:43,081 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 3 equivalence classes. [2025-04-13 18:45:43,097 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 27 statements. [2025-04-13 18:45:43,097 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:45:43,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:43,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 18:45:43,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:43,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:43,422 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:45:43,422 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-04-13 18:45:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:43,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820094796] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:43,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:43,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2025-04-13 18:45:43,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186539157] [2025-04-13 18:45:43,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:43,457 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-13 18:45:43,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:43,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-13 18:45:43,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2025-04-13 18:45:43,458 INFO L87 Difference]: Start difference. First operand 2956 states and 8596 transitions. Second operand has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 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 18:45:44,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:44,923 INFO L93 Difference]: Finished difference Result 3116 states and 8957 transitions. [2025-04-13 18:45:44,923 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:45:44,923 INFO L79 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 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 27 [2025-04-13 18:45:44,923 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:44,929 INFO L225 Difference]: With dead ends: 3116 [2025-04-13 18:45:44,929 INFO L226 Difference]: Without dead ends: 3054 [2025-04-13 18:45:44,930 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:45:44,930 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:44,930 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 0 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:45:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2025-04-13 18:45:45,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2968. [2025-04-13 18:45:45,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2967 states have (on average 2.90798786653185) internal successors, (8628), 2967 states have internal predecessors, (8628), 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 18:45:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 8628 transitions. [2025-04-13 18:45:45,483 INFO L79 Accepts]: Start accepts. Automaton has 2968 states and 8628 transitions. Word has length 27 [2025-04-13 18:45:45,483 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:45,483 INFO L485 AbstractCegarLoop]: Abstraction has 2968 states and 8628 transitions. [2025-04-13 18:45:45,483 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 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 18:45:45,483 INFO L278 IsEmpty]: Start isEmpty. Operand 2968 states and 8628 transitions. [2025-04-13 18:45:45,486 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:45:45,486 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:45,486 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:45,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:45,686 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-04-13 18:45:45,687 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:45,687 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:45,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1321618357, now seen corresponding path program 34 times [2025-04-13 18:45:45,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:45,687 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999490984] [2025-04-13 18:45:45,687 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:45:45,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:45,695 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:45:45,700 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:45,700 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:45:45,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:45,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:45,858 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999490984] [2025-04-13 18:45:45,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999490984] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:45,858 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225133752] [2025-04-13 18:45:45,859 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:45:45,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:45,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:45,860 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:45,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-04-13 18:45:45,917 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:45:45,933 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:45,933 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:45:45,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:45,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 18:45:45,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:45:46,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:46,315 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:45:46,315 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 56 [2025-04-13 18:45:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:46,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225133752] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:46,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:46,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 29 [2025-04-13 18:45:46,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215888059] [2025-04-13 18:45:46,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:46,341 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 18:45:46,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:46,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 18:45:46,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:45:46,342 INFO L87 Difference]: Start difference. First operand 2968 states and 8628 transitions. Second operand has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 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 18:45:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:47,916 INFO L93 Difference]: Finished difference Result 3156 states and 9049 transitions. [2025-04-13 18:45:47,916 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 18:45:47,916 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 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 27 [2025-04-13 18:45:47,916 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:47,922 INFO L225 Difference]: With dead ends: 3156 [2025-04-13 18:45:47,922 INFO L226 Difference]: Without dead ends: 3094 [2025-04-13 18:45:47,922 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=238, Invalid=2114, Unknown=0, NotChecked=0, Total=2352 [2025-04-13 18:45:47,923 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 93 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:47,923 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 0 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:45:47,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2025-04-13 18:45:48,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 2968. [2025-04-13 18:45:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2967 states have (on average 2.9059656218402425) internal successors, (8622), 2967 states have internal predecessors, (8622), 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 18:45:48,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 8622 transitions. [2025-04-13 18:45:48,466 INFO L79 Accepts]: Start accepts. Automaton has 2968 states and 8622 transitions. Word has length 27 [2025-04-13 18:45:48,467 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:48,467 INFO L485 AbstractCegarLoop]: Abstraction has 2968 states and 8622 transitions. [2025-04-13 18:45:48,467 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 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 18:45:48,467 INFO L278 IsEmpty]: Start isEmpty. Operand 2968 states and 8622 transitions. [2025-04-13 18:45:48,470 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:45:48,470 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:48,470 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:48,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:48,670 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-04-13 18:45:48,670 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:48,671 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1799509413, now seen corresponding path program 35 times [2025-04-13 18:45:48,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:48,671 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103892284] [2025-04-13 18:45:48,671 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:45:48,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:48,675 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 3 equivalence classes. [2025-04-13 18:45:48,682 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:48,682 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:45:48,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:49,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:49,095 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103892284] [2025-04-13 18:45:49,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103892284] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:49,095 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071860893] [2025-04-13 18:45:49,095 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:45:49,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:49,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:49,097 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:49,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-04-13 18:45:49,152 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 3 equivalence classes. [2025-04-13 18:45:49,173 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:49,173 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:45:49,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:49,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 18:45:49,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:49,447 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:45:49,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:49,678 INFO L325 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2025-04-13 18:45:49,678 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 43 [2025-04-13 18:45:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:49,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071860893] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:49,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:49,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 10] total 38 [2025-04-13 18:45:49,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680370813] [2025-04-13 18:45:49,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:49,761 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-04-13 18:45:49,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:49,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-04-13 18:45:49,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1393, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 18:45:49,762 INFO L87 Difference]: Start difference. First operand 2968 states and 8622 transitions. Second operand has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 39 states have internal predecessors, (73), 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 18:45:51,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:51,508 INFO L93 Difference]: Finished difference Result 3127 states and 8976 transitions. [2025-04-13 18:45:51,508 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 18:45:51,508 INFO L79 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 39 states have internal predecessors, (73), 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 27 [2025-04-13 18:45:51,508 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:51,515 INFO L225 Difference]: With dead ends: 3127 [2025-04-13 18:45:51,515 INFO L226 Difference]: Without dead ends: 3076 [2025-04-13 18:45:51,516 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=369, Invalid=3413, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 18:45:51,516 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 140 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:51,516 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 0 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:45:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2025-04-13 18:45:52,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 2966. [2025-04-13 18:45:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2965 states have (on average 2.904890387858347) internal successors, (8613), 2965 states have internal predecessors, (8613), 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 18:45:52,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 8613 transitions. [2025-04-13 18:45:52,075 INFO L79 Accepts]: Start accepts. Automaton has 2966 states and 8613 transitions. Word has length 27 [2025-04-13 18:45:52,075 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:52,075 INFO L485 AbstractCegarLoop]: Abstraction has 2966 states and 8613 transitions. [2025-04-13 18:45:52,075 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 39 states have internal predecessors, (73), 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 18:45:52,075 INFO L278 IsEmpty]: Start isEmpty. Operand 2966 states and 8613 transitions. [2025-04-13 18:45:52,078 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:45:52,078 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:52,078 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:52,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2025-04-13 18:45:52,278 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-04-13 18:45:52,278 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:52,279 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:52,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2062040237, now seen corresponding path program 36 times [2025-04-13 18:45:52,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:52,279 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39625772] [2025-04-13 18:45:52,279 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:45:52,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:52,284 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 3 equivalence classes. [2025-04-13 18:45:52,291 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:52,291 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:45:52,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:52,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:52,818 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39625772] [2025-04-13 18:45:52,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39625772] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:52,818 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659639081] [2025-04-13 18:45:52,818 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:45:52,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:52,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:52,820 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:52,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-04-13 18:45:52,878 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 3 equivalence classes. [2025-04-13 18:45:52,895 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:52,896 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:45:52,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:52,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-13 18:45:52,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:45:53,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:53,387 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:45:53,387 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 56 [2025-04-13 18:45:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:53,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659639081] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:53,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:53,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 10] total 37 [2025-04-13 18:45:53,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709855590] [2025-04-13 18:45:53,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:53,432 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-13 18:45:53,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:53,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-13 18:45:53,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:45:53,432 INFO L87 Difference]: Start difference. First operand 2966 states and 8613 transitions. Second operand has 39 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 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 18:45:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:55,612 INFO L93 Difference]: Finished difference Result 3170 states and 9037 transitions. [2025-04-13 18:45:55,612 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-04-13 18:45:55,613 INFO L79 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 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 27 [2025-04-13 18:45:55,613 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:55,619 INFO L225 Difference]: With dead ends: 3170 [2025-04-13 18:45:55,619 INFO L226 Difference]: Without dead ends: 3056 [2025-04-13 18:45:55,620 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=332, Invalid=4090, Unknown=0, NotChecked=0, Total=4422 [2025-04-13 18:45:55,620 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 163 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:55,620 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 0 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:45:55,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2025-04-13 18:45:56,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2970. [2025-04-13 18:45:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2969 states have (on average 2.902997642303806) internal successors, (8619), 2969 states have internal predecessors, (8619), 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 18:45:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 8619 transitions. [2025-04-13 18:45:56,178 INFO L79 Accepts]: Start accepts. Automaton has 2970 states and 8619 transitions. Word has length 27 [2025-04-13 18:45:56,178 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:56,178 INFO L485 AbstractCegarLoop]: Abstraction has 2970 states and 8619 transitions. [2025-04-13 18:45:56,178 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 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 18:45:56,178 INFO L278 IsEmpty]: Start isEmpty. Operand 2970 states and 8619 transitions. [2025-04-13 18:45:56,180 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:45:56,180 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:56,180 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:56,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2025-04-13 18:45:56,381 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:56,381 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:56,381 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1164236051, now seen corresponding path program 37 times [2025-04-13 18:45:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:56,381 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335632950] [2025-04-13 18:45:56,381 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:45:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:56,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 18:45:56,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:56,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:56,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:57,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:57,140 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335632950] [2025-04-13 18:45:57,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335632950] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:57,141 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429381010] [2025-04-13 18:45:57,141 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:45:57,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:57,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:57,142 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:57,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-04-13 18:45:57,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 18:45:57,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:57,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:45:57,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:57,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-04-13 18:45:57,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:45:57,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:57,758 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:45:57,758 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-04-13 18:45:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:45:57,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429381010] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:57,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:57,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 10] total 39 [2025-04-13 18:45:57,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723723496] [2025-04-13 18:45:57,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:57,809 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-04-13 18:45:57,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:57,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-04-13 18:45:57,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1525, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:45:57,809 INFO L87 Difference]: Start difference. First operand 2970 states and 8619 transitions. Second operand has 41 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 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 18:46:00,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:00,131 INFO L93 Difference]: Finished difference Result 3178 states and 9071 transitions. [2025-04-13 18:46:00,131 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-04-13 18:46:00,131 INFO L79 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 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 27 [2025-04-13 18:46:00,131 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:00,137 INFO L225 Difference]: With dead ends: 3178 [2025-04-13 18:46:00,137 INFO L226 Difference]: Without dead ends: 3085 [2025-04-13 18:46:00,138 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=291, Invalid=4131, Unknown=0, NotChecked=0, Total=4422 [2025-04-13 18:46:00,138 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:00,138 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 0 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 18:46:00,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2025-04-13 18:46:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2970. [2025-04-13 18:46:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2969 states have (on average 2.9023240148198046) internal successors, (8617), 2969 states have internal predecessors, (8617), 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 18:46:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 8617 transitions. [2025-04-13 18:46:00,685 INFO L79 Accepts]: Start accepts. Automaton has 2970 states and 8617 transitions. Word has length 27 [2025-04-13 18:46:00,685 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:00,685 INFO L485 AbstractCegarLoop]: Abstraction has 2970 states and 8617 transitions. [2025-04-13 18:46:00,685 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 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 18:46:00,685 INFO L278 IsEmpty]: Start isEmpty. Operand 2970 states and 8617 transitions. [2025-04-13 18:46:00,688 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:46:00,688 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:00,688 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:00,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2025-04-13 18:46:00,888 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-04-13 18:46:00,888 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:00,889 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash -700652823, now seen corresponding path program 38 times [2025-04-13 18:46:00,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:00,889 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170996070] [2025-04-13 18:46:00,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:46:00,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:00,893 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:46:00,900 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:46:00,900 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:46:00,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:01,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:01,439 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170996070] [2025-04-13 18:46:01,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170996070] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:01,439 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348812779] [2025-04-13 18:46:01,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:46:01,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:01,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:01,441 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:01,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2025-04-13 18:46:01,499 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:46:01,513 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:46:01,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:46:01,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:01,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 18:46:01,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:46:01,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:01,960 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:46:01,960 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 56 [2025-04-13 18:46:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:46:02,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348812779] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:02,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:02,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 10] total 36 [2025-04-13 18:46:02,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973498616] [2025-04-13 18:46:02,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:02,007 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-04-13 18:46:02,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:02,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-04-13 18:46:02,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:46:02,007 INFO L87 Difference]: Start difference. First operand 2970 states and 8617 transitions. Second operand has 38 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 37 states have internal predecessors, (67), 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 18:46:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:03,987 INFO L93 Difference]: Finished difference Result 3197 states and 9124 transitions. [2025-04-13 18:46:03,988 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-04-13 18:46:03,988 INFO L79 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 37 states have internal predecessors, (67), 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 27 [2025-04-13 18:46:03,988 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:03,994 INFO L225 Difference]: With dead ends: 3197 [2025-04-13 18:46:03,994 INFO L226 Difference]: Without dead ends: 3122 [2025-04-13 18:46:03,994 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=327, Invalid=3579, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 18:46:03,994 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:03,994 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 0 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1735 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:46:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2025-04-13 18:46:04,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2972. [2025-04-13 18:46:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2971 states have (on average 2.9007068327162573) internal successors, (8618), 2971 states have internal predecessors, (8618), 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 18:46:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 8618 transitions. [2025-04-13 18:46:04,550 INFO L79 Accepts]: Start accepts. Automaton has 2972 states and 8618 transitions. Word has length 27 [2025-04-13 18:46:04,550 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:04,550 INFO L485 AbstractCegarLoop]: Abstraction has 2972 states and 8618 transitions. [2025-04-13 18:46:04,550 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 37 states have internal predecessors, (67), 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 18:46:04,550 INFO L278 IsEmpty]: Start isEmpty. Operand 2972 states and 8618 transitions. [2025-04-13 18:46:04,553 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:46:04,553 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:04,553 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:04,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2025-04-13 18:46:04,753 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-04-13 18:46:04,753 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:04,754 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:04,754 INFO L85 PathProgramCache]: Analyzing trace with hash 705020631, now seen corresponding path program 39 times [2025-04-13 18:46:04,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:04,754 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749787716] [2025-04-13 18:46:04,754 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:46:04,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:04,758 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 3 equivalence classes. [2025-04-13 18:46:04,762 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 27 statements. [2025-04-13 18:46:04,762 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:46:04,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:46:04,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:04,906 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749787716] [2025-04-13 18:46:04,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749787716] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:04,906 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141762174] [2025-04-13 18:46:04,906 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:46:04,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:04,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:04,908 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:04,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-04-13 18:46:04,969 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 3 equivalence classes. [2025-04-13 18:46:04,982 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 27 statements. [2025-04-13 18:46:04,982 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:46:04,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:04,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 18:46:04,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:46:05,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:05,277 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:46:05,278 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 56 [2025-04-13 18:46:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:46:05,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141762174] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:05,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:05,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2025-04-13 18:46:05,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521111909] [2025-04-13 18:46:05,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:05,319 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 18:46:05,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:05,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 18:46:05,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:46:05,319 INFO L87 Difference]: Start difference. First operand 2972 states and 8618 transitions. Second operand has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 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 18:46:06,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:06,702 INFO L93 Difference]: Finished difference Result 3124 states and 8938 transitions. [2025-04-13 18:46:06,702 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:46:06,702 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 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 27 [2025-04-13 18:46:06,702 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:06,709 INFO L225 Difference]: With dead ends: 3124 [2025-04-13 18:46:06,709 INFO L226 Difference]: Without dead ends: 3060 [2025-04-13 18:46:06,709 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=217, Invalid=1505, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:46:06,709 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:06,710 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:46:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2025-04-13 18:46:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 2978. [2025-04-13 18:46:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2977 states have (on average 2.897883775613033) internal successors, (8627), 2977 states have internal predecessors, (8627), 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 18:46:07,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 8627 transitions. [2025-04-13 18:46:07,268 INFO L79 Accepts]: Start accepts. Automaton has 2978 states and 8627 transitions. Word has length 27 [2025-04-13 18:46:07,268 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:07,268 INFO L485 AbstractCegarLoop]: Abstraction has 2978 states and 8627 transitions. [2025-04-13 18:46:07,268 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 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 18:46:07,268 INFO L278 IsEmpty]: Start isEmpty. Operand 2978 states and 8627 transitions. [2025-04-13 18:46:07,271 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:46:07,271 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:07,271 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:07,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2025-04-13 18:46:07,471 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2025-04-13 18:46:07,471 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:07,472 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1550543481, now seen corresponding path program 40 times [2025-04-13 18:46:07,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:07,472 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848562245] [2025-04-13 18:46:07,472 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:46:07,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:07,476 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:46:07,481 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:46:07,481 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:46:07,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:46:07,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:07,626 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848562245] [2025-04-13 18:46:07,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848562245] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:07,626 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382294510] [2025-04-13 18:46:07,626 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:46:07,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:07,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:07,628 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:07,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2025-04-13 18:46:07,689 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:46:07,703 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:46:07,703 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:46:07,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:07,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 18:46:07,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:46:07,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:08,073 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:46:08,073 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 56 [2025-04-13 18:46:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-04-13 18:46:08,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382294510] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:08,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:08,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 29 [2025-04-13 18:46:08,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781115391] [2025-04-13 18:46:08,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:08,097 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 18:46:08,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:08,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 18:46:08,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:46:08,098 INFO L87 Difference]: Start difference. First operand 2978 states and 8627 transitions. Second operand has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 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 18:46:09,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:09,520 INFO L93 Difference]: Finished difference Result 3114 states and 8910 transitions. [2025-04-13 18:46:09,520 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 18:46:09,520 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 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 27 [2025-04-13 18:46:09,520 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:09,527 INFO L225 Difference]: With dead ends: 3114 [2025-04-13 18:46:09,527 INFO L226 Difference]: Without dead ends: 3049 [2025-04-13 18:46:09,527 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=241, Invalid=2015, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 18:46:09,528 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 100 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:09,528 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 0 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:46:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2025-04-13 18:46:10,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2980. [2025-04-13 18:46:10,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2979 states have (on average 2.896273917421954) internal successors, (8628), 2979 states have internal predecessors, (8628), 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 18:46:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 8628 transitions. [2025-04-13 18:46:10,093 INFO L79 Accepts]: Start accepts. Automaton has 2980 states and 8628 transitions. Word has length 27 [2025-04-13 18:46:10,093 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:10,093 INFO L485 AbstractCegarLoop]: Abstraction has 2980 states and 8628 transitions. [2025-04-13 18:46:10,093 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 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 18:46:10,093 INFO L278 IsEmpty]: Start isEmpty. Operand 2980 states and 8628 transitions. [2025-04-13 18:46:10,096 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 18:46:10,096 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:10,096 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:10,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2025-04-13 18:46:10,296 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:10,296 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:10,297 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:10,297 INFO L85 PathProgramCache]: Analyzing trace with hash 247196136, now seen corresponding path program 41 times [2025-04-13 18:46:10,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:10,297 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66744780] [2025-04-13 18:46:10,297 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:46:10,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:10,301 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-04-13 18:46:10,304 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:46:10,304 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:46:10,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:46:10,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:10,361 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66744780] [2025-04-13 18:46:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66744780] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:10,361 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017441122] [2025-04-13 18:46:10,361 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:46:10,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:10,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:10,363 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:10,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-04-13 18:46:10,424 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-04-13 18:46:10,438 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:46:10,438 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:46:10,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:10,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:46:10,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:46:10,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:46:10,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017441122] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:10,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:10,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-04-13 18:46:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767877432] [2025-04-13 18:46:10,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:10,581 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:46:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:10,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:46:10,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:46:10,582 INFO L87 Difference]: Start difference. First operand 2980 states and 8628 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 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 18:46:11,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:11,209 INFO L93 Difference]: Finished difference Result 3536 states and 9992 transitions. [2025-04-13 18:46:11,209 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 18:46:11,210 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 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 28 [2025-04-13 18:46:11,210 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:11,213 INFO L225 Difference]: With dead ends: 3536 [2025-04-13 18:46:11,213 INFO L226 Difference]: Without dead ends: 498 [2025-04-13 18:46:11,215 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:46:11,215 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:11,215 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:46:11,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2025-04-13 18:46:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 432. [2025-04-13 18:46:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 2.417633410672854) internal successors, (1042), 431 states have internal predecessors, (1042), 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 18:46:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1042 transitions. [2025-04-13 18:46:11,325 INFO L79 Accepts]: Start accepts. Automaton has 432 states and 1042 transitions. Word has length 28 [2025-04-13 18:46:11,325 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:11,325 INFO L485 AbstractCegarLoop]: Abstraction has 432 states and 1042 transitions. [2025-04-13 18:46:11,326 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 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 18:46:11,326 INFO L278 IsEmpty]: Start isEmpty. Operand 432 states and 1042 transitions. [2025-04-13 18:46:11,326 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-04-13 18:46:11,326 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:11,326 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:11,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2025-04-13 18:46:11,526 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:11,527 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:11,527 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash 623415298, now seen corresponding path program 42 times [2025-04-13 18:46:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:11,527 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292758301] [2025-04-13 18:46:11,527 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:46:11,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:11,531 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 4 equivalence classes. [2025-04-13 18:46:11,535 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:46:11,535 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:46:11,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:46:11,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:11,568 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292758301] [2025-04-13 18:46:11,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292758301] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:11,569 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900451931] [2025-04-13 18:46:11,569 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:46:11,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:11,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:11,570 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:11,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2025-04-13 18:46:11,631 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 4 equivalence classes. [2025-04-13 18:46:11,648 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-04-13 18:46:11,648 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:46:11,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:11,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:46:11,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:46:11,665 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:46:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900451931] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:11,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:11,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8] total 12 [2025-04-13 18:46:11,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525070253] [2025-04-13 18:46:11,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:11,742 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:46:11,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:11,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:46:11,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:46:11,742 INFO L87 Difference]: Start difference. First operand 432 states and 1042 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 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 18:46:12,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:12,094 INFO L93 Difference]: Finished difference Result 743 states and 1781 transitions. [2025-04-13 18:46:12,094 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:46:12,095 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 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 28 [2025-04-13 18:46:12,095 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:12,097 INFO L225 Difference]: With dead ends: 743 [2025-04-13 18:46:12,097 INFO L226 Difference]: Without dead ends: 627 [2025-04-13 18:46:12,098 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:46:12,098 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:12,098 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:46:12,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2025-04-13 18:46:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 470. [2025-04-13 18:46:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 2.488272921108742) internal successors, (1167), 469 states have internal predecessors, (1167), 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 18:46:12,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1167 transitions. [2025-04-13 18:46:12,245 INFO L79 Accepts]: Start accepts. Automaton has 470 states and 1167 transitions. Word has length 28 [2025-04-13 18:46:12,245 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:12,245 INFO L485 AbstractCegarLoop]: Abstraction has 470 states and 1167 transitions. [2025-04-13 18:46:12,245 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 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 18:46:12,245 INFO L278 IsEmpty]: Start isEmpty. Operand 470 states and 1167 transitions. [2025-04-13 18:46:12,245 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-13 18:46:12,245 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:12,245 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:12,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2025-04-13 18:46:12,446 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:12,446 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:12,446 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1331085363, now seen corresponding path program 43 times [2025-04-13 18:46:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:12,446 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403650574] [2025-04-13 18:46:12,446 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:46:12,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:12,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 18:46:12,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 18:46:12,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:46:12,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:12,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:12,725 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403650574] [2025-04-13 18:46:12,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403650574] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:12,725 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72145808] [2025-04-13 18:46:12,725 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:46:12,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:12,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:12,727 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:12,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2025-04-13 18:46:12,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-13 18:46:12,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-13 18:46:12,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:46:12,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:12,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 18:46:12,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:13,016 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:13,130 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:46:13,130 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2025-04-13 18:46:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:13,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72145808] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:13,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:13,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2025-04-13 18:46:13,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496565970] [2025-04-13 18:46:13,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:13,415 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-04-13 18:46:13,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:13,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-04-13 18:46:13,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1339, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 18:46:13,416 INFO L87 Difference]: Start difference. First operand 470 states and 1167 transitions. Second operand has 40 states, 40 states have (on average 1.95) internal successors, (78), 39 states have internal predecessors, (78), 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 18:46:22,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:22,699 INFO L93 Difference]: Finished difference Result 3876 states and 10106 transitions. [2025-04-13 18:46:22,699 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2025-04-13 18:46:22,699 INFO L79 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.95) internal successors, (78), 39 states have internal predecessors, (78), 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 18:46:22,699 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:22,706 INFO L225 Difference]: With dead ends: 3876 [2025-04-13 18:46:22,706 INFO L226 Difference]: Without dead ends: 3808 [2025-04-13 18:46:22,708 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12453 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=5625, Invalid=33381, Unknown=0, NotChecked=0, Total=39006 [2025-04-13 18:46:22,709 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 783 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6291 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 6291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:22,709 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 0 Invalid, 6391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 6291 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-04-13 18:46:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2025-04-13 18:46:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 1421. [2025-04-13 18:46:23,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 2.8380281690140845) internal successors, (4030), 1420 states have internal predecessors, (4030), 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 18:46:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 4030 transitions. [2025-04-13 18:46:23,017 INFO L79 Accepts]: Start accepts. Automaton has 1421 states and 4030 transitions. Word has length 29 [2025-04-13 18:46:23,017 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:23,017 INFO L485 AbstractCegarLoop]: Abstraction has 1421 states and 4030 transitions. [2025-04-13 18:46:23,017 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.95) internal successors, (78), 39 states have internal predecessors, (78), 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 18:46:23,017 INFO L278 IsEmpty]: Start isEmpty. Operand 1421 states and 4030 transitions. [2025-04-13 18:46:23,018 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-04-13 18:46:23,018 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:23,018 INFO L218 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:23,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2025-04-13 18:46:23,219 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2025-04-13 18:46:23,219 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:23,219 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:23,219 INFO L85 PathProgramCache]: Analyzing trace with hash -202676898, now seen corresponding path program 44 times [2025-04-13 18:46:23,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:23,219 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898042331] [2025-04-13 18:46:23,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:46:23,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:23,224 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-04-13 18:46:23,228 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-04-13 18:46:23,228 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:46:23,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 18:46:23,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:23,302 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898042331] [2025-04-13 18:46:23,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898042331] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:23,302 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203339819] [2025-04-13 18:46:23,302 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:46:23,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:23,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:23,304 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:23,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2025-04-13 18:46:23,368 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-04-13 18:46:23,383 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-04-13 18:46:23,383 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:46:23,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:23,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 18:46:23,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:46:23,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:23,477 INFO L325 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-04-13 18:46:23,477 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2025-04-13 18:46:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-04-13 18:46:23,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203339819] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:23,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:23,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 8] total 17 [2025-04-13 18:46:23,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747430921] [2025-04-13 18:46:23,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:23,488 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:46:23,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:23,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:46:23,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:46:23,488 INFO L87 Difference]: Start difference. First operand 1421 states and 4030 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 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 18:46:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:24,988 INFO L93 Difference]: Finished difference Result 2477 states and 6792 transitions. [2025-04-13 18:46:24,988 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 18:46:24,989 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 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 30 [2025-04-13 18:46:24,989 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:24,994 INFO L225 Difference]: With dead ends: 2477 [2025-04-13 18:46:24,994 INFO L226 Difference]: Without dead ends: 2464 [2025-04-13 18:46:24,994 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:46:24,995 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 183 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:24,995 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 0 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:46:24,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2025-04-13 18:46:25,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1355. [2025-04-13 18:46:25,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1354 states have (on average 2.8301329394387) internal successors, (3832), 1354 states have internal predecessors, (3832), 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 18:46:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 3832 transitions. [2025-04-13 18:46:25,265 INFO L79 Accepts]: Start accepts. Automaton has 1355 states and 3832 transitions. Word has length 30 [2025-04-13 18:46:25,265 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:25,265 INFO L485 AbstractCegarLoop]: Abstraction has 1355 states and 3832 transitions. [2025-04-13 18:46:25,265 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 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 18:46:25,265 INFO L278 IsEmpty]: Start isEmpty. Operand 1355 states and 3832 transitions. [2025-04-13 18:46:25,266 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:46:25,266 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:25,266 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:25,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2025-04-13 18:46:25,466 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2025-04-13 18:46:25,466 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:25,467 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:25,467 INFO L85 PathProgramCache]: Analyzing trace with hash 664260943, now seen corresponding path program 45 times [2025-04-13 18:46:25,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:25,467 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126234310] [2025-04-13 18:46:25,467 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:46:25,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:25,472 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-04-13 18:46:25,479 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:46:25,479 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:46:25,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:26,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:26,232 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126234310] [2025-04-13 18:46:26,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126234310] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:26,232 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954451415] [2025-04-13 18:46:26,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:46:26,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:26,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:26,234 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:26,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2025-04-13 18:46:26,298 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-04-13 18:46:26,317 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:46:26,318 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:46:26,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:26,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-04-13 18:46:26,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:27,028 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 18:46:27,029 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 18:46:27,031 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:46:27,032 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 23 [2025-04-13 18:46:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:27,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:27,999 INFO L325 Elim1Store]: treesize reduction 48, result has 53.4 percent of original size [2025-04-13 18:46:27,999 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 73 treesize of output 76 [2025-04-13 18:46:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:28,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954451415] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:28,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:28,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 61 [2025-04-13 18:46:28,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659943776] [2025-04-13 18:46:28,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:28,405 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-04-13 18:46:28,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:28,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-04-13 18:46:28,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=3198, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 18:46:28,406 INFO L87 Difference]: Start difference. First operand 1355 states and 3832 transitions. Second operand has 63 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 62 states have internal predecessors, (85), 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 18:47:02,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:47:02,085 INFO L93 Difference]: Finished difference Result 9128 states and 25737 transitions. [2025-04-13 18:47:02,086 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2025-04-13 18:47:02,086 INFO L79 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 62 states have internal predecessors, (85), 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 31 [2025-04-13 18:47:02,086 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:47:02,102 INFO L225 Difference]: With dead ends: 9128 [2025-04-13 18:47:02,102 INFO L226 Difference]: Without dead ends: 8130 [2025-04-13 18:47:02,107 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33442 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=12460, Invalid=77240, Unknown=0, NotChecked=0, Total=89700 [2025-04-13 18:47:02,107 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1122 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7395 mSolverCounterSat, 905 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 905 IncrementalHoareTripleChecker+Valid, 7395 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:47:02,107 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 0 Invalid, 8302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [905 Valid, 7395 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2025-04-13 18:47:02,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8130 states. [2025-04-13 18:47:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8130 to 4158. [2025-04-13 18:47:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4158 states, 4157 states have (on average 2.9405821505893672) internal successors, (12224), 4157 states have internal predecessors, (12224), 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 18:47:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4158 states to 4158 states and 12224 transitions. [2025-04-13 18:47:03,311 INFO L79 Accepts]: Start accepts. Automaton has 4158 states and 12224 transitions. Word has length 31 [2025-04-13 18:47:03,311 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:47:03,311 INFO L485 AbstractCegarLoop]: Abstraction has 4158 states and 12224 transitions. [2025-04-13 18:47:03,311 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 62 states have internal predecessors, (85), 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 18:47:03,311 INFO L278 IsEmpty]: Start isEmpty. Operand 4158 states and 12224 transitions. [2025-04-13 18:47:03,313 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:47:03,313 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:47:03,313 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:47:03,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2025-04-13 18:47:03,513 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2025-04-13 18:47:03,513 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:47:03,514 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:47:03,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2019592283, now seen corresponding path program 46 times [2025-04-13 18:47:03,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:47:03,514 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131112955] [2025-04-13 18:47:03,514 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:47:03,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:47:03,519 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-04-13 18:47:03,524 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:47:03,524 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:47:03,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:47:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:47:04,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:47:04,185 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131112955] [2025-04-13 18:47:04,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131112955] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:47:04,185 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315758576] [2025-04-13 18:47:04,185 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:47:04,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:47:04,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:47:04,187 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:47:04,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2025-04-13 18:47:04,253 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-04-13 18:47:04,271 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:47:04,271 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:47:04,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:47:04,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-04-13 18:47:04,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:47:05,127 INFO L325 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2025-04-13 18:47:05,128 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 24 [2025-04-13 18:47:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:47:05,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:47:05,777 INFO L325 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2025-04-13 18:47:05,778 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 106 [2025-04-13 18:47:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:47:06,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315758576] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:47:06,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:47:06,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 61 [2025-04-13 18:47:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286235887] [2025-04-13 18:47:06,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:47:06,264 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-04-13 18:47:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:47:06,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-04-13 18:47:06,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=3532, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 18:47:06,265 INFO L87 Difference]: Start difference. First operand 4158 states and 12224 transitions. Second operand has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 18:47:32,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:47:32,875 INFO L93 Difference]: Finished difference Result 8541 states and 23950 transitions. [2025-04-13 18:47:32,876 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2025-04-13 18:47:32,876 INFO L79 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 31 [2025-04-13 18:47:32,876 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:47:32,891 INFO L225 Difference]: With dead ends: 8541 [2025-04-13 18:47:32,892 INFO L226 Difference]: Without dead ends: 8356 [2025-04-13 18:47:32,894 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21482 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=6615, Invalid=53165, Unknown=0, NotChecked=0, Total=59780 [2025-04-13 18:47:32,895 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1372 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9048 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 9048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:47:32,895 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 0 Invalid, 9895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 9048 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-04-13 18:47:32,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8356 states. [2025-04-13 18:47:34,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8356 to 5124. [2025-04-13 18:47:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5124 states, 5123 states have (on average 2.978918602381417) internal successors, (15261), 5123 states have internal predecessors, (15261), 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 18:47:34,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 15261 transitions. [2025-04-13 18:47:34,432 INFO L79 Accepts]: Start accepts. Automaton has 5124 states and 15261 transitions. Word has length 31 [2025-04-13 18:47:34,432 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:47:34,432 INFO L485 AbstractCegarLoop]: Abstraction has 5124 states and 15261 transitions. [2025-04-13 18:47:34,432 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 18:47:34,433 INFO L278 IsEmpty]: Start isEmpty. Operand 5124 states and 15261 transitions. [2025-04-13 18:47:34,434 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:47:34,434 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:47:34,434 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:47:34,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2025-04-13 18:47:34,635 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2025-04-13 18:47:34,636 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:47:34,636 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:47:34,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1539368139, now seen corresponding path program 47 times [2025-04-13 18:47:34,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:47:34,636 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5671746] [2025-04-13 18:47:34,636 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:47:34,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:47:34,640 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 3 equivalence classes. [2025-04-13 18:47:34,646 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:47:34,646 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:47:34,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:47:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:47:35,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:47:35,289 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5671746] [2025-04-13 18:47:35,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5671746] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:47:35,289 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830657665] [2025-04-13 18:47:35,289 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:47:35,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:47:35,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:47:35,291 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:47:35,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2025-04-13 18:47:35,360 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 3 equivalence classes. [2025-04-13 18:47:35,380 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:47:35,380 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:47:35,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:47:35,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-04-13 18:47:35,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:47:36,218 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 18:47:36,219 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 18:47:36,220 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:47:36,220 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 16 [2025-04-13 18:47:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:47:36,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:47:36,974 INFO L325 Elim1Store]: treesize reduction 18, result has 82.5 percent of original size [2025-04-13 18:47:36,974 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 97 treesize of output 112 [2025-04-13 18:47:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:47:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830657665] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:47:37,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:47:37,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 60 [2025-04-13 18:47:37,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521489768] [2025-04-13 18:47:37,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:47:37,435 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-04-13 18:47:37,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:47:37,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-04-13 18:47:37,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=3348, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 18:47:37,435 INFO L87 Difference]: Start difference. First operand 5124 states and 15261 transitions. Second operand has 62 states, 61 states have (on average 1.459016393442623) internal successors, (89), 61 states have internal predecessors, (89), 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 18:47:47,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:47:47,756 INFO L93 Difference]: Finished difference Result 5840 states and 17010 transitions. [2025-04-13 18:47:47,756 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2025-04-13 18:47:47,756 INFO L79 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.459016393442623) internal successors, (89), 61 states have internal predecessors, (89), 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 31 [2025-04-13 18:47:47,757 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:47:47,769 INFO L225 Difference]: With dead ends: 5840 [2025-04-13 18:47:47,769 INFO L226 Difference]: Without dead ends: 5767 [2025-04-13 18:47:47,770 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5745 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=2159, Invalid=17023, Unknown=0, NotChecked=0, Total=19182 [2025-04-13 18:47:47,770 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 480 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3273 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 3273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:47:47,770 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 0 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 3273 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-04-13 18:47:47,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5767 states. [2025-04-13 18:47:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5767 to 5246. [2025-04-13 18:47:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 5245 states have (on average 2.9746425166825547) internal successors, (15602), 5245 states have internal predecessors, (15602), 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 18:47:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 15602 transitions. [2025-04-13 18:47:49,416 INFO L79 Accepts]: Start accepts. Automaton has 5246 states and 15602 transitions. Word has length 31 [2025-04-13 18:47:49,416 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:47:49,416 INFO L485 AbstractCegarLoop]: Abstraction has 5246 states and 15602 transitions. [2025-04-13 18:47:49,416 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.459016393442623) internal successors, (89), 61 states have internal predecessors, (89), 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 18:47:49,416 INFO L278 IsEmpty]: Start isEmpty. Operand 5246 states and 15602 transitions. [2025-04-13 18:47:49,418 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:47:49,418 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:47:49,418 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:47:49,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2025-04-13 18:47:49,618 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2025-04-13 18:47:49,619 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:47:49,619 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:47:49,619 INFO L85 PathProgramCache]: Analyzing trace with hash 566504037, now seen corresponding path program 48 times [2025-04-13 18:47:49,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:47:49,619 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353657586] [2025-04-13 18:47:49,619 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:47:49,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:47:49,623 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 3 equivalence classes. [2025-04-13 18:47:49,630 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:47:49,630 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:47:49,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:47:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:47:50,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:47:50,624 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353657586] [2025-04-13 18:47:50,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353657586] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:47:50,624 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848293018] [2025-04-13 18:47:50,624 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:47:50,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:47:50,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:47:50,626 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:47:50,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2025-04-13 18:47:50,694 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 3 equivalence classes. [2025-04-13 18:47:50,720 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:47:50,720 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:47:50,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:47:50,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-04-13 18:47:50,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:47:51,578 INFO L325 Elim1Store]: treesize reduction 100, result has 6.5 percent of original size [2025-04-13 18:47:51,578 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 73 treesize of output 27 [2025-04-13 18:47:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:47:51,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:47:52,532 INFO L325 Elim1Store]: treesize reduction 85, result has 45.9 percent of original size [2025-04-13 18:47:52,532 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 97 treesize of output 100 [2025-04-13 18:47:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:47:53,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848293018] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:47:53,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:47:53,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 61 [2025-04-13 18:47:53,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793493067] [2025-04-13 18:47:53,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:47:53,131 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-04-13 18:47:53,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:47:53,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-04-13 18:47:53,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=3509, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 18:47:53,132 INFO L87 Difference]: Start difference. First operand 5246 states and 15602 transitions. Second operand has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 18:48:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:48:18,507 INFO L93 Difference]: Finished difference Result 6717 states and 19137 transitions. [2025-04-13 18:48:18,508 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2025-04-13 18:48:18,508 INFO L79 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 31 [2025-04-13 18:48:18,508 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:48:18,522 INFO L225 Difference]: With dead ends: 6717 [2025-04-13 18:48:18,522 INFO L226 Difference]: Without dead ends: 6623 [2025-04-13 18:48:18,524 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10372 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=4279, Invalid=33163, Unknown=0, NotChecked=0, Total=37442 [2025-04-13 18:48:18,524 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1128 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6487 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 6487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:48:18,524 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 0 Invalid, 7208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 6487 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-04-13 18:48:18,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6623 states. [2025-04-13 18:48:20,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6623 to 5582. [2025-04-13 18:48:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5582 states, 5581 states have (on average 2.963984948933883) internal successors, (16542), 5581 states have internal predecessors, (16542), 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 18:48:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 16542 transitions. [2025-04-13 18:48:20,497 INFO L79 Accepts]: Start accepts. Automaton has 5582 states and 16542 transitions. Word has length 31 [2025-04-13 18:48:20,497 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:48:20,497 INFO L485 AbstractCegarLoop]: Abstraction has 5582 states and 16542 transitions. [2025-04-13 18:48:20,497 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 18:48:20,497 INFO L278 IsEmpty]: Start isEmpty. Operand 5582 states and 16542 transitions. [2025-04-13 18:48:20,499 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:48:20,499 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:48:20,499 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:48:20,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2025-04-13 18:48:20,700 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2025-04-13 18:48:20,700 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:48:20,700 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:48:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash 130625397, now seen corresponding path program 49 times [2025-04-13 18:48:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:48:20,700 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93665095] [2025-04-13 18:48:20,700 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:48:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:48:20,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 18:48:20,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:48:20,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:48:20,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:48:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:48:21,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:48:21,503 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93665095] [2025-04-13 18:48:21,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93665095] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:48:21,503 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130603965] [2025-04-13 18:48:21,503 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:48:21,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:48:21,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:48:21,505 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:48:21,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2025-04-13 18:48:21,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 18:48:21,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:48:21,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:48:21,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:48:21,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-04-13 18:48:21,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:48:22,418 INFO L325 Elim1Store]: treesize reduction 62, result has 10.1 percent of original size [2025-04-13 18:48:22,418 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 24 [2025-04-13 18:48:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:48:22,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:48:23,150 INFO L325 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2025-04-13 18:48:23,150 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 106 [2025-04-13 18:48:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:48:23,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130603965] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:48:23,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:48:23,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 61 [2025-04-13 18:48:23,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991039342] [2025-04-13 18:48:23,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:48:23,691 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-04-13 18:48:23,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:48:23,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-04-13 18:48:23,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=3455, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 18:48:23,692 INFO L87 Difference]: Start difference. First operand 5582 states and 16542 transitions. Second operand has 63 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 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 18:48:28,541 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-13 18:48:47,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:48:47,267 INFO L93 Difference]: Finished difference Result 11633 states and 33397 transitions. [2025-04-13 18:48:47,267 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2025-04-13 18:48:47,267 INFO L79 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 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 31 [2025-04-13 18:48:47,267 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:48:47,291 INFO L225 Difference]: With dead ends: 11633 [2025-04-13 18:48:47,291 INFO L226 Difference]: Without dead ends: 11542 [2025-04-13 18:48:47,295 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11048 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=4833, Invalid=32997, Unknown=0, NotChecked=0, Total=37830 [2025-04-13 18:48:47,295 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 847 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 456 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 4420 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:48:47,295 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 0 Invalid, 4878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 4420 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2025-04-13 18:48:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11542 states. [2025-04-13 18:48:50,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11542 to 8706. [2025-04-13 18:48:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8706 states, 8705 states have (on average 3.0184951177484205) internal successors, (26276), 8705 states have internal predecessors, (26276), 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 18:48:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8706 states to 8706 states and 26276 transitions. [2025-04-13 18:48:50,431 INFO L79 Accepts]: Start accepts. Automaton has 8706 states and 26276 transitions. Word has length 31 [2025-04-13 18:48:50,431 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:48:50,431 INFO L485 AbstractCegarLoop]: Abstraction has 8706 states and 26276 transitions. [2025-04-13 18:48:50,431 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 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 18:48:50,431 INFO L278 IsEmpty]: Start isEmpty. Operand 8706 states and 26276 transitions. [2025-04-13 18:48:50,435 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:48:50,435 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:48:50,435 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:48:50,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2025-04-13 18:48:50,635 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:48:50,636 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:48:50,636 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:48:50,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1056345381, now seen corresponding path program 50 times [2025-04-13 18:48:50,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:48:50,636 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489646187] [2025-04-13 18:48:50,636 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:48:50,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:48:50,640 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-04-13 18:48:50,646 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:48:50,646 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:48:50,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:48:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:48:51,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:48:51,409 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489646187] [2025-04-13 18:48:51,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489646187] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:48:51,409 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407544077] [2025-04-13 18:48:51,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:48:51,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:48:51,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:48:51,411 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:48:51,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2025-04-13 18:48:51,480 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-04-13 18:48:51,496 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:48:51,496 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:48:51,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:48:51,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-04-13 18:48:51,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:48:52,378 INFO L325 Elim1Store]: treesize reduction 54, result has 50.5 percent of original size [2025-04-13 18:48:52,378 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 72 [2025-04-13 18:48:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:48:52,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:48:53,386 INFO L325 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2025-04-13 18:48:53,387 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 106 [2025-04-13 18:48:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:48:54,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407544077] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:48:54,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:48:54,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 61 [2025-04-13 18:48:54,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042104944] [2025-04-13 18:48:54,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:48:54,029 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-04-13 18:48:54,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:48:54,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-04-13 18:48:54,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=3556, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 18:48:54,030 INFO L87 Difference]: Start difference. First operand 8706 states and 26276 transitions. Second operand has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 18:49:29,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:49:29,164 INFO L93 Difference]: Finished difference Result 14414 states and 42749 transitions. [2025-04-13 18:49:29,165 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2025-04-13 18:49:29,165 INFO L79 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 31 [2025-04-13 18:49:29,165 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:49:29,198 INFO L225 Difference]: With dead ends: 14414 [2025-04-13 18:49:29,198 INFO L226 Difference]: Without dead ends: 14286 [2025-04-13 18:49:29,202 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12017 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=5676, Invalid=36144, Unknown=0, NotChecked=0, Total=41820 [2025-04-13 18:49:29,202 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 955 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5952 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 5952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:49:29,202 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 0 Invalid, 6649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 5952 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-04-13 18:49:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14286 states. [2025-04-13 18:49:33,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14286 to 9034. [2025-04-13 18:49:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9034 states, 9033 states have (on average 3.017823535923835) internal successors, (27260), 9033 states have internal predecessors, (27260), 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 18:49:33,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9034 states to 9034 states and 27260 transitions. [2025-04-13 18:49:33,097 INFO L79 Accepts]: Start accepts. Automaton has 9034 states and 27260 transitions. Word has length 31 [2025-04-13 18:49:33,098 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:49:33,098 INFO L485 AbstractCegarLoop]: Abstraction has 9034 states and 27260 transitions. [2025-04-13 18:49:33,098 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 18:49:33,098 INFO L278 IsEmpty]: Start isEmpty. Operand 9034 states and 27260 transitions. [2025-04-13 18:49:33,102 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:49:33,102 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:49:33,102 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:49:33,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2025-04-13 18:49:33,302 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:49:33,302 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:49:33,303 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:49:33,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1129010101, now seen corresponding path program 51 times [2025-04-13 18:49:33,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:49:33,303 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574294222] [2025-04-13 18:49:33,303 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:49:33,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:49:33,308 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-04-13 18:49:33,315 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:49:33,316 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:49:33,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:49:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:49:34,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:49:34,100 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574294222] [2025-04-13 18:49:34,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574294222] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:49:34,100 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431669988] [2025-04-13 18:49:34,100 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:49:34,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:49:34,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:49:34,102 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:49:34,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2025-04-13 18:49:34,174 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 4 equivalence classes. [2025-04-13 18:49:34,207 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:49:34,207 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:49:34,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:49:34,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-04-13 18:49:34,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:49:34,861 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:49:34,861 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 10 [2025-04-13 18:49:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:49:34,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:49:35,541 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:49:35,542 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 106 [2025-04-13 18:49:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:49:35,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431669988] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:49:35,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:49:35,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 59 [2025-04-13 18:49:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475122166] [2025-04-13 18:49:35,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:49:35,921 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2025-04-13 18:49:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:49:35,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2025-04-13 18:49:35,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=3171, Unknown=0, NotChecked=0, Total=3660 [2025-04-13 18:49:35,922 INFO L87 Difference]: Start difference. First operand 9034 states and 27260 transitions. Second operand has 61 states, 60 states have (on average 1.4166666666666667) internal successors, (85), 60 states have internal predecessors, (85), 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 18:50:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:16,929 INFO L93 Difference]: Finished difference Result 32985 states and 97237 transitions. [2025-04-13 18:50:16,929 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2025-04-13 18:50:16,929 INFO L79 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.4166666666666667) internal successors, (85), 60 states have internal predecessors, (85), 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 31 [2025-04-13 18:50:16,929 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:17,000 INFO L225 Difference]: With dead ends: 32985 [2025-04-13 18:50:17,001 INFO L226 Difference]: Without dead ends: 24154 [2025-04-13 18:50:17,018 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32852 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=10897, Invalid=81823, Unknown=0, NotChecked=0, Total=92720 [2025-04-13 18:50:17,019 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 904 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11913 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 11913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:17,019 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 0 Invalid, 12567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 11913 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2025-04-13 18:50:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24154 states. [2025-04-13 18:50:23,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24154 to 14542. [2025-04-13 18:50:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14542 states, 14541 states have (on average 3.0121037067601955) internal successors, (43799), 14541 states have internal predecessors, (43799), 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 18:50:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14542 states to 14542 states and 43799 transitions. [2025-04-13 18:50:23,775 INFO L79 Accepts]: Start accepts. Automaton has 14542 states and 43799 transitions. Word has length 31 [2025-04-13 18:50:23,775 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:50:23,775 INFO L485 AbstractCegarLoop]: Abstraction has 14542 states and 43799 transitions. [2025-04-13 18:50:23,775 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.4166666666666667) internal successors, (85), 60 states have internal predecessors, (85), 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 18:50:23,775 INFO L278 IsEmpty]: Start isEmpty. Operand 14542 states and 43799 transitions. [2025-04-13 18:50:23,781 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:50:23,781 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:50:23,781 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:50:23,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2025-04-13 18:50:23,981 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:23,981 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:50:23,982 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:50:23,982 INFO L85 PathProgramCache]: Analyzing trace with hash -16432953, now seen corresponding path program 52 times [2025-04-13 18:50:23,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:50:23,982 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308879857] [2025-04-13 18:50:23,982 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:50:23,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:50:23,987 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-04-13 18:50:23,992 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:50:23,992 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:50:23,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:50:24,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:50:24,730 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308879857] [2025-04-13 18:50:24,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308879857] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:50:24,730 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184122783] [2025-04-13 18:50:24,731 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:50:24,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:50:24,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:50:24,732 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:50:24,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2025-04-13 18:50:24,804 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-04-13 18:50:24,821 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:50:24,821 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:50:24,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:50:24,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-04-13 18:50:24,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:50:25,706 INFO L325 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2025-04-13 18:50:25,706 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 24 [2025-04-13 18:50:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:50:25,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:50:26,384 INFO L325 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2025-04-13 18:50:26,385 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 106 [2025-04-13 18:50:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:50:26,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184122783] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:50:26,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:50:26,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 61 [2025-04-13 18:50:26,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020276888] [2025-04-13 18:50:26,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:50:26,951 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-04-13 18:50:26,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:50:26,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-04-13 18:50:26,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=3568, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 18:50:26,953 INFO L87 Difference]: Start difference. First operand 14542 states and 43799 transitions. Second operand has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 18:51:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:51:01,877 INFO L93 Difference]: Finished difference Result 17765 states and 52639 transitions. [2025-04-13 18:51:01,878 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2025-04-13 18:51:01,878 INFO L79 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 31 [2025-04-13 18:51:01,878 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:51:01,934 INFO L225 Difference]: With dead ends: 17765 [2025-04-13 18:51:01,934 INFO L226 Difference]: Without dead ends: 17611 [2025-04-13 18:51:01,942 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26237 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=5665, Invalid=64825, Unknown=0, NotChecked=0, Total=70490 [2025-04-13 18:51:01,942 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1309 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8290 mSolverCounterSat, 823 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 8290 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:51:01,942 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 0 Invalid, 9115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 8290 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2025-04-13 18:51:01,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17611 states. [2025-04-13 18:51:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17611 to 14738. [2025-04-13 18:51:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14738 states, 14737 states have (on average 3.0220533351428376) internal successors, (44536), 14737 states have internal predecessors, (44536), 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 18:51:08,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14738 states to 14738 states and 44536 transitions. [2025-04-13 18:51:08,655 INFO L79 Accepts]: Start accepts. Automaton has 14738 states and 44536 transitions. Word has length 31 [2025-04-13 18:51:08,655 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:51:08,655 INFO L485 AbstractCegarLoop]: Abstraction has 14738 states and 44536 transitions. [2025-04-13 18:51:08,655 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 18:51:08,655 INFO L278 IsEmpty]: Start isEmpty. Operand 14738 states and 44536 transitions. [2025-04-13 18:51:08,660 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:51:08,660 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:51:08,660 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:51:08,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2025-04-13 18:51:08,860 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2025-04-13 18:51:08,861 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:51:08,861 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:51:08,861 INFO L85 PathProgramCache]: Analyzing trace with hash 463791191, now seen corresponding path program 53 times [2025-04-13 18:51:08,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:51:08,861 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685996684] [2025-04-13 18:51:08,861 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:51:08,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:51:08,865 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 3 equivalence classes. [2025-04-13 18:51:08,871 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:51:08,871 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:51:08,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:51:09,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:51:09,626 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685996684] [2025-04-13 18:51:09,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685996684] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:51:09,626 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934375801] [2025-04-13 18:51:09,626 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:51:09,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:09,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:51:09,628 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:51:09,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2025-04-13 18:51:09,701 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 3 equivalence classes. [2025-04-13 18:51:09,719 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:51:09,719 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:51:09,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:09,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-04-13 18:51:09,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:51:10,551 INFO L325 Elim1Store]: treesize reduction 62, result has 10.1 percent of original size [2025-04-13 18:51:10,552 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 24 [2025-04-13 18:51:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:51:10,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:51:11,165 INFO L325 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2025-04-13 18:51:11,165 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 84 treesize of output 109 [2025-04-13 18:51:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:51:11,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934375801] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:51:11,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:51:11,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 59 [2025-04-13 18:51:11,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835519299] [2025-04-13 18:51:11,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:51:11,627 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2025-04-13 18:51:11,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:51:11,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2025-04-13 18:51:11,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=3237, Unknown=0, NotChecked=0, Total=3660 [2025-04-13 18:51:11,628 INFO L87 Difference]: Start difference. First operand 14738 states and 44536 transitions. Second operand has 61 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 60 states have internal predecessors, (88), 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 18:51:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:51:50,579 INFO L93 Difference]: Finished difference Result 33974 states and 99629 transitions. [2025-04-13 18:51:50,579 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2025-04-13 18:51:50,579 INFO L79 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 60 states have internal predecessors, (88), 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 31 [2025-04-13 18:51:50,579 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:51:50,673 INFO L225 Difference]: With dead ends: 33974 [2025-04-13 18:51:50,673 INFO L226 Difference]: Without dead ends: 33747 [2025-04-13 18:51:50,683 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13540 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=5886, Invalid=32726, Unknown=0, NotChecked=0, Total=38612 [2025-04-13 18:51:50,683 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 998 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4918 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 4918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:51:50,684 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 0 Invalid, 5493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 4918 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-04-13 18:51:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33747 states. [2025-04-13 18:52:02,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33747 to 25884. [2025-04-13 18:52:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25884 states, 25883 states have (on average 3.076111733570297) internal successors, (79619), 25883 states have internal predecessors, (79619), 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 18:52:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25884 states to 25884 states and 79619 transitions. [2025-04-13 18:52:02,438 INFO L79 Accepts]: Start accepts. Automaton has 25884 states and 79619 transitions. Word has length 31 [2025-04-13 18:52:02,438 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:52:02,438 INFO L485 AbstractCegarLoop]: Abstraction has 25884 states and 79619 transitions. [2025-04-13 18:52:02,438 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 60 states have internal predecessors, (88), 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 18:52:02,438 INFO L278 IsEmpty]: Start isEmpty. Operand 25884 states and 79619 transitions. [2025-04-13 18:52:02,446 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:52:02,446 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:52:02,446 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:52:02,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2025-04-13 18:52:02,646 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2025-04-13 18:52:02,647 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:52:02,647 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:52:02,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1725303929, now seen corresponding path program 54 times [2025-04-13 18:52:02,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:52:02,647 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411662761] [2025-04-13 18:52:02,647 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:52:02,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:52:02,652 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 3 equivalence classes. [2025-04-13 18:52:02,659 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:52:02,659 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:52:02,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:52:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:52:03,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:52:03,546 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411662761] [2025-04-13 18:52:03,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411662761] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:52:03,546 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937744353] [2025-04-13 18:52:03,546 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:52:03,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:52:03,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:52:03,548 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:52:03,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2025-04-13 18:52:03,623 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 3 equivalence classes. [2025-04-13 18:52:03,640 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:52:03,640 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:52:03,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:52:03,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-04-13 18:52:03,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:52:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:52:04,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:52:05,105 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:52:05,106 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 109 [2025-04-13 18:52:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:52:05,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937744353] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:52:05,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:52:05,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 61 [2025-04-13 18:52:05,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321062728] [2025-04-13 18:52:05,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:52:05,517 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-04-13 18:52:05,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:52:05,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-04-13 18:52:05,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3516, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 18:52:05,518 INFO L87 Difference]: Start difference. First operand 25884 states and 79619 transitions. Second operand has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 18:53:20,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:53:20,466 INFO L93 Difference]: Finished difference Result 58617 states and 177848 transitions. [2025-04-13 18:53:20,467 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2025-04-13 18:53:20,467 INFO L79 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 31 [2025-04-13 18:53:20,467 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:53:20,644 INFO L225 Difference]: With dead ends: 58617 [2025-04-13 18:53:20,644 INFO L226 Difference]: Without dead ends: 54563 [2025-04-13 18:53:20,667 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18412 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=9497, Invalid=52255, Unknown=0, NotChecked=0, Total=61752 [2025-04-13 18:53:20,668 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 976 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9315 mSolverCounterSat, 812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 812 IncrementalHoareTripleChecker+Valid, 9315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:53:20,668 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 0 Invalid, 10127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [812 Valid, 9315 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-04-13 18:53:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54563 states. [2025-04-13 18:53:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54563 to 47842. [2025-04-13 18:53:41,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47842 states, 47841 states have (on average 3.0867874835392235) internal successors, (147675), 47841 states have internal predecessors, (147675), 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 18:53:41,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47842 states to 47842 states and 147675 transitions. [2025-04-13 18:53:41,807 INFO L79 Accepts]: Start accepts. Automaton has 47842 states and 147675 transitions. Word has length 31 [2025-04-13 18:53:41,807 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:53:41,807 INFO L485 AbstractCegarLoop]: Abstraction has 47842 states and 147675 transitions. [2025-04-13 18:53:41,807 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 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 18:53:41,807 INFO L278 IsEmpty]: Start isEmpty. Operand 47842 states and 147675 transitions. [2025-04-13 18:53:41,819 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:53:41,819 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:53:41,819 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:53:41,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2025-04-13 18:53:42,019 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:53:42,020 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:53:42,020 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:53:42,020 INFO L85 PathProgramCache]: Analyzing trace with hash -596986899, now seen corresponding path program 55 times [2025-04-13 18:53:42,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:53:42,020 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433222440] [2025-04-13 18:53:42,020 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:53:42,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:53:42,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 18:53:42,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:53:42,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:53:42,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:53:43,106 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:53:43,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:53:43,106 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433222440] [2025-04-13 18:53:43,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433222440] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:53:43,106 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100573880] [2025-04-13 18:53:43,106 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:53:43,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:53:43,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:53:43,108 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:53:43,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2025-04-13 18:53:43,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-13 18:53:43,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:53:43,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:53:43,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:53:43,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-04-13 18:53:43,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:53:44,107 INFO L325 Elim1Store]: treesize reduction 62, result has 10.1 percent of original size [2025-04-13 18:53:44,108 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 24 [2025-04-13 18:53:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:53:44,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:53:44,875 INFO L325 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2025-04-13 18:53:44,875 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 106 [2025-04-13 18:53:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:53:45,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100573880] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:53:45,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:53:45,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 61 [2025-04-13 18:53:45,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713527926] [2025-04-13 18:53:45,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:53:45,438 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-04-13 18:53:45,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:53:45,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-04-13 18:53:45,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=3495, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 18:53:45,439 INFO L87 Difference]: Start difference. First operand 47842 states and 147675 transitions. Second operand has 63 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 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 18:54:32,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:54:32,078 INFO L93 Difference]: Finished difference Result 53607 states and 164206 transitions. [2025-04-13 18:54:32,079 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2025-04-13 18:54:32,079 INFO L79 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 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 31 [2025-04-13 18:54:32,079 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:54:32,262 INFO L225 Difference]: With dead ends: 53607 [2025-04-13 18:54:32,262 INFO L226 Difference]: Without dead ends: 53458 [2025-04-13 18:54:32,279 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9717 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=4378, Invalid=29294, Unknown=0, NotChecked=0, Total=33672 [2025-04-13 18:54:32,279 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 747 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4231 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 4231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:54:32,280 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 0 Invalid, 4656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 4231 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-04-13 18:54:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53458 states. [2025-04-13 18:54:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53458 to 49964. [2025-04-13 18:54:54,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49964 states, 49963 states have (on average 3.092008085983628) internal successors, (154486), 49963 states have internal predecessors, (154486), 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 18:54:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49964 states to 49964 states and 154486 transitions. [2025-04-13 18:54:54,899 INFO L79 Accepts]: Start accepts. Automaton has 49964 states and 154486 transitions. Word has length 31 [2025-04-13 18:54:54,900 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:54:54,900 INFO L485 AbstractCegarLoop]: Abstraction has 49964 states and 154486 transitions. [2025-04-13 18:54:54,900 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 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 18:54:54,900 INFO L278 IsEmpty]: Start isEmpty. Operand 49964 states and 154486 transitions. [2025-04-13 18:54:54,911 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-13 18:54:54,911 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:54:54,911 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:54:54,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2025-04-13 18:54:55,111 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:54:55,112 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:54:55,112 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:54:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1508885277, now seen corresponding path program 56 times [2025-04-13 18:54:55,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:54:55,112 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832793592] [2025-04-13 18:54:55,112 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:54:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:54:55,117 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-04-13 18:54:55,123 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:54:55,123 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:54:55,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:54:55,857 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:54:55,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:54:55,857 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832793592] [2025-04-13 18:54:55,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832793592] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:54:55,857 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703567541] [2025-04-13 18:54:55,857 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:54:55,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:54:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:54:55,859 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:54:55,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2025-04-13 18:54:55,935 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-04-13 18:54:55,951 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-04-13 18:54:55,951 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:54:55,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:54:55,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-04-13 18:54:55,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:54:56,958 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 18:54:56,959 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 18:54:56,959 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 18:54:56,960 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-13 18:54:56,960 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 18:54:56,961 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-13 18:54:56,964 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:54:56,964 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 24 [2025-04-13 18:54:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:54:57,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:54:57,669 INFO L325 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2025-04-13 18:54:57,669 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 106 [2025-04-13 18:54:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:54:58,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703567541] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:54:58,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:54:58,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 59 [2025-04-13 18:54:58,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651541914] [2025-04-13 18:54:58,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:54:58,204 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2025-04-13 18:54:58,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:54:58,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2025-04-13 18:54:58,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=3263, Unknown=0, NotChecked=0, Total=3660 [2025-04-13 18:54:58,205 INFO L87 Difference]: Start difference. First operand 49964 states and 154486 transitions. Second operand has 61 states, 60 states have (on average 1.45) internal successors, (87), 60 states have internal predecessors, (87), 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 18:55:40,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:55:40,506 INFO L93 Difference]: Finished difference Result 53462 states and 163714 transitions. [2025-04-13 18:55:40,506 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2025-04-13 18:55:40,507 INFO L79 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.45) internal successors, (87), 60 states have internal predecessors, (87), 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 31 [2025-04-13 18:55:40,507 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:55:40,689 INFO L225 Difference]: With dead ends: 53462 [2025-04-13 18:55:40,689 INFO L226 Difference]: Without dead ends: 53384 [2025-04-13 18:55:40,705 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4321 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1994, Invalid=15562, Unknown=0, NotChecked=0, Total=17556 [2025-04-13 18:55:40,706 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 388 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4716 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 4716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:55:40,706 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 0 Invalid, 4926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 4716 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-04-13 18:55:40,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53384 states. Received shutdown request... [2025-04-13 18:56:02,778 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:56:02,778 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:56:03,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53384 to 50016. [2025-04-13 18:56:03,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50016 states, 50015 states have (on average 3.091512546236129) internal successors, (154622), 50015 states have internal predecessors, (154622), 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 18:56:03,621 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 18:56:03,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2025-04-13 18:56:03,822 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2025-04-13 18:56:03,822 WARN L610 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2025-04-13 18:56:03,824 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 18:56:03,824 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 18:56:03,829 INFO L422 BasicCegarLoop]: Path program histogram: [56, 6, 2, 1, 1, 1, 1] [2025-04-13 18:56:03,831 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 18:56:03,831 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 18:56:03,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 06:56:03 BasicIcfg [2025-04-13 18:56:03,833 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 18:56:03,834 INFO L158 Benchmark]: Toolchain (without parser) took 832128.96ms. Allocated memory was 142.6MB in the beginning and 3.0GB in the end (delta: 2.9GB). Free memory was 100.8MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2025-04-13 18:56:03,834 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:56:03,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.12ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 85.2MB in the end (delta: 14.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 18:56:03,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.47ms. Allocated memory is still 142.6MB. Free memory was 85.2MB in the beginning and 82.9MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 18:56:03,834 INFO L158 Benchmark]: Boogie Preprocessor took 51.04ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 81.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:56:03,834 INFO L158 Benchmark]: RCFGBuilder took 523.35ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 31.7MB in the end (delta: 49.4MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2025-04-13 18:56:03,834 INFO L158 Benchmark]: TraceAbstraction took 831268.11ms. Allocated memory was 142.6MB in the beginning and 3.0GB in the end (delta: 2.9GB). Free memory was 30.9MB in the beginning and 1.8GB in the end (delta: -1.8GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2025-04-13 18:56:03,835 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 251.12ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 85.2MB in the end (delta: 14.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.47ms. Allocated memory is still 142.6MB. Free memory was 85.2MB in the beginning and 82.9MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.04ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 81.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 523.35ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 31.7MB in the end (delta: 49.4MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. * TraceAbstraction took 831268.11ms. Allocated memory was 142.6MB in the beginning and 3.0GB in the end (delta: 2.9GB). Free memory was 30.9MB in the beginning and 1.8GB in the end (delta: -1.8GB). Peak memory consumption was 2.5GB. 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 - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 33 locations, 41 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 831.2s, OverallIterations: 68, TraceHistogramMax: 5, PathProgramHistogramMax: 56, EmptinessCheckTime: 0.2s, AutomataDifference: 601.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 24431 SdHoareTripleChecker+Valid, 96.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24431 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 85.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13563 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 196699 IncrementalHoareTripleChecker+Invalid, 210268 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13563 mSolverCounterUnsat, 0 mSDtfsCounter, 196699 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8323 GetRequests, 1680 SyntacticMatches, 5 SemanticMatches, 6638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318418 ImplicationChecksByTransitivity, 323.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49964occurred in iteration=67, InterpolantAutomatonStates: 5031, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 120.0s AutomataMinimizationTime, 68 MinimizatonAttempts, 69275 StatesRemovedByMinimization, 64 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 90.8s InterpolantComputationTime, 3421 NumberOfCodeBlocks, 3403 NumberOfCodeBlocksAsserted, 284 NumberOfCheckSat, 4887 ConstructedInterpolants, 172 QuantifiedInterpolants, 98414 SizeOfPredicates, 770 NumberOfNonLiveVariables, 11993 ConjunctsInSsa, 2560 ConjunctsInUnsatCore, 192 InterpolantComputations, 7 PerfectInterpolantSequences, 455/2554 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 could not prove your program: Timeout Completed graceful shutdown