/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/weaver/unroll-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 23:24:00,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 23:24:00,341 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 23:24:00,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 23:24:00,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 23:24:00,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 23:24:00,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 23:24:00,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 23:24:00,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 23:24:00,374 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 23:24:00,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 23:24:00,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 23:24:00,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 23:24:00,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 23:24:00,375 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 23:24:00,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 23:24:00,375 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 23:24:00,375 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 23:24:00,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 23:24:00,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 23:24:00,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 23:24:00,375 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 23:24:00,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 23:24:00,375 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 23:24:00,376 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 23:24:00,376 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 23:24:00,376 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 23:24:00,376 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 23:24:00,376 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 23:24:00,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:24:00,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:24:00,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:24:00,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:24:00,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 23:24:00,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 23:24:00,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 23:24:00,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 23:24:00,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:24:00,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 23:24:00,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 23:24:00,377 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 23:24:00,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 23:24:00,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 23:24:00,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 23:24:00,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 23:24:00,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 23:24:00,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 23:24:00,377 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 23:24:00,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 23:24:00,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 23:24:00,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 23:24:00,616 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 23:24:00,617 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 23:24:00,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-3.wvr.c [2025-04-13 23:24:01,980 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a453c4d1/1bcb424ddd6a468484e4eff9cd148c74/FLAG4543d5618 [2025-04-13 23:24:02,204 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 23:24:02,206 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-3.wvr.c [2025-04-13 23:24:02,213 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a453c4d1/1bcb424ddd6a468484e4eff9cd148c74/FLAG4543d5618 [2025-04-13 23:24:02,981 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a453c4d1/1bcb424ddd6a468484e4eff9cd148c74 [2025-04-13 23:24:02,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 23:24:02,984 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 23:24:02,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 23:24:02,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 23:24:02,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 23:24:02,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:24:02" (1/1) ... [2025-04-13 23:24:02,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2569c9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:02, skipping insertion in model container [2025-04-13 23:24:02,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 11:24:02" (1/1) ... [2025-04-13 23:24:03,004 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 23:24:03,213 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/unroll-3.wvr.c[2526,2539] [2025-04-13 23:24:03,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:24:03,240 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 23:24:03,265 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/unroll-3.wvr.c[2526,2539] [2025-04-13 23:24:03,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 23:24:03,281 INFO L204 MainTranslator]: Completed translation [2025-04-13 23:24:03,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03 WrapperNode [2025-04-13 23:24:03,281 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 23:24:03,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 23:24:03,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 23:24:03,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 23:24:03,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (1/1) ... [2025-04-13 23:24:03,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (1/1) ... [2025-04-13 23:24:03,315 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 128 [2025-04-13 23:24:03,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 23:24:03,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 23:24:03,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 23:24:03,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 23:24:03,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (1/1) ... [2025-04-13 23:24:03,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (1/1) ... [2025-04-13 23:24:03,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (1/1) ... [2025-04-13 23:24:03,340 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 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 23:24:03,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (1/1) ... [2025-04-13 23:24:03,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (1/1) ... [2025-04-13 23:24:03,349 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (1/1) ... [2025-04-13 23:24:03,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (1/1) ... [2025-04-13 23:24:03,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (1/1) ... [2025-04-13 23:24:03,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (1/1) ... [2025-04-13 23:24:03,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 23:24:03,355 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 23:24:03,355 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 23:24:03,355 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 23:24:03,355 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (1/1) ... [2025-04-13 23:24:03,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 23:24:03,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:24:03,379 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 23:24:03,382 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 23:24:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 23:24:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 23:24:03,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 23:24:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 23:24:03,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 23:24:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 23:24:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 23:24:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 23:24:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 23:24:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 23:24:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 23:24:03,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 23:24:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 23:24:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 23:24:03,400 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 23:24:03,479 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 23:24:03,481 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 23:24:03,689 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 23:24:03,689 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 23:24:03,690 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 23:24:03,896 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 23:24:03,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:24:03 BoogieIcfgContainer [2025-04-13 23:24:03,897 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 23:24:03,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 23:24:03,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 23:24:03,903 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 23:24:03,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 11:24:02" (1/3) ... [2025-04-13 23:24:03,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ade258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:24:03, skipping insertion in model container [2025-04-13 23:24:03,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 11:24:03" (2/3) ... [2025-04-13 23:24:03,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ade258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 11:24:03, skipping insertion in model container [2025-04-13 23:24:03,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 11:24:03" (3/3) ... [2025-04-13 23:24:03,905 INFO L128 eAbstractionObserver]: Analyzing ICFG unroll-3.wvr.c [2025-04-13 23:24:03,916 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 23:24:03,918 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unroll-3.wvr.c that has 3 procedures, 17 locations, 17 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 23:24:03,918 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 23:24:03,961 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 23:24:04,003 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 19 transitions, 52 flow [2025-04-13 23:24:04,014 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 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 23:24:04,036 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 23:24:04,049 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;@7a105296, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 23:24:04,049 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 23:24:04,051 INFO L278 IsEmpty]: Start isEmpty. Operand has 32 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 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 23:24:04,054 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 23:24:04,055 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:04,055 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:04,056 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 23:24:04,059 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:04,060 INFO L85 PathProgramCache]: Analyzing trace with hash 530434017, now seen corresponding path program 1 times [2025-04-13 23:24:04,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:04,067 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694762262] [2025-04-13 23:24:04,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:24:04,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:04,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 23:24:04,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 23:24:04,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:24:04,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:04,361 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 23:24:04,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:04,363 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694762262] [2025-04-13 23:24:04,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694762262] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:24:04,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:24:04,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 23:24:04,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516954682] [2025-04-13 23:24:04,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:24:04,367 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 23:24:04,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:04,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 23:24:04,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 23:24:04,385 INFO L87 Difference]: Start difference. First operand has 32 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 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) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:04,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:04,441 INFO L93 Difference]: Finished difference Result 63 states and 137 transitions. [2025-04-13 23:24:04,442 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 23:24:04,443 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 23:24:04,443 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:04,451 INFO L225 Difference]: With dead ends: 63 [2025-04-13 23:24:04,452 INFO L226 Difference]: Without dead ends: 33 [2025-04-13 23:24:04,456 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 23:24:04,460 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:04,461 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 23:24:04,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-04-13 23:24:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2025-04-13 23:24:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 2.1875) internal successors, (70), 32 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 70 transitions. [2025-04-13 23:24:04,486 INFO L79 Accepts]: Start accepts. Automaton has 33 states and 70 transitions. Word has length 13 [2025-04-13 23:24:04,486 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:04,486 INFO L485 AbstractCegarLoop]: Abstraction has 33 states and 70 transitions. [2025-04-13 23:24:04,486 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:04,486 INFO L278 IsEmpty]: Start isEmpty. Operand 33 states and 70 transitions. [2025-04-13 23:24:04,487 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 23:24:04,487 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:04,487 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:04,487 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 23:24:04,487 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 23:24:04,487 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:04,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1908402488, now seen corresponding path program 1 times [2025-04-13 23:24:04,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:04,488 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760403532] [2025-04-13 23:24:04,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:24:04,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:04,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 23:24:04,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 23:24:04,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:24:04,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:04,607 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 23:24:04,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:04,607 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760403532] [2025-04-13 23:24:04,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760403532] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:24:04,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:24:04,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 23:24:04,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955821787] [2025-04-13 23:24:04,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:24:04,608 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 23:24:04,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:04,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 23:24:04,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 23:24:04,609 INFO L87 Difference]: Start difference. First operand 33 states and 70 transitions. Second operand has 3 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 23:24:04,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:04,656 INFO L93 Difference]: Finished difference Result 58 states and 126 transitions. [2025-04-13 23:24:04,657 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 23:24:04,657 INFO L79 Accepts]: Start accepts. Automaton has has 3 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 23:24:04,657 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:04,658 INFO L225 Difference]: With dead ends: 58 [2025-04-13 23:24:04,658 INFO L226 Difference]: Without dead ends: 53 [2025-04-13 23:24:04,659 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 23:24:04,659 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:04,659 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 23:24:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-04-13 23:24:04,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2025-04-13 23:24:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 2.25) internal successors, (117), 52 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:04,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 117 transitions. [2025-04-13 23:24:04,669 INFO L79 Accepts]: Start accepts. Automaton has 53 states and 117 transitions. Word has length 14 [2025-04-13 23:24:04,669 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:04,669 INFO L485 AbstractCegarLoop]: Abstraction has 53 states and 117 transitions. [2025-04-13 23:24:04,669 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 23:24:04,669 INFO L278 IsEmpty]: Start isEmpty. Operand 53 states and 117 transitions. [2025-04-13 23:24:04,671 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 23:24:04,671 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:04,671 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:04,671 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 23:24:04,671 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 23:24:04,671 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:04,671 INFO L85 PathProgramCache]: Analyzing trace with hash -929917962, now seen corresponding path program 1 times [2025-04-13 23:24:04,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:04,671 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449510317] [2025-04-13 23:24:04,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:24:04,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:04,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 23:24:04,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:24:04,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:24:04,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:04,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:04,865 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449510317] [2025-04-13 23:24:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449510317] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:24:04,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:24:04,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 23:24:04,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053765227] [2025-04-13 23:24:04,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:24:04,865 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 23:24:04,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:04,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 23:24:04,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 23:24:04,866 INFO L87 Difference]: Start difference. First operand 53 states and 117 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 23:24:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:05,007 INFO L93 Difference]: Finished difference Result 76 states and 160 transitions. [2025-04-13 23:24:05,007 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 23:24:05,007 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 23:24:05,007 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:05,008 INFO L225 Difference]: With dead ends: 76 [2025-04-13 23:24:05,008 INFO L226 Difference]: Without dead ends: 57 [2025-04-13 23:24:05,008 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-04-13 23:24:05,009 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:05,009 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:24:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-04-13 23:24:05,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2025-04-13 23:24:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:05,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 113 transitions. [2025-04-13 23:24:05,020 INFO L79 Accepts]: Start accepts. Automaton has 50 states and 113 transitions. Word has length 15 [2025-04-13 23:24:05,020 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:05,020 INFO L485 AbstractCegarLoop]: Abstraction has 50 states and 113 transitions. [2025-04-13 23:24:05,020 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 23:24:05,020 INFO L278 IsEmpty]: Start isEmpty. Operand 50 states and 113 transitions. [2025-04-13 23:24:05,021 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 23:24:05,021 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:05,021 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:05,021 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 23:24:05,021 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 23:24:05,021 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:05,021 INFO L85 PathProgramCache]: Analyzing trace with hash 553418305, now seen corresponding path program 1 times [2025-04-13 23:24:05,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:05,022 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886810897] [2025-04-13 23:24:05,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:24:05,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:05,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 23:24:05,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:24:05,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:24:05,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:05,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:05,147 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886810897] [2025-04-13 23:24:05,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886810897] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:24:05,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:24:05,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 23:24:05,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54849924] [2025-04-13 23:24:05,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:24:05,147 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 23:24:05,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:05,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 23:24:05,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 23:24:05,148 INFO L87 Difference]: Start difference. First operand 50 states and 113 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 23:24:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:05,235 INFO L93 Difference]: Finished difference Result 68 states and 141 transitions. [2025-04-13 23:24:05,235 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 23:24:05,235 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 23:24:05,235 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:05,236 INFO L225 Difference]: With dead ends: 68 [2025-04-13 23:24:05,236 INFO L226 Difference]: Without dead ends: 59 [2025-04-13 23:24:05,236 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-04-13 23:24:05,237 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:05,237 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:24:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-04-13 23:24:05,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2025-04-13 23:24:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.3137254901960786) internal successors, (118), 51 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 118 transitions. [2025-04-13 23:24:05,247 INFO L79 Accepts]: Start accepts. Automaton has 52 states and 118 transitions. Word has length 15 [2025-04-13 23:24:05,248 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:05,248 INFO L485 AbstractCegarLoop]: Abstraction has 52 states and 118 transitions. [2025-04-13 23:24:05,248 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 23:24:05,248 INFO L278 IsEmpty]: Start isEmpty. Operand 52 states and 118 transitions. [2025-04-13 23:24:05,248 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 23:24:05,248 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:05,248 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:05,248 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 23:24:05,248 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 23:24:05,249 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:05,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1214966881, now seen corresponding path program 2 times [2025-04-13 23:24:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:05,249 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503450335] [2025-04-13 23:24:05,249 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:24:05,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:05,260 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 23:24:05,281 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:24:05,281 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:24:05,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:05,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:05,526 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503450335] [2025-04-13 23:24:05,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503450335] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:24:05,526 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101172938] [2025-04-13 23:24:05,526 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:24:05,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:05,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:24:05,530 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 23:24:05,531 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 23:24:05,573 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 23:24:05,594 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:24:05,594 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:24:05,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:05,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 23:24:05,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:24:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:05,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:24:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:05,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101172938] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 23:24:05,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 23:24:05,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 11 [2025-04-13 23:24:05,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973799094] [2025-04-13 23:24:05,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:24:05,720 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 23:24:05,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:05,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 23:24:05,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-04-13 23:24:05,720 INFO L87 Difference]: Start difference. First operand 52 states and 118 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 23:24:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:05,781 INFO L93 Difference]: Finished difference Result 64 states and 144 transitions. [2025-04-13 23:24:05,782 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 23:24:05,782 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 23:24:05,784 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:05,784 INFO L225 Difference]: With dead ends: 64 [2025-04-13 23:24:05,784 INFO L226 Difference]: Without dead ends: 57 [2025-04-13 23:24:05,785 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-04-13 23:24:05,785 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 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 23:24:05,785 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 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 23:24:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-04-13 23:24:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2025-04-13 23:24:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.3214285714285716) internal successors, (130), 56 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 130 transitions. [2025-04-13 23:24:05,799 INFO L79 Accepts]: Start accepts. Automaton has 57 states and 130 transitions. Word has length 15 [2025-04-13 23:24:05,799 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:05,799 INFO L485 AbstractCegarLoop]: Abstraction has 57 states and 130 transitions. [2025-04-13 23:24:05,799 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 23:24:05,799 INFO L278 IsEmpty]: Start isEmpty. Operand 57 states and 130 transitions. [2025-04-13 23:24:05,799 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 23:24:05,799 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:05,799 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:05,807 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 23:24:06,000 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:06,000 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 23:24:06,001 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:06,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1775236588, now seen corresponding path program 2 times [2025-04-13 23:24:06,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:06,001 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393481582] [2025-04-13 23:24:06,001 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:24:06,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:06,013 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 23:24:06,025 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:24:06,026 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:24:06,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:06,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:06,106 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393481582] [2025-04-13 23:24:06,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393481582] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:24:06,106 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004862220] [2025-04-13 23:24:06,106 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:24:06,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:06,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:24:06,108 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 23:24:06,110 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 23:24:06,149 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 23:24:06,164 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:24:06,165 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:24:06,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:06,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 23:24:06,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:24:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:06,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:24:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:06,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004862220] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:24:06,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:24:06,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-04-13 23:24:06,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940546174] [2025-04-13 23:24:06,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:24:06,251 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 23:24:06,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:06,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 23:24:06,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-04-13 23:24:06,252 INFO L87 Difference]: Start difference. First operand 57 states and 130 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:06,362 INFO L93 Difference]: Finished difference Result 76 states and 162 transitions. [2025-04-13 23:24:06,363 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 23:24:06,363 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 23:24:06,363 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:06,364 INFO L225 Difference]: With dead ends: 76 [2025-04-13 23:24:06,364 INFO L226 Difference]: Without dead ends: 68 [2025-04-13 23:24:06,364 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-04-13 23:24:06,364 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:06,365 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:24:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-04-13 23:24:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2025-04-13 23:24:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.3214285714285716) internal successors, (130), 56 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 130 transitions. [2025-04-13 23:24:06,374 INFO L79 Accepts]: Start accepts. Automaton has 57 states and 130 transitions. Word has length 15 [2025-04-13 23:24:06,375 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:06,375 INFO L485 AbstractCegarLoop]: Abstraction has 57 states and 130 transitions. [2025-04-13 23:24:06,375 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:06,375 INFO L278 IsEmpty]: Start isEmpty. Operand 57 states and 130 transitions. [2025-04-13 23:24:06,376 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 23:24:06,376 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:06,376 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:06,383 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 23:24:06,576 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,SelfDestructingSolverStorable5 [2025-04-13 23:24:06,577 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 23:24:06,577 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1218552723, now seen corresponding path program 3 times [2025-04-13 23:24:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:06,577 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608215323] [2025-04-13 23:24:06,577 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:24:06,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:06,583 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 23:24:06,597 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:24:06,598 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:24:06,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:06,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:06,842 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608215323] [2025-04-13 23:24:06,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608215323] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:24:06,843 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483094991] [2025-04-13 23:24:06,843 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:24:06,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:06,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:24:06,845 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 23:24:06,845 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 23:24:06,891 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 23:24:06,906 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:24:06,906 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:24:06,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:06,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 23:24:06,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:24:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:06,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:24:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:06,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483094991] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:24:06,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:24:06,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 4] total 12 [2025-04-13 23:24:06,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916864043] [2025-04-13 23:24:06,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:24:06,998 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 23:24:06,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:06,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 23:24:06,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-04-13 23:24:06,999 INFO L87 Difference]: Start difference. First operand 57 states and 130 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:07,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:07,348 INFO L93 Difference]: Finished difference Result 113 states and 262 transitions. [2025-04-13 23:24:07,348 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 23:24:07,348 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 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 23:24:07,348 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:07,349 INFO L225 Difference]: With dead ends: 113 [2025-04-13 23:24:07,349 INFO L226 Difference]: Without dead ends: 95 [2025-04-13 23:24:07,349 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:24:07,350 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:07,350 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:24:07,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-04-13 23:24:07,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 69. [2025-04-13 23:24:07,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.338235294117647) internal successors, (159), 68 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 159 transitions. [2025-04-13 23:24:07,361 INFO L79 Accepts]: Start accepts. Automaton has 69 states and 159 transitions. Word has length 15 [2025-04-13 23:24:07,361 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:07,361 INFO L485 AbstractCegarLoop]: Abstraction has 69 states and 159 transitions. [2025-04-13 23:24:07,361 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:07,361 INFO L278 IsEmpty]: Start isEmpty. Operand 69 states and 159 transitions. [2025-04-13 23:24:07,361 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 23:24:07,361 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:07,361 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:07,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-13 23:24:07,566 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:07,566 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 23:24:07,566 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:07,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2062193162, now seen corresponding path program 3 times [2025-04-13 23:24:07,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:07,567 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91354911] [2025-04-13 23:24:07,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:24:07,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:07,572 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 23:24:07,578 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:24:07,579 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:24:07,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:07,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:07,639 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91354911] [2025-04-13 23:24:07,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91354911] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:24:07,639 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910289933] [2025-04-13 23:24:07,639 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:24:07,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:07,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:24:07,641 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 23:24:07,643 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 23:24:07,685 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 23:24:07,699 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 23:24:07,700 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:24:07,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:07,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 23:24:07,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:24:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:07,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:24:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:07,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910289933] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 23:24:07,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 23:24:07,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2025-04-13 23:24:07,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835693163] [2025-04-13 23:24:07,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:24:07,759 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 23:24:07,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:07,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 23:24:07,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-13 23:24:07,760 INFO L87 Difference]: Start difference. First operand 69 states and 159 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 23:24:07,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:07,832 INFO L93 Difference]: Finished difference Result 82 states and 183 transitions. [2025-04-13 23:24:07,842 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 23:24:07,843 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 23:24:07,843 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:07,843 INFO L225 Difference]: With dead ends: 82 [2025-04-13 23:24:07,844 INFO L226 Difference]: Without dead ends: 74 [2025-04-13 23:24:07,844 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-13 23:24:07,844 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:07,844 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:24:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-04-13 23:24:07,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2025-04-13 23:24:07,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.280701754385965) internal successors, (130), 57 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:07,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 130 transitions. [2025-04-13 23:24:07,862 INFO L79 Accepts]: Start accepts. Automaton has 58 states and 130 transitions. Word has length 15 [2025-04-13 23:24:07,862 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:07,862 INFO L485 AbstractCegarLoop]: Abstraction has 58 states and 130 transitions. [2025-04-13 23:24:07,862 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 23:24:07,862 INFO L278 IsEmpty]: Start isEmpty. Operand 58 states and 130 transitions. [2025-04-13 23:24:07,864 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 23:24:07,864 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:07,864 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:07,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-13 23:24:08,068 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:08,068 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 23:24:08,068 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1433068790, now seen corresponding path program 4 times [2025-04-13 23:24:08,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:08,069 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111810986] [2025-04-13 23:24:08,069 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:24:08,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:08,076 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 23:24:08,081 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 23:24:08,081 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:24:08,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:24:08,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:08,149 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111810986] [2025-04-13 23:24:08,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111810986] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 23:24:08,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 23:24:08,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 23:24:08,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487735089] [2025-04-13 23:24:08,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 23:24:08,149 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 23:24:08,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:08,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 23:24:08,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 23:24:08,150 INFO L87 Difference]: Start difference. First operand 58 states and 130 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 23:24:08,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:08,264 INFO L93 Difference]: Finished difference Result 91 states and 198 transitions. [2025-04-13 23:24:08,264 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 23:24:08,264 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 23:24:08,265 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:08,265 INFO L225 Difference]: With dead ends: 91 [2025-04-13 23:24:08,265 INFO L226 Difference]: Without dead ends: 76 [2025-04-13 23:24:08,265 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-04-13 23:24:08,266 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:08,266 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:24:08,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-04-13 23:24:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2025-04-13 23:24:08,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.343283582089552) internal successors, (157), 67 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:08,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 157 transitions. [2025-04-13 23:24:08,284 INFO L79 Accepts]: Start accepts. Automaton has 68 states and 157 transitions. Word has length 16 [2025-04-13 23:24:08,284 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:08,284 INFO L485 AbstractCegarLoop]: Abstraction has 68 states and 157 transitions. [2025-04-13 23:24:08,284 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 23:24:08,285 INFO L278 IsEmpty]: Start isEmpty. Operand 68 states and 157 transitions. [2025-04-13 23:24:08,285 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 23:24:08,285 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:08,285 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:08,285 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-13 23:24:08,285 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 23:24:08,285 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:08,286 INFO L85 PathProgramCache]: Analyzing trace with hash 187153766, now seen corresponding path program 5 times [2025-04-13 23:24:08,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:08,286 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242626946] [2025-04-13 23:24:08,286 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:24:08,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:08,294 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 23:24:08,303 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 23:24:08,304 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:24:08,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:24:08,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:08,400 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242626946] [2025-04-13 23:24:08,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242626946] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:24:08,400 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980489146] [2025-04-13 23:24:08,400 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:24:08,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:08,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:24:08,402 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 23:24:08,405 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 23:24:08,445 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 23:24:08,464 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 23:24:08,464 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:24:08,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:08,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 23:24:08,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:24:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:24:08,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:24:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:24:08,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980489146] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:24:08,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:24:08,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2025-04-13 23:24:08,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103167102] [2025-04-13 23:24:08,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:24:08,544 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 23:24:08,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:24:08,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 23:24:08,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-04-13 23:24:08,544 INFO L87 Difference]: Start difference. First operand 68 states and 157 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:08,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:24:08,729 INFO L93 Difference]: Finished difference Result 88 states and 198 transitions. [2025-04-13 23:24:08,729 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 23:24:08,729 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 23:24:08,730 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:24:08,730 INFO L225 Difference]: With dead ends: 88 [2025-04-13 23:24:08,730 INFO L226 Difference]: Without dead ends: 81 [2025-04-13 23:24:08,730 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2025-04-13 23:24:08,731 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:24:08,731 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:24:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-04-13 23:24:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 60. [2025-04-13 23:24:08,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.288135593220339) internal successors, (135), 59 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:08,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 135 transitions. [2025-04-13 23:24:08,744 INFO L79 Accepts]: Start accepts. Automaton has 60 states and 135 transitions. Word has length 16 [2025-04-13 23:24:08,744 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:24:08,744 INFO L485 AbstractCegarLoop]: Abstraction has 60 states and 135 transitions. [2025-04-13 23:24:08,744 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:24:08,744 INFO L278 IsEmpty]: Start isEmpty. Operand 60 states and 135 transitions. [2025-04-13 23:24:08,745 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 23:24:08,745 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:24:08,745 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:24:08,752 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 23:24:08,947 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 23:24:08,948 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 23:24:08,948 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:24:08,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1654055702, now seen corresponding path program 1 times [2025-04-13 23:24:08,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:24:08,948 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182604736] [2025-04-13 23:24:08,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:24:08,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:24:08,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 23:24:08,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 23:24:08,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:24:08,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 23:24:09,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:24:09,176 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182604736] [2025-04-13 23:24:09,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182604736] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:24:09,177 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289690698] [2025-04-13 23:24:09,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 23:24:09,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:24:09,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:24:09,179 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 23:24:09,180 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 23:24:09,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 23:24:09,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 23:24:09,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:24:09,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:24:09,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 23:24:09,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:24:09,298 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 23:24:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 23:24:09,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:24:09,756 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 185 treesize of output 163 [2025-04-13 23:24:09,931 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:24:09,932 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 869 treesize of output 661 [2025-04-13 23:24:42,682 WARN L656 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-04-13 23:26:22,362 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 23:26:22,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289690698] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:22,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:22,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2025-04-13 23:26:22,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640226886] [2025-04-13 23:26:22,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:22,363 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 23:26:22,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:22,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 23:26:22,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:26:22,363 INFO L87 Difference]: Start difference. First operand 60 states and 135 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 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 23:26:23,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:23,501 INFO L93 Difference]: Finished difference Result 222 states and 516 transitions. [2025-04-13 23:26:23,502 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 23:26:23,502 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 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 17 [2025-04-13 23:26:23,502 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:23,503 INFO L225 Difference]: With dead ends: 222 [2025-04-13 23:26:23,503 INFO L226 Difference]: Without dead ends: 132 [2025-04-13 23:26:23,504 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=308, Invalid=1024, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 23:26:23,504 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 218 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:23,504 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 0 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:26:23,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-04-13 23:26:23,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 96. [2025-04-13 23:26:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.4842105263157896) internal successors, (236), 95 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 236 transitions. [2025-04-13 23:26:23,520 INFO L79 Accepts]: Start accepts. Automaton has 96 states and 236 transitions. Word has length 17 [2025-04-13 23:26:23,521 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:23,521 INFO L485 AbstractCegarLoop]: Abstraction has 96 states and 236 transitions. [2025-04-13 23:26:23,521 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 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 23:26:23,521 INFO L278 IsEmpty]: Start isEmpty. Operand 96 states and 236 transitions. [2025-04-13 23:26:23,521 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 23:26:23,521 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:23,521 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:23,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-13 23:26:23,722 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 23:26:23,722 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 23:26:23,722 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1010565784, now seen corresponding path program 2 times [2025-04-13 23:26:23,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:23,723 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032834788] [2025-04-13 23:26:23,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:26:23,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:23,730 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 23:26:23,760 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 23:26:23,760 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:26:23,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:24,840 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 23:26:24,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:24,840 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032834788] [2025-04-13 23:26:24,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032834788] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:24,840 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578924426] [2025-04-13 23:26:24,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:26:24,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:24,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:24,842 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 23:26:24,844 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 23:26:24,878 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 23:26:24,894 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 23:26:24,894 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:26:24,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:24,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-13 23:26:24,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:25,023 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:26:25,023 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2025-04-13 23:26:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:26:25,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:25,187 INFO L325 Elim1Store]: treesize reduction 15, result has 90.2 percent of original size [2025-04-13 23:26:25,187 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 10 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 173 [2025-04-13 23:26:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:25,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578924426] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:25,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:25,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 4] total 17 [2025-04-13 23:26:25,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466479367] [2025-04-13 23:26:25,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:25,344 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:26:25,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:25,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:26:25,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:26:25,344 INFO L87 Difference]: Start difference. First operand 96 states and 236 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 23:26:25,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:25,934 INFO L93 Difference]: Finished difference Result 257 states and 613 transitions. [2025-04-13 23:26:25,935 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 23:26:25,935 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 19 [2025-04-13 23:26:25,935 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:25,936 INFO L225 Difference]: With dead ends: 257 [2025-04-13 23:26:25,936 INFO L226 Difference]: Without dead ends: 248 [2025-04-13 23:26:25,937 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2025-04-13 23:26:25,937 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:25,937 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 23:26:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2025-04-13 23:26:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 180. [2025-04-13 23:26:25,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.6815642458100557) internal successors, (480), 179 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 480 transitions. [2025-04-13 23:26:25,974 INFO L79 Accepts]: Start accepts. Automaton has 180 states and 480 transitions. Word has length 19 [2025-04-13 23:26:25,974 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:25,974 INFO L485 AbstractCegarLoop]: Abstraction has 180 states and 480 transitions. [2025-04-13 23:26:25,974 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 23:26:25,974 INFO L278 IsEmpty]: Start isEmpty. Operand 180 states and 480 transitions. [2025-04-13 23:26:25,974 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 23:26:25,974 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:25,975 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:25,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-13 23:26:26,175 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 23:26:26,175 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 23:26:26,176 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:26,176 INFO L85 PathProgramCache]: Analyzing trace with hash 238947288, now seen corresponding path program 3 times [2025-04-13 23:26:26,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:26,176 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606116919] [2025-04-13 23:26:26,176 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:26:26,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:26,180 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-04-13 23:26:26,195 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 23:26:26,195 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:26:26,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:27,114 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 23:26:27,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:27,114 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606116919] [2025-04-13 23:26:27,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606116919] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:27,115 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505734577] [2025-04-13 23:26:27,115 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:26:27,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:27,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:27,117 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 23:26:27,118 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 23:26:27,154 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-04-13 23:26:27,171 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 23:26:27,171 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:26:27,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:27,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-13 23:26:27,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:27,320 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:26:27,320 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2025-04-13 23:26:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:26:27,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:27,498 INFO L325 Elim1Store]: treesize reduction 15, result has 90.2 percent of original size [2025-04-13 23:26:27,499 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 10 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 173 [2025-04-13 23:26:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505734577] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:27,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:27,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 4] total 17 [2025-04-13 23:26:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707955784] [2025-04-13 23:26:27,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:27,593 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:26:27,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:27,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:26:27,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:26:27,593 INFO L87 Difference]: Start difference. First operand 180 states and 480 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 23:26:28,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:28,275 INFO L93 Difference]: Finished difference Result 328 states and 837 transitions. [2025-04-13 23:26:28,275 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 23:26:28,275 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 19 [2025-04-13 23:26:28,275 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:28,277 INFO L225 Difference]: With dead ends: 328 [2025-04-13 23:26:28,277 INFO L226 Difference]: Without dead ends: 319 [2025-04-13 23:26:28,278 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2025-04-13 23:26:28,278 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:28,278 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 0 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:26:28,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2025-04-13 23:26:28,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 210. [2025-04-13 23:26:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.8229665071770333) internal successors, (590), 209 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 590 transitions. [2025-04-13 23:26:28,319 INFO L79 Accepts]: Start accepts. Automaton has 210 states and 590 transitions. Word has length 19 [2025-04-13 23:26:28,319 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:28,319 INFO L485 AbstractCegarLoop]: Abstraction has 210 states and 590 transitions. [2025-04-13 23:26:28,319 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 23:26:28,319 INFO L278 IsEmpty]: Start isEmpty. Operand 210 states and 590 transitions. [2025-04-13 23:26:28,320 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 23:26:28,320 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:28,320 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:28,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-04-13 23:26:28,520 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,SelfDestructingSolverStorable12 [2025-04-13 23:26:28,521 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 23:26:28,521 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:28,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1546920920, now seen corresponding path program 4 times [2025-04-13 23:26:28,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:28,521 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784984798] [2025-04-13 23:26:28,521 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:26:28,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:28,525 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 23:26:28,545 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 23:26:28,545 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:26:28,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:29,269 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 23:26:29,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:29,269 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784984798] [2025-04-13 23:26:29,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784984798] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:29,269 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704285294] [2025-04-13 23:26:29,269 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:26:29,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:29,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:29,272 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 23:26:29,273 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 23:26:29,311 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 23:26:29,327 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 23:26:29,327 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:26:29,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:29,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-04-13 23:26:29,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:29,440 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 23:26:29,441 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 45 [2025-04-13 23:26:29,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 23:26:29,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:29,613 INFO L325 Elim1Store]: treesize reduction 15, result has 90.2 percent of original size [2025-04-13 23:26:29,613 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 10 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 173 [2025-04-13 23:26:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:29,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704285294] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:29,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:29,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 4] total 16 [2025-04-13 23:26:29,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638593926] [2025-04-13 23:26:29,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:29,732 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 23:26:29,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:29,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 23:26:29,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:26:29,733 INFO L87 Difference]: Start difference. First operand 210 states and 590 transitions. Second operand has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 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 23:26:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:30,590 INFO L93 Difference]: Finished difference Result 403 states and 1045 transitions. [2025-04-13 23:26:30,590 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 23:26:30,590 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 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 19 [2025-04-13 23:26:30,590 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:30,592 INFO L225 Difference]: With dead ends: 403 [2025-04-13 23:26:30,592 INFO L226 Difference]: Without dead ends: 390 [2025-04-13 23:26:30,593 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=868, Unknown=0, NotChecked=0, Total=992 [2025-04-13 23:26:30,593 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:30,593 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:26:30,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2025-04-13 23:26:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 272. [2025-04-13 23:26:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.022140221402214) internal successors, (819), 271 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 819 transitions. [2025-04-13 23:26:30,653 INFO L79 Accepts]: Start accepts. Automaton has 272 states and 819 transitions. Word has length 19 [2025-04-13 23:26:30,653 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:30,653 INFO L485 AbstractCegarLoop]: Abstraction has 272 states and 819 transitions. [2025-04-13 23:26:30,653 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 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 23:26:30,653 INFO L278 IsEmpty]: Start isEmpty. Operand 272 states and 819 transitions. [2025-04-13 23:26:30,653 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:26:30,654 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:30,654 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:30,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-04-13 23:26:30,854 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,SelfDestructingSolverStorable13 [2025-04-13 23:26:30,854 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 23:26:30,855 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:30,855 INFO L85 PathProgramCache]: Analyzing trace with hash -201721642, now seen corresponding path program 5 times [2025-04-13 23:26:30,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:30,855 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996547147] [2025-04-13 23:26:30,855 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:26:30,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:30,859 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:26:30,884 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:30,884 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:26:30,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:30,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:30,976 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996547147] [2025-04-13 23:26:30,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996547147] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:30,976 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043204727] [2025-04-13 23:26:30,976 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:26:30,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:30,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:30,979 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 23:26:30,980 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 23:26:31,020 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:26:31,221 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:31,222 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:26:31,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:31,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:26:31,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:31,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:31,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043204727] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:31,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:31,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-04-13 23:26:31,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972191438] [2025-04-13 23:26:31,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:31,347 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 23:26:31,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:31,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 23:26:31,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2025-04-13 23:26:31,348 INFO L87 Difference]: Start difference. First operand 272 states and 819 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:31,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:31,876 INFO L93 Difference]: Finished difference Result 392 states and 1137 transitions. [2025-04-13 23:26:31,877 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 23:26:31,877 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:26:31,877 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:31,883 INFO L225 Difference]: With dead ends: 392 [2025-04-13 23:26:31,883 INFO L226 Difference]: Without dead ends: 358 [2025-04-13 23:26:31,883 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2025-04-13 23:26:31,884 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:31,884 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 23:26:31,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2025-04-13 23:26:31,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 311. [2025-04-13 23:26:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 3.193548387096774) internal successors, (990), 310 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:31,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 990 transitions. [2025-04-13 23:26:31,953 INFO L79 Accepts]: Start accepts. Automaton has 311 states and 990 transitions. Word has length 20 [2025-04-13 23:26:31,953 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:31,953 INFO L485 AbstractCegarLoop]: Abstraction has 311 states and 990 transitions. [2025-04-13 23:26:31,953 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:31,953 INFO L278 IsEmpty]: Start isEmpty. Operand 311 states and 990 transitions. [2025-04-13 23:26:31,954 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:26:31,954 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:31,954 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:31,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-04-13 23:26:32,158 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,SelfDestructingSolverStorable14 [2025-04-13 23:26:32,158 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 23:26:32,158 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1263395523, now seen corresponding path program 6 times [2025-04-13 23:26:32,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:32,159 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959377886] [2025-04-13 23:26:32,159 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:26:32,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:32,164 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:26:32,173 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:32,173 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:26:32,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:32,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:32,284 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959377886] [2025-04-13 23:26:32,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959377886] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:32,284 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096887020] [2025-04-13 23:26:32,284 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:26:32,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:32,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:32,289 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 23:26:32,290 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 23:26:32,331 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:26:32,400 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:32,400 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:26:32,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:32,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:26:32,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:32,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:32,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096887020] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:32,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:32,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 23:26:32,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226345399] [2025-04-13 23:26:32,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:32,576 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:26:32,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:32,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:26:32,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:26:32,577 INFO L87 Difference]: Start difference. First operand 311 states and 990 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:33,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:33,038 INFO L93 Difference]: Finished difference Result 399 states and 1169 transitions. [2025-04-13 23:26:33,038 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 23:26:33,038 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:26:33,039 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:33,041 INFO L225 Difference]: With dead ends: 399 [2025-04-13 23:26:33,041 INFO L226 Difference]: Without dead ends: 370 [2025-04-13 23:26:33,043 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2025-04-13 23:26:33,044 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:33,044 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 23:26:33,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2025-04-13 23:26:33,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 339. [2025-04-13 23:26:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 3.136094674556213) internal successors, (1060), 338 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:33,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 1060 transitions. [2025-04-13 23:26:33,123 INFO L79 Accepts]: Start accepts. Automaton has 339 states and 1060 transitions. Word has length 20 [2025-04-13 23:26:33,123 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:33,123 INFO L485 AbstractCegarLoop]: Abstraction has 339 states and 1060 transitions. [2025-04-13 23:26:33,123 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:33,123 INFO L278 IsEmpty]: Start isEmpty. Operand 339 states and 1060 transitions. [2025-04-13 23:26:33,124 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:26:33,124 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:33,124 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:33,130 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 23:26:33,324 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,SelfDestructingSolverStorable15 [2025-04-13 23:26:33,325 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 23:26:33,325 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:33,325 INFO L85 PathProgramCache]: Analyzing trace with hash -448303539, now seen corresponding path program 7 times [2025-04-13 23:26:33,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:33,325 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081077228] [2025-04-13 23:26:33,325 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:26:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:33,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:26:33,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:33,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:26:33,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:33,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:33,442 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081077228] [2025-04-13 23:26:33,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081077228] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:33,442 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395310826] [2025-04-13 23:26:33,442 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:26:33,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:33,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:33,444 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 23:26:33,454 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 23:26:33,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:26:33,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:33,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:26:33,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:33,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:26:33,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:33,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:33,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395310826] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:33,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:33,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-04-13 23:26:33,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51587891] [2025-04-13 23:26:33,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:33,642 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 23:26:33,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:33,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 23:26:33,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2025-04-13 23:26:33,643 INFO L87 Difference]: Start difference. First operand 339 states and 1060 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 23:26:34,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:34,338 INFO L93 Difference]: Finished difference Result 686 states and 2116 transitions. [2025-04-13 23:26:34,338 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 23:26:34,338 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 20 [2025-04-13 23:26:34,338 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:34,342 INFO L225 Difference]: With dead ends: 686 [2025-04-13 23:26:34,342 INFO L226 Difference]: Without dead ends: 679 [2025-04-13 23:26:34,342 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2025-04-13 23:26:34,343 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 258 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:34,343 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 0 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 23:26:34,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2025-04-13 23:26:34,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 344. [2025-04-13 23:26:34,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 3.1253644314868803) internal successors, (1072), 343 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1072 transitions. [2025-04-13 23:26:34,433 INFO L79 Accepts]: Start accepts. Automaton has 344 states and 1072 transitions. Word has length 20 [2025-04-13 23:26:34,433 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:34,433 INFO L485 AbstractCegarLoop]: Abstraction has 344 states and 1072 transitions. [2025-04-13 23:26:34,433 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 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 23:26:34,433 INFO L278 IsEmpty]: Start isEmpty. Operand 344 states and 1072 transitions. [2025-04-13 23:26:34,434 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:26:34,434 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:34,434 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:34,440 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 23:26:34,638 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,SelfDestructingSolverStorable16 [2025-04-13 23:26:34,639 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 23:26:34,639 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:34,639 INFO L85 PathProgramCache]: Analyzing trace with hash 604030776, now seen corresponding path program 8 times [2025-04-13 23:26:34,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:34,639 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094382190] [2025-04-13 23:26:34,639 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:26:34,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:34,644 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:26:34,652 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:34,652 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:26:34,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:34,770 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 23:26:34,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:34,771 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094382190] [2025-04-13 23:26:34,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094382190] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:34,771 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141790233] [2025-04-13 23:26:34,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:26:34,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:34,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:34,773 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 23:26:34,774 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 23:26:34,809 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:26:34,822 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:34,823 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:26:34,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:34,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:26:34,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:34,874 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 23:26:34,874 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:34,979 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 23:26:34,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141790233] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:34,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:34,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 23:26:34,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697601431] [2025-04-13 23:26:34,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:34,979 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:26:34,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:34,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:26:34,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:26:34,980 INFO L87 Difference]: Start difference. First operand 344 states and 1072 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:35,717 INFO L93 Difference]: Finished difference Result 533 states and 1567 transitions. [2025-04-13 23:26:35,717 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 23:26:35,717 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 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 20 [2025-04-13 23:26:35,717 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:35,720 INFO L225 Difference]: With dead ends: 533 [2025-04-13 23:26:35,720 INFO L226 Difference]: Without dead ends: 516 [2025-04-13 23:26:35,721 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=1029, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 23:26:35,721 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:35,721 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:26:35,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2025-04-13 23:26:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 404. [2025-04-13 23:26:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 3.1910669975186106) internal successors, (1286), 403 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1286 transitions. [2025-04-13 23:26:35,826 INFO L79 Accepts]: Start accepts. Automaton has 404 states and 1286 transitions. Word has length 20 [2025-04-13 23:26:35,826 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:35,826 INFO L485 AbstractCegarLoop]: Abstraction has 404 states and 1286 transitions. [2025-04-13 23:26:35,826 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:35,826 INFO L278 IsEmpty]: Start isEmpty. Operand 404 states and 1286 transitions. [2025-04-13 23:26:35,827 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:26:35,827 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:35,827 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:35,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-04-13 23:26:36,028 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-04-13 23:26:36,028 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 23:26:36,028 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:36,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2015171021, now seen corresponding path program 9 times [2025-04-13 23:26:36,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:36,029 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190720974] [2025-04-13 23:26:36,029 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:26:36,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:36,036 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:26:36,058 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:36,058 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:26:36,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:36,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:36,160 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190720974] [2025-04-13 23:26:36,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190720974] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:36,160 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322044800] [2025-04-13 23:26:36,160 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:26:36,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:36,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:36,162 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 23:26:36,164 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 23:26:36,205 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:26:36,236 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:36,237 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:26:36,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:36,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:26:36,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:36,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:36,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322044800] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:36,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:36,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 23:26:36,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221333559] [2025-04-13 23:26:36,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:36,399 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:26:36,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:36,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:26:36,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:26:36,400 INFO L87 Difference]: Start difference. First operand 404 states and 1286 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:37,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:37,551 INFO L93 Difference]: Finished difference Result 857 states and 2581 transitions. [2025-04-13 23:26:37,551 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 23:26:37,551 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 20 [2025-04-13 23:26:37,551 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:37,555 INFO L225 Difference]: With dead ends: 857 [2025-04-13 23:26:37,555 INFO L226 Difference]: Without dead ends: 842 [2025-04-13 23:26:37,556 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=497, Invalid=1665, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:26:37,556 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 367 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:37,557 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 0 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:26:37,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2025-04-13 23:26:37,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 418. [2025-04-13 23:26:37,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 3.211031175059952) internal successors, (1339), 417 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1339 transitions. [2025-04-13 23:26:37,668 INFO L79 Accepts]: Start accepts. Automaton has 418 states and 1339 transitions. Word has length 20 [2025-04-13 23:26:37,669 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:37,669 INFO L485 AbstractCegarLoop]: Abstraction has 418 states and 1339 transitions. [2025-04-13 23:26:37,669 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:37,669 INFO L278 IsEmpty]: Start isEmpty. Operand 418 states and 1339 transitions. [2025-04-13 23:26:37,670 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:26:37,670 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:37,670 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:37,677 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 23:26:37,875 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:37,875 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 23:26:37,875 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1917535511, now seen corresponding path program 10 times [2025-04-13 23:26:37,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:37,875 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695138717] [2025-04-13 23:26:37,875 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:26:37,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:37,879 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:26:37,885 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:37,885 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:26:37,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:37,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:37,999 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695138717] [2025-04-13 23:26:37,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695138717] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:37,999 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390213912] [2025-04-13 23:26:37,999 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:26:37,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:37,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:38,003 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 23:26:38,003 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 23:26:38,043 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:26:38,060 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:38,060 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:26:38,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:38,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:26:38,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:38,154 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:38,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390213912] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:38,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:38,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 23:26:38,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982821696] [2025-04-13 23:26:38,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:38,279 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:26:38,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:38,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:26:38,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:26:38,279 INFO L87 Difference]: Start difference. First operand 418 states and 1339 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:39,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:39,107 INFO L93 Difference]: Finished difference Result 552 states and 1629 transitions. [2025-04-13 23:26:39,107 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 23:26:39,107 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:26:39,107 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:39,110 INFO L225 Difference]: With dead ends: 552 [2025-04-13 23:26:39,110 INFO L226 Difference]: Without dead ends: 529 [2025-04-13 23:26:39,110 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 23:26:39,111 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:39,111 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 23:26:39,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2025-04-13 23:26:39,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 444. [2025-04-13 23:26:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.205417607223476) internal successors, (1420), 443 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1420 transitions. [2025-04-13 23:26:39,229 INFO L79 Accepts]: Start accepts. Automaton has 444 states and 1420 transitions. Word has length 20 [2025-04-13 23:26:39,229 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:39,229 INFO L485 AbstractCegarLoop]: Abstraction has 444 states and 1420 transitions. [2025-04-13 23:26:39,229 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:39,229 INFO L278 IsEmpty]: Start isEmpty. Operand 444 states and 1420 transitions. [2025-04-13 23:26:39,230 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:26:39,230 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:39,230 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:39,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-04-13 23:26:39,432 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:39,432 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 23:26:39,432 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:39,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1057977992, now seen corresponding path program 11 times [2025-04-13 23:26:39,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:39,432 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389368390] [2025-04-13 23:26:39,432 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:26:39,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:39,439 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:26:39,452 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:39,453 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:26:39,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:39,540 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 23:26:39,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:39,540 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389368390] [2025-04-13 23:26:39,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389368390] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:39,540 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431688636] [2025-04-13 23:26:39,540 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:26:39,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:39,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:39,542 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 23:26:39,544 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 23:26:39,584 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:26:39,810 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:39,810 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:26:39,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:39,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:26:39,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:39,857 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 23:26:39,857 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:39,963 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 23:26:39,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431688636] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:39,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:39,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-04-13 23:26:39,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90377894] [2025-04-13 23:26:39,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:39,964 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 23:26:39,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:39,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 23:26:39,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2025-04-13 23:26:39,965 INFO L87 Difference]: Start difference. First operand 444 states and 1420 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:40,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:40,658 INFO L93 Difference]: Finished difference Result 601 states and 1784 transitions. [2025-04-13 23:26:40,658 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 23:26:40,658 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:26:40,658 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:40,661 INFO L225 Difference]: With dead ends: 601 [2025-04-13 23:26:40,661 INFO L226 Difference]: Without dead ends: 587 [2025-04-13 23:26:40,662 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2025-04-13 23:26:40,662 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:40,662 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 0 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 23:26:40,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-04-13 23:26:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 450. [2025-04-13 23:26:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 3.2182628062360803) internal successors, (1445), 449 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1445 transitions. [2025-04-13 23:26:40,783 INFO L79 Accepts]: Start accepts. Automaton has 450 states and 1445 transitions. Word has length 20 [2025-04-13 23:26:40,783 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:40,783 INFO L485 AbstractCegarLoop]: Abstraction has 450 states and 1445 transitions. [2025-04-13 23:26:40,783 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:40,783 INFO L278 IsEmpty]: Start isEmpty. Operand 450 states and 1445 transitions. [2025-04-13 23:26:40,784 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:26:40,784 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:40,784 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:40,790 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 23:26:40,984 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:40,985 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 23:26:40,985 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:40,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1140385912, now seen corresponding path program 12 times [2025-04-13 23:26:40,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:40,985 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938380199] [2025-04-13 23:26:40,985 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:26:40,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:40,990 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:26:40,997 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:40,997 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 23:26:40,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:41,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:41,120 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938380199] [2025-04-13 23:26:41,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938380199] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:41,120 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69487109] [2025-04-13 23:26:41,121 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:26:41,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:41,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:41,122 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 23:26:41,124 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 23:26:41,162 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:26:41,179 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:41,179 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 23:26:41,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:41,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:26:41,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:41,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:41,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69487109] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:41,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:41,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 23:26:41,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538846519] [2025-04-13 23:26:41,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:41,372 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:26:41,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:41,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:26:41,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:26:41,373 INFO L87 Difference]: Start difference. First operand 450 states and 1445 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:42,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:42,764 INFO L93 Difference]: Finished difference Result 791 states and 2343 transitions. [2025-04-13 23:26:42,765 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-04-13 23:26:42,765 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 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 20 [2025-04-13 23:26:42,765 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:42,768 INFO L225 Difference]: With dead ends: 791 [2025-04-13 23:26:42,768 INFO L226 Difference]: Without dead ends: 771 [2025-04-13 23:26:42,769 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=478, Invalid=2384, Unknown=0, NotChecked=0, Total=2862 [2025-04-13 23:26:42,770 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 162 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:42,770 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 0 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:26:42,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2025-04-13 23:26:42,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 514. [2025-04-13 23:26:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.2690058479532165) internal successors, (1677), 513 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1677 transitions. [2025-04-13 23:26:42,915 INFO L79 Accepts]: Start accepts. Automaton has 514 states and 1677 transitions. Word has length 20 [2025-04-13 23:26:42,915 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:42,915 INFO L485 AbstractCegarLoop]: Abstraction has 514 states and 1677 transitions. [2025-04-13 23:26:42,915 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:42,915 INFO L278 IsEmpty]: Start isEmpty. Operand 514 states and 1677 transitions. [2025-04-13 23:26:42,916 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:26:42,917 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:42,917 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:42,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-04-13 23:26:43,117 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:43,117 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 23:26:43,117 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:43,118 INFO L85 PathProgramCache]: Analyzing trace with hash 243199993, now seen corresponding path program 13 times [2025-04-13 23:26:43,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:43,118 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403592071] [2025-04-13 23:26:43,118 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:26:43,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:43,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:26:43,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:43,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:26:43,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:43,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:43,233 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403592071] [2025-04-13 23:26:43,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403592071] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:43,233 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64793987] [2025-04-13 23:26:43,234 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:26:43,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:43,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:43,235 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 23:26:43,237 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 23:26:43,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:26:43,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:43,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:26:43,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:43,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:26:43,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:43,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:43,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64793987] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:43,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:43,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:26:43,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763812170] [2025-04-13 23:26:43,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:43,405 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:26:43,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:43,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:26:43,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:26:43,405 INFO L87 Difference]: Start difference. First operand 514 states and 1677 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:44,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:44,708 INFO L93 Difference]: Finished difference Result 1066 states and 3204 transitions. [2025-04-13 23:26:44,709 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 23:26:44,709 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 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 20 [2025-04-13 23:26:44,709 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:44,713 INFO L225 Difference]: With dead ends: 1066 [2025-04-13 23:26:44,713 INFO L226 Difference]: Without dead ends: 1059 [2025-04-13 23:26:44,714 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:26:44,714 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 376 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:44,714 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 0 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:26:44,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2025-04-13 23:26:44,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 514. [2025-04-13 23:26:44,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.257309941520468) internal successors, (1671), 513 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1671 transitions. [2025-04-13 23:26:44,866 INFO L79 Accepts]: Start accepts. Automaton has 514 states and 1671 transitions. Word has length 20 [2025-04-13 23:26:44,866 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:44,866 INFO L485 AbstractCegarLoop]: Abstraction has 514 states and 1671 transitions. [2025-04-13 23:26:44,866 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:44,866 INFO L278 IsEmpty]: Start isEmpty. Operand 514 states and 1671 transitions. [2025-04-13 23:26:44,867 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:26:44,867 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:44,867 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:44,873 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 23:26:45,067 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:45,068 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 23:26:45,068 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:45,068 INFO L85 PathProgramCache]: Analyzing trace with hash 206922203, now seen corresponding path program 14 times [2025-04-13 23:26:45,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:45,068 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280967823] [2025-04-13 23:26:45,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:26:45,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:45,072 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:26:45,085 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:45,085 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:26:45,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:45,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:45,180 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280967823] [2025-04-13 23:26:45,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280967823] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:45,180 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935107187] [2025-04-13 23:26:45,181 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:26:45,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:45,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:45,183 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 23:26:45,183 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 23:26:45,220 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:26:45,234 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:45,234 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:26:45,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:45,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:26:45,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:45,297 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:26:45,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935107187] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:45,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:45,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 23:26:45,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299318605] [2025-04-13 23:26:45,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:45,402 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:26:45,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:45,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:26:45,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:26:45,403 INFO L87 Difference]: Start difference. First operand 514 states and 1671 transitions. Second operand has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:50,250 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:26:54,363 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:26:58,524 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 [] [2025-04-13 23:26:58,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:26:58,665 INFO L93 Difference]: Finished difference Result 761 states and 2240 transitions. [2025-04-13 23:26:58,665 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 23:26:58,665 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 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 20 [2025-04-13 23:26:58,665 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:26:58,668 INFO L225 Difference]: With dead ends: 761 [2025-04-13 23:26:58,668 INFO L226 Difference]: Without dead ends: 736 [2025-04-13 23:26:58,669 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=296, Invalid=1344, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 23:26:58,669 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 111 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:26:58,669 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 0 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 854 Invalid, 3 Unknown, 0 Unchecked, 12.5s Time] [2025-04-13 23:26:58,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2025-04-13 23:26:58,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 548. [2025-04-13 23:26:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 3.319926873857404) internal successors, (1816), 547 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1816 transitions. [2025-04-13 23:26:58,831 INFO L79 Accepts]: Start accepts. Automaton has 548 states and 1816 transitions. Word has length 20 [2025-04-13 23:26:58,831 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:26:58,831 INFO L485 AbstractCegarLoop]: Abstraction has 548 states and 1816 transitions. [2025-04-13 23:26:58,832 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:26:58,832 INFO L278 IsEmpty]: Start isEmpty. Operand 548 states and 1816 transitions. [2025-04-13 23:26:58,833 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:26:58,833 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:26:58,833 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:26:58,844 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 23:26:59,033 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:59,033 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 23:26:59,034 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:26:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash -567508211, now seen corresponding path program 15 times [2025-04-13 23:26:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:26:59,034 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314609961] [2025-04-13 23:26:59,034 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:26:59,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:26:59,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:26:59,044 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:59,045 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:26:59,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:59,164 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 23:26:59,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:26:59,164 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314609961] [2025-04-13 23:26:59,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314609961] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:26:59,164 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367652240] [2025-04-13 23:26:59,164 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:26:59,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:26:59,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:26:59,167 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 23:26:59,168 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 23:26:59,250 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:26:59,284 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:26:59,284 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:26:59,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:26:59,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:26:59,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:26:59,332 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 23:26:59,332 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:26:59,456 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 23:26:59,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367652240] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:26:59,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:26:59,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:26:59,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478773742] [2025-04-13 23:26:59,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:26:59,457 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:26:59,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:26:59,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:26:59,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:26:59,458 INFO L87 Difference]: Start difference. First operand 548 states and 1816 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:00,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:27:00,646 INFO L93 Difference]: Finished difference Result 1021 states and 3164 transitions. [2025-04-13 23:27:00,646 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 23:27:00,647 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 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 20 [2025-04-13 23:27:00,647 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:27:00,651 INFO L225 Difference]: With dead ends: 1021 [2025-04-13 23:27:00,651 INFO L226 Difference]: Without dead ends: 1014 [2025-04-13 23:27:00,651 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 23:27:00,652 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 222 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:27:00,652 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 0 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:27:00,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2025-04-13 23:27:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 544. [2025-04-13 23:27:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 3.314917127071823) internal successors, (1800), 543 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1800 transitions. [2025-04-13 23:27:00,827 INFO L79 Accepts]: Start accepts. Automaton has 544 states and 1800 transitions. Word has length 20 [2025-04-13 23:27:00,827 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:27:00,827 INFO L485 AbstractCegarLoop]: Abstraction has 544 states and 1800 transitions. [2025-04-13 23:27:00,827 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:00,827 INFO L278 IsEmpty]: Start isEmpty. Operand 544 states and 1800 transitions. [2025-04-13 23:27:00,830 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:27:00,830 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:27:00,830 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:27:00,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-04-13 23:27:01,034 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,SelfDestructingSolverStorable24 [2025-04-13 23:27:01,034 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 23:27:01,034 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:27:01,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1151684186, now seen corresponding path program 16 times [2025-04-13 23:27:01,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:27:01,034 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363907318] [2025-04-13 23:27:01,034 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:27:01,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:27:01,039 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:27:01,044 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:27:01,045 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:27:01,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:01,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:27:01,173 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363907318] [2025-04-13 23:27:01,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363907318] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:27:01,173 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312434016] [2025-04-13 23:27:01,173 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:27:01,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:27:01,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:27:01,175 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 23:27:01,176 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 23:27:01,217 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:27:01,233 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:27:01,233 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:27:01,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:01,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:27:01,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:27:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:01,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:27:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:01,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312434016] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:27:01,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:27:01,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 23:27:01,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888831525] [2025-04-13 23:27:01,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:27:01,421 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:27:01,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:27:01,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:27:01,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:27:01,422 INFO L87 Difference]: Start difference. First operand 544 states and 1800 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:03,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:27:03,379 INFO L93 Difference]: Finished difference Result 996 states and 2896 transitions. [2025-04-13 23:27:03,379 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-04-13 23:27:03,379 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 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 20 [2025-04-13 23:27:03,380 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:27:03,383 INFO L225 Difference]: With dead ends: 996 [2025-04-13 23:27:03,383 INFO L226 Difference]: Without dead ends: 982 [2025-04-13 23:27:03,384 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=669, Invalid=2871, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 23:27:03,386 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 184 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:27:03,386 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 0 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:27:03,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2025-04-13 23:27:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 610. [2025-04-13 23:27:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 3.374384236453202) internal successors, (2055), 609 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 2055 transitions. [2025-04-13 23:27:03,614 INFO L79 Accepts]: Start accepts. Automaton has 610 states and 2055 transitions. Word has length 20 [2025-04-13 23:27:03,614 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:27:03,614 INFO L485 AbstractCegarLoop]: Abstraction has 610 states and 2055 transitions. [2025-04-13 23:27:03,614 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:03,614 INFO L278 IsEmpty]: Start isEmpty. Operand 610 states and 2055 transitions. [2025-04-13 23:27:03,615 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:27:03,615 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:27:03,615 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:27:03,621 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 23:27:03,815 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,SelfDestructingSolverStorable25 [2025-04-13 23:27:03,816 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 23:27:03,816 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:27:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1181941373, now seen corresponding path program 17 times [2025-04-13 23:27:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:27:03,816 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240920581] [2025-04-13 23:27:03,816 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:27:03,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:27:03,820 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:27:03,831 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:27:03,831 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:27:03,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:03,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:03,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:27:03,921 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240920581] [2025-04-13 23:27:03,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240920581] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:27:03,921 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615103429] [2025-04-13 23:27:03,921 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:27:03,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:27:03,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:27:03,923 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 23:27:03,924 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 23:27:03,968 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:27:04,050 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:27:04,050 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:27:04,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:04,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:27:04,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:27:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:04,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:27:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:04,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615103429] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:27:04,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:27:04,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-04-13 23:27:04,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544488744] [2025-04-13 23:27:04,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:27:04,215 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 23:27:04,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:27:04,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 23:27:04,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:27:04,216 INFO L87 Difference]: Start difference. First operand 610 states and 2055 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:29,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:27:29,963 INFO L93 Difference]: Finished difference Result 1036 states and 3265 transitions. [2025-04-13 23:27:29,964 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-04-13 23:27:29,964 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:27:29,964 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:27:29,968 INFO L225 Difference]: With dead ends: 1036 [2025-04-13 23:27:29,968 INFO L226 Difference]: Without dead ends: 1025 [2025-04-13 23:27:29,969 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=356, Invalid=1450, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 23:27:29,969 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 209 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:27:29,969 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 0 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:27:29,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2025-04-13 23:27:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 630. [2025-04-13 23:27:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 3.384737678855326) internal successors, (2129), 629 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 2129 transitions. [2025-04-13 23:27:30,199 INFO L79 Accepts]: Start accepts. Automaton has 630 states and 2129 transitions. Word has length 20 [2025-04-13 23:27:30,200 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:27:30,200 INFO L485 AbstractCegarLoop]: Abstraction has 630 states and 2129 transitions. [2025-04-13 23:27:30,200 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:30,200 INFO L278 IsEmpty]: Start isEmpty. Operand 630 states and 2129 transitions. [2025-04-13 23:27:30,201 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:27:30,201 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:27:30,201 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:27:30,208 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 23:27:30,401 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,SelfDestructingSolverStorable26 [2025-04-13 23:27:30,402 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 23:27:30,402 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:27:30,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1510826857, now seen corresponding path program 18 times [2025-04-13 23:27:30,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:27:30,402 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792668284] [2025-04-13 23:27:30,402 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:27:30,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:27:30,407 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:27:30,416 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:27:30,416 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:27:30,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:30,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:27:30,617 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792668284] [2025-04-13 23:27:30,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792668284] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:27:30,617 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742958338] [2025-04-13 23:27:30,617 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:27:30,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:27:30,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:27:30,619 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 23:27:30,621 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 23:27:30,665 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:27:30,692 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:27:30,692 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:27:30,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:30,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:27:30,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:27:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:30,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:27:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:30,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742958338] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:27:30,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:27:30,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2025-04-13 23:27:30,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537841632] [2025-04-13 23:27:30,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:27:30,919 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:27:30,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:27:30,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:27:30,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:27:30,919 INFO L87 Difference]: Start difference. First operand 630 states and 2129 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:37,263 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 [] [2025-04-13 23:27:41,635 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 [] [2025-04-13 23:27:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:27:42,137 INFO L93 Difference]: Finished difference Result 968 states and 2882 transitions. [2025-04-13 23:27:42,137 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-04-13 23:27:42,138 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:27:42,138 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:27:42,141 INFO L225 Difference]: With dead ends: 968 [2025-04-13 23:27:42,142 INFO L226 Difference]: Without dead ends: 937 [2025-04-13 23:27:42,142 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=434, Invalid=2116, Unknown=0, NotChecked=0, Total=2550 [2025-04-13 23:27:42,143 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 222 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 34 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:27:42,143 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 0 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1014 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2025-04-13 23:27:42,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2025-04-13 23:27:42,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 656. [2025-04-13 23:27:42,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 3.4076335877862594) internal successors, (2232), 655 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:42,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 2232 transitions. [2025-04-13 23:27:42,373 INFO L79 Accepts]: Start accepts. Automaton has 656 states and 2232 transitions. Word has length 20 [2025-04-13 23:27:42,373 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:27:42,373 INFO L485 AbstractCegarLoop]: Abstraction has 656 states and 2232 transitions. [2025-04-13 23:27:42,373 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:42,373 INFO L278 IsEmpty]: Start isEmpty. Operand 656 states and 2232 transitions. [2025-04-13 23:27:42,375 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:27:42,375 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:27:42,375 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:27:42,382 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 23:27:42,575 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:27:42,576 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 23:27:42,576 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:27:42,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1960280264, now seen corresponding path program 19 times [2025-04-13 23:27:42,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:27:42,576 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230112988] [2025-04-13 23:27:42,576 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:27:42,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:27:42,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:27:42,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:27:42,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:27:42,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:42,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:27:42,699 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230112988] [2025-04-13 23:27:42,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230112988] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:27:42,699 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503525114] [2025-04-13 23:27:42,699 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:27:42,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:27:42,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:27:42,701 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 23:27:42,702 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 23:27:42,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:27:42,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:27:42,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:27:42,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:42,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:27:42,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:27:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:42,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:27:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:42,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503525114] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:27:42,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:27:42,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:27:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490473] [2025-04-13 23:27:42,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:27:42,978 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:27:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:27:42,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:27:42,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:27:42,978 INFO L87 Difference]: Start difference. First operand 656 states and 2232 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:27:44,727 INFO L93 Difference]: Finished difference Result 877 states and 2735 transitions. [2025-04-13 23:27:44,728 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 23:27:44,728 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 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 20 [2025-04-13 23:27:44,728 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:27:44,731 INFO L225 Difference]: With dead ends: 877 [2025-04-13 23:27:44,731 INFO L226 Difference]: Without dead ends: 863 [2025-04-13 23:27:44,732 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=304, Invalid=1588, Unknown=0, NotChecked=0, Total=1892 [2025-04-13 23:27:44,732 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:27:44,732 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:27:44,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2025-04-13 23:27:44,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 664. [2025-04-13 23:27:44,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 3.414781297134238) internal successors, (2264), 663 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 2264 transitions. [2025-04-13 23:27:44,965 INFO L79 Accepts]: Start accepts. Automaton has 664 states and 2264 transitions. Word has length 20 [2025-04-13 23:27:44,966 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:27:44,966 INFO L485 AbstractCegarLoop]: Abstraction has 664 states and 2264 transitions. [2025-04-13 23:27:44,966 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:44,966 INFO L278 IsEmpty]: Start isEmpty. Operand 664 states and 2264 transitions. [2025-04-13 23:27:44,967 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:27:44,967 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:27:44,967 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:27:44,973 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 23:27:45,167 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-04-13 23:27:45,167 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 23:27:45,168 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:27:45,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1480350664, now seen corresponding path program 20 times [2025-04-13 23:27:45,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:27:45,168 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119994532] [2025-04-13 23:27:45,168 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:27:45,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:27:45,172 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:27:45,176 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:27:45,176 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:27:45,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:45,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:27:45,331 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119994532] [2025-04-13 23:27:45,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119994532] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:27:45,331 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341461711] [2025-04-13 23:27:45,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:27:45,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:27:45,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:27:45,333 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 23:27:45,335 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 23:27:45,385 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:27:45,401 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:27:45,401 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:27:45,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:45,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:27:45,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:27:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:45,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:27:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:45,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341461711] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:27:45,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:27:45,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 23:27:45,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868269150] [2025-04-13 23:27:45,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:27:45,604 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:27:45,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:27:45,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:27:45,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:27:45,604 INFO L87 Difference]: Start difference. First operand 664 states and 2264 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:47,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:27:47,654 INFO L93 Difference]: Finished difference Result 1186 states and 3474 transitions. [2025-04-13 23:27:47,654 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-04-13 23:27:47,654 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 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 20 [2025-04-13 23:27:47,654 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:27:47,659 INFO L225 Difference]: With dead ends: 1186 [2025-04-13 23:27:47,659 INFO L226 Difference]: Without dead ends: 1172 [2025-04-13 23:27:47,659 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=481, Invalid=1681, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:27:47,660 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 163 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:27:47,660 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 0 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:27:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2025-04-13 23:27:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 714. [2025-04-13 23:27:47,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 713 states have (on average 3.4488078541374474) internal successors, (2459), 713 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 2459 transitions. [2025-04-13 23:27:47,935 INFO L79 Accepts]: Start accepts. Automaton has 714 states and 2459 transitions. Word has length 20 [2025-04-13 23:27:47,935 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:27:47,935 INFO L485 AbstractCegarLoop]: Abstraction has 714 states and 2459 transitions. [2025-04-13 23:27:47,935 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:27:47,935 INFO L278 IsEmpty]: Start isEmpty. Operand 714 states and 2459 transitions. [2025-04-13 23:27:47,936 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:27:47,936 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:27:47,936 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:27:47,943 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 23:27:48,136 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:27:48,137 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 23:27:48,137 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:27:48,137 INFO L85 PathProgramCache]: Analyzing trace with hash -278468393, now seen corresponding path program 21 times [2025-04-13 23:27:48,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:27:48,137 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661426050] [2025-04-13 23:27:48,137 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:27:48,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:27:48,141 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:27:48,149 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:27:48,150 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:27:48,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:48,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:27:48,289 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661426050] [2025-04-13 23:27:48,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661426050] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:27:48,289 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823592855] [2025-04-13 23:27:48,289 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:27:48,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:27:48,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:27:48,291 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 23:27:48,291 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 23:27:48,342 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:27:48,359 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:27:48,359 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:27:48,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:27:48,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:27:48,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:27:48,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:48,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:27:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:27:48,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823592855] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:27:48,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:27:48,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:27:48,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811504983] [2025-04-13 23:27:48,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:27:48,604 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:27:48,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:27:48,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:27:48,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:27:48,604 INFO L87 Difference]: Start difference. First operand 714 states and 2459 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:20,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:28:20,278 INFO L93 Difference]: Finished difference Result 1320 states and 4028 transitions. [2025-04-13 23:28:20,279 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-04-13 23:28:20,279 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 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 20 [2025-04-13 23:28:20,279 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:28:20,288 INFO L225 Difference]: With dead ends: 1320 [2025-04-13 23:28:20,288 INFO L226 Difference]: Without dead ends: 1303 [2025-04-13 23:28:20,290 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=748, Invalid=3158, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 23:28:20,290 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 329 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:28:20,290 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 0 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 23:28:20,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2025-04-13 23:28:20,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 716. [2025-04-13 23:28:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 3.4461538461538463) internal successors, (2464), 715 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 2464 transitions. [2025-04-13 23:28:20,609 INFO L79 Accepts]: Start accepts. Automaton has 716 states and 2464 transitions. Word has length 20 [2025-04-13 23:28:20,609 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:28:20,609 INFO L485 AbstractCegarLoop]: Abstraction has 716 states and 2464 transitions. [2025-04-13 23:28:20,610 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:20,610 INFO L278 IsEmpty]: Start isEmpty. Operand 716 states and 2464 transitions. [2025-04-13 23:28:20,611 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:28:20,611 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:28:20,611 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:28:20,617 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 23:28:20,811 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,SelfDestructingSolverStorable30 [2025-04-13 23:28:20,812 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 23:28:20,812 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:28:20,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1566238117, now seen corresponding path program 22 times [2025-04-13 23:28:20,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:28:20,812 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370682797] [2025-04-13 23:28:20,812 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:28:20,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:28:20,816 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:28:20,821 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:28:20,821 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:28:20,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:28:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:28:20,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:28:20,939 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370682797] [2025-04-13 23:28:20,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370682797] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:28:20,939 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378944144] [2025-04-13 23:28:20,939 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:28:20,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:28:20,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:28:20,941 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 23:28:20,942 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 23:28:20,984 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:28:20,996 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:28:20,996 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:28:20,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:28:20,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:28:20,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:28:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:28:21,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:28:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:28:21,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378944144] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:28:21,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:28:21,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 23:28:21,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072366874] [2025-04-13 23:28:21,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:28:21,281 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:28:21,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:28:21,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:28:21,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:28:21,281 INFO L87 Difference]: Start difference. First operand 716 states and 2464 transitions. Second operand has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:28:22,968 INFO L93 Difference]: Finished difference Result 980 states and 3060 transitions. [2025-04-13 23:28:22,968 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 23:28:22,968 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 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 20 [2025-04-13 23:28:22,969 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:28:22,973 INFO L225 Difference]: With dead ends: 980 [2025-04-13 23:28:22,973 INFO L226 Difference]: Without dead ends: 971 [2025-04-13 23:28:22,974 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=288, Invalid=1044, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 23:28:22,974 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 123 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:28:22,974 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 0 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:28:22,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2025-04-13 23:28:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 724. [2025-04-13 23:28:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 3.446749654218534) internal successors, (2492), 723 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 2492 transitions. [2025-04-13 23:28:23,279 INFO L79 Accepts]: Start accepts. Automaton has 724 states and 2492 transitions. Word has length 20 [2025-04-13 23:28:23,279 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:28:23,279 INFO L485 AbstractCegarLoop]: Abstraction has 724 states and 2492 transitions. [2025-04-13 23:28:23,279 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:23,279 INFO L278 IsEmpty]: Start isEmpty. Operand 724 states and 2492 transitions. [2025-04-13 23:28:23,280 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:28:23,280 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:28:23,280 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:28:23,286 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 23:28:23,481 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:28:23,481 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 23:28:23,481 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:28:23,481 INFO L85 PathProgramCache]: Analyzing trace with hash -247992200, now seen corresponding path program 23 times [2025-04-13 23:28:23,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:28:23,481 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121984258] [2025-04-13 23:28:23,481 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:28:23,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:28:23,485 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:28:23,492 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:28:23,492 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:28:23,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:28:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:28:23,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:28:23,610 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121984258] [2025-04-13 23:28:23,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121984258] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:28:23,610 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807257206] [2025-04-13 23:28:23,610 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:28:23,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:28:23,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:28:23,612 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 23:28:23,614 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 23:28:23,655 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:28:23,691 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:28:23,691 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:28:23,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:28:23,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:28:23,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:28:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:28:23,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:28:23,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:28:23,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807257206] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:28:23,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:28:23,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:28:23,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232893206] [2025-04-13 23:28:23,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:28:23,893 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:28:23,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:28:23,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:28:23,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:28:23,893 INFO L87 Difference]: Start difference. First operand 724 states and 2492 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:28:25,559 INFO L93 Difference]: Finished difference Result 969 states and 3041 transitions. [2025-04-13 23:28:25,560 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-13 23:28:25,560 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 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 20 [2025-04-13 23:28:25,560 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:28:25,563 INFO L225 Difference]: With dead ends: 969 [2025-04-13 23:28:25,563 INFO L226 Difference]: Without dead ends: 955 [2025-04-13 23:28:25,564 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 23:28:25,564 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:28:25,564 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 0 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:28:25,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2025-04-13 23:28:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 724. [2025-04-13 23:28:25,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 3.4439834024896268) internal successors, (2490), 723 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 2490 transitions. [2025-04-13 23:28:25,845 INFO L79 Accepts]: Start accepts. Automaton has 724 states and 2490 transitions. Word has length 20 [2025-04-13 23:28:25,845 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:28:25,845 INFO L485 AbstractCegarLoop]: Abstraction has 724 states and 2490 transitions. [2025-04-13 23:28:25,845 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:25,845 INFO L278 IsEmpty]: Start isEmpty. Operand 724 states and 2490 transitions. [2025-04-13 23:28:25,846 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:28:25,846 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:28:25,846 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:28:25,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-04-13 23:28:26,047 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:28:26,047 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 23:28:26,047 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:28:26,048 INFO L85 PathProgramCache]: Analyzing trace with hash 710535555, now seen corresponding path program 24 times [2025-04-13 23:28:26,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:28:26,048 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906940585] [2025-04-13 23:28:26,048 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:28:26,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:28:26,051 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:28:26,056 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:28:26,056 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:28:26,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:28:26,206 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 23:28:26,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:28:26,206 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906940585] [2025-04-13 23:28:26,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906940585] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:28:26,207 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697465029] [2025-04-13 23:28:26,207 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:28:26,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:28:26,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:28:26,208 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 23:28:26,209 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 23:28:26,251 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:28:26,276 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:28:26,277 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:28:26,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:28:26,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:28:26,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:28:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:28:26,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:28:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:28:26,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697465029] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:28:26,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:28:26,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2025-04-13 23:28:26,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484217873] [2025-04-13 23:28:26,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:28:26,538 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:28:26,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:28:26,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:28:26,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:28:26,539 INFO L87 Difference]: Start difference. First operand 724 states and 2490 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:27,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:28:27,816 INFO L93 Difference]: Finished difference Result 840 states and 2742 transitions. [2025-04-13 23:28:27,816 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 23:28:27,816 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 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 20 [2025-04-13 23:28:27,816 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:28:27,819 INFO L225 Difference]: With dead ends: 840 [2025-04-13 23:28:27,819 INFO L226 Difference]: Without dead ends: 825 [2025-04-13 23:28:27,819 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2025-04-13 23:28:27,820 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:28:27,820 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:28:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2025-04-13 23:28:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 732. [2025-04-13 23:28:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 3.436388508891929) internal successors, (2512), 731 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 2512 transitions. [2025-04-13 23:28:28,113 INFO L79 Accepts]: Start accepts. Automaton has 732 states and 2512 transitions. Word has length 20 [2025-04-13 23:28:28,113 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:28:28,113 INFO L485 AbstractCegarLoop]: Abstraction has 732 states and 2512 transitions. [2025-04-13 23:28:28,113 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:28,113 INFO L278 IsEmpty]: Start isEmpty. Operand 732 states and 2512 transitions. [2025-04-13 23:28:28,114 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:28:28,114 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:28:28,114 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:28:28,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-04-13 23:28:28,314 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:28:28,315 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 23:28:28,315 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:28:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash -333879653, now seen corresponding path program 25 times [2025-04-13 23:28:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:28:28,315 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784312416] [2025-04-13 23:28:28,315 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:28:28,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:28:28,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:28:28,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:28:28,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:28:28,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:28:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:28:28,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:28:28,436 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784312416] [2025-04-13 23:28:28,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784312416] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:28:28,436 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596173486] [2025-04-13 23:28:28,436 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:28:28,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:28:28,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:28:28,438 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 23:28:28,439 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 23:28:28,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:28:28,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:28:28,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:28:28,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:28:28,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:28:28,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:28:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:28:28,586 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:28:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:28:28,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596173486] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:28:28,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:28:28,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-04-13 23:28:28,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535120762] [2025-04-13 23:28:28,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:28:28,738 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 23:28:28,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:28:28,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 23:28:28,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2025-04-13 23:28:28,739 INFO L87 Difference]: Start difference. First operand 732 states and 2512 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:28:40,967 WARN L286 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 25 DAG size of output: 21 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 23:29:02,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:29:02,832 INFO L93 Difference]: Finished difference Result 1264 states and 3974 transitions. [2025-04-13 23:29:02,832 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 23:29:02,832 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2025-04-13 23:29:02,832 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:29:02,836 INFO L225 Difference]: With dead ends: 1264 [2025-04-13 23:29:02,836 INFO L226 Difference]: Without dead ends: 1257 [2025-04-13 23:29:02,836 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=483, Invalid=1679, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:29:02,837 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 240 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-04-13 23:29:02,837 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 0 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-04-13 23:29:02,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2025-04-13 23:29:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 726. [2025-04-13 23:29:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 3.4220689655172416) internal successors, (2481), 725 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:29:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 2481 transitions. [2025-04-13 23:29:03,132 INFO L79 Accepts]: Start accepts. Automaton has 726 states and 2481 transitions. Word has length 20 [2025-04-13 23:29:03,132 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:29:03,132 INFO L485 AbstractCegarLoop]: Abstraction has 726 states and 2481 transitions. [2025-04-13 23:29:03,132 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:29:03,132 INFO L278 IsEmpty]: Start isEmpty. Operand 726 states and 2481 transitions. [2025-04-13 23:29:03,133 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:29:03,133 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:29:03,133 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:29:03,139 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 23:29:03,333 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,SelfDestructingSolverStorable34 [2025-04-13 23:29:03,334 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 23:29:03,334 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:29:03,334 INFO L85 PathProgramCache]: Analyzing trace with hash -66614044, now seen corresponding path program 26 times [2025-04-13 23:29:03,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:29:03,334 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053680245] [2025-04-13 23:29:03,334 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:29:03,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:29:03,338 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:29:03,345 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:29:03,345 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:29:03,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:29:03,478 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 23:29:03,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:29:03,478 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053680245] [2025-04-13 23:29:03,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053680245] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:29:03,478 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505277177] [2025-04-13 23:29:03,478 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:29:03,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:29:03,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:29:03,480 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 23:29:03,481 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 23:29:03,528 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:29:03,541 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:29:03,542 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:29:03,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:29:03,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:29:03,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:29:03,633 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 23:29:03,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:29:03,818 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 23:29:03,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505277177] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:29:03,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:29:03,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 23:29:03,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765674062] [2025-04-13 23:29:03,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:29:03,818 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:29:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:29:03,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:29:03,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:29:03,819 INFO L87 Difference]: Start difference. First operand 726 states and 2481 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:29:05,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:29:05,853 INFO L93 Difference]: Finished difference Result 1118 states and 3507 transitions. [2025-04-13 23:29:05,853 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-04-13 23:29:05,853 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 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 20 [2025-04-13 23:29:05,853 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:29:05,856 INFO L225 Difference]: With dead ends: 1118 [2025-04-13 23:29:05,856 INFO L226 Difference]: Without dead ends: 1092 [2025-04-13 23:29:05,856 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=361, Invalid=1991, Unknown=0, NotChecked=0, Total=2352 [2025-04-13 23:29:05,857 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 131 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:29:05,857 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 0 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:29:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2025-04-13 23:29:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 802. [2025-04-13 23:29:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 3.4619225967540572) internal successors, (2773), 801 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:29:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2773 transitions. [2025-04-13 23:29:06,190 INFO L79 Accepts]: Start accepts. Automaton has 802 states and 2773 transitions. Word has length 20 [2025-04-13 23:29:06,190 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:29:06,190 INFO L485 AbstractCegarLoop]: Abstraction has 802 states and 2773 transitions. [2025-04-13 23:29:06,190 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:29:06,191 INFO L278 IsEmpty]: Start isEmpty. Operand 802 states and 2773 transitions. [2025-04-13 23:29:06,192 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:29:06,192 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:29:06,192 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:29:06,197 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 23:29:06,392 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,SelfDestructingSolverStorable35 [2025-04-13 23:29:06,392 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 23:29:06,393 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:29:06,393 INFO L85 PathProgramCache]: Analyzing trace with hash 359381059, now seen corresponding path program 27 times [2025-04-13 23:29:06,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:29:06,393 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600390557] [2025-04-13 23:29:06,393 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:29:06,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:29:06,396 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:29:06,405 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:29:06,405 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:29:06,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:29:06,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:29:06,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:29:06,514 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600390557] [2025-04-13 23:29:06,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600390557] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:29:06,514 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368282487] [2025-04-13 23:29:06,514 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:29:06,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:29:06,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:29:06,516 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 23:29:06,517 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 23:29:06,559 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:29:06,572 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:29:06,572 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:29:06,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:29:06,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:29:06,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:29:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:29:06,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:29:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:29:06,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368282487] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:29:06,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:29:06,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:29:06,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242796419] [2025-04-13 23:29:06,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:29:06,734 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:29:06,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:29:06,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:29:06,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:29:06,734 INFO L87 Difference]: Start difference. First operand 802 states and 2773 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:29:47,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:29:47,742 INFO L93 Difference]: Finished difference Result 1381 states and 4352 transitions. [2025-04-13 23:29:47,742 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-04-13 23:29:47,743 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 20 [2025-04-13 23:29:47,743 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:29:47,746 INFO L225 Difference]: With dead ends: 1381 [2025-04-13 23:29:47,747 INFO L226 Difference]: Without dead ends: 1364 [2025-04-13 23:29:47,748 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 39.2s TimeCoverageRelationStatistics Valid=688, Invalid=2970, Unknown=2, NotChecked=0, Total=3660 [2025-04-13 23:29:47,748 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 226 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:29:47,748 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 0 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 23:29:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2025-04-13 23:29:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 806. [2025-04-13 23:29:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 3.459627329192547) internal successors, (2785), 805 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:29:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2785 transitions. [2025-04-13 23:29:48,105 INFO L79 Accepts]: Start accepts. Automaton has 806 states and 2785 transitions. Word has length 20 [2025-04-13 23:29:48,105 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:29:48,105 INFO L485 AbstractCegarLoop]: Abstraction has 806 states and 2785 transitions. [2025-04-13 23:29:48,105 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:29:48,106 INFO L278 IsEmpty]: Start isEmpty. Operand 806 states and 2785 transitions. [2025-04-13 23:29:48,107 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:29:48,107 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:29:48,107 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:29:48,113 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 23:29:48,307 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:29:48,307 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 23:29:48,308 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:29:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1000077753, now seen corresponding path program 28 times [2025-04-13 23:29:48,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:29:48,308 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461949145] [2025-04-13 23:29:48,308 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:29:48,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:29:48,312 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:29:48,317 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:29:48,317 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:29:48,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:29:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:29:48,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:29:48,429 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461949145] [2025-04-13 23:29:48,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461949145] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:29:48,429 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548497428] [2025-04-13 23:29:48,429 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:29:48,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:29:48,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:29:48,430 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 23:29:48,431 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 23:29:48,517 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:29:48,532 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:29:48,532 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:29:48,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:29:48,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:29:48,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:29:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:29:48,630 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:29:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:29:48,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548497428] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:29:48,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:29:48,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:29:48,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446038994] [2025-04-13 23:29:48,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:29:48,761 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:29:48,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:29:48,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:29:48,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:29:48,762 INFO L87 Difference]: Start difference. First operand 806 states and 2785 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:29:53,987 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:29:58,804 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:30:05,278 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:30:06,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:30:06,611 INFO L93 Difference]: Finished difference Result 1055 states and 3288 transitions. [2025-04-13 23:30:06,611 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 23:30:06,611 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 20 [2025-04-13 23:30:06,611 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:30:06,614 INFO L225 Difference]: With dead ends: 1055 [2025-04-13 23:30:06,614 INFO L226 Difference]: Without dead ends: 1040 [2025-04-13 23:30:06,615 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=309, Invalid=1413, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 23:30:06,615 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 127 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:30:06,615 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 0 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 584 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2025-04-13 23:30:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2025-04-13 23:30:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 826. [2025-04-13 23:30:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 3.4775757575757575) internal successors, (2869), 825 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:30:06,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 2869 transitions. [2025-04-13 23:30:06,975 INFO L79 Accepts]: Start accepts. Automaton has 826 states and 2869 transitions. Word has length 20 [2025-04-13 23:30:06,975 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:30:06,975 INFO L485 AbstractCegarLoop]: Abstraction has 826 states and 2869 transitions. [2025-04-13 23:30:06,975 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:30:06,975 INFO L278 IsEmpty]: Start isEmpty. Operand 826 states and 2869 transitions. [2025-04-13 23:30:06,976 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:30:06,976 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:30:06,976 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:30:06,982 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 23:30:07,177 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,SelfDestructingSolverStorable37 [2025-04-13 23:30:07,177 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 23:30:07,177 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:30:07,177 INFO L85 PathProgramCache]: Analyzing trace with hash 389857252, now seen corresponding path program 29 times [2025-04-13 23:30:07,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:30:07,177 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407619040] [2025-04-13 23:30:07,177 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:30:07,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:30:07,181 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:30:07,189 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:30:07,189 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:30:07,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:30:07,300 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 23:30:07,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:30:07,300 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407619040] [2025-04-13 23:30:07,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407619040] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:30:07,300 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287028571] [2025-04-13 23:30:07,300 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:30:07,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:30:07,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:30:07,303 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 23:30:07,304 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 23:30:07,352 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:30:07,387 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:30:07,388 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:30:07,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:30:07,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:30:07,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:30:07,472 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 23:30:07,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:30:07,617 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 23:30:07,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287028571] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:30:07,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:30:07,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-04-13 23:30:07,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69546966] [2025-04-13 23:30:07,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:30:07,618 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 23:30:07,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:30:07,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 23:30:07,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:30:07,619 INFO L87 Difference]: Start difference. First operand 826 states and 2869 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 23:30:09,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:30:09,448 INFO L93 Difference]: Finished difference Result 1061 states and 3421 transitions. [2025-04-13 23:30:09,449 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 23:30:09,449 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 20 [2025-04-13 23:30:09,449 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:30:09,452 INFO L225 Difference]: With dead ends: 1061 [2025-04-13 23:30:09,452 INFO L226 Difference]: Without dead ends: 1047 [2025-04-13 23:30:09,454 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=1316, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 23:30:09,454 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 116 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:30:09,455 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 0 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:30:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2025-04-13 23:30:09,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 836. [2025-04-13 23:30:09,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 3.4850299401197606) internal successors, (2910), 835 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:30:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2910 transitions. [2025-04-13 23:30:09,820 INFO L79 Accepts]: Start accepts. Automaton has 836 states and 2910 transitions. Word has length 20 [2025-04-13 23:30:09,820 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:30:09,821 INFO L485 AbstractCegarLoop]: Abstraction has 836 states and 2910 transitions. [2025-04-13 23:30:09,821 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 23:30:09,821 INFO L278 IsEmpty]: Start isEmpty. Operand 836 states and 2910 transitions. [2025-04-13 23:30:09,822 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:30:09,822 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:30:09,822 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:30:09,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2025-04-13 23:30:10,022 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,SelfDestructingSolverStorable38 [2025-04-13 23:30:10,023 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 23:30:10,023 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:30:10,023 INFO L85 PathProgramCache]: Analyzing trace with hash -55315770, now seen corresponding path program 30 times [2025-04-13 23:30:10,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:30:10,023 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012310049] [2025-04-13 23:30:10,023 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:30:10,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:30:10,027 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:30:10,036 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:30:10,037 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:30:10,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:30:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:30:10,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:30:10,233 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012310049] [2025-04-13 23:30:10,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012310049] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:30:10,233 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558376828] [2025-04-13 23:30:10,233 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:30:10,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:30:10,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:30:10,235 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 23:30:10,235 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 23:30:10,281 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:30:10,297 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:30:10,297 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:30:10,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:30:10,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:30:10,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:30:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:30:10,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:30:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:30:10,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558376828] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:30:10,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:30:10,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2025-04-13 23:30:10,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221394335] [2025-04-13 23:30:10,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:30:10,568 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:30:10,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:30:10,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:30:10,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:30:10,569 INFO L87 Difference]: Start difference. First operand 836 states and 2910 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:30:15,078 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:30:19,483 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:30:21,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:30:21,076 INFO L93 Difference]: Finished difference Result 1193 states and 3833 transitions. [2025-04-13 23:30:21,076 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 23:30:21,076 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:30:21,077 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:30:21,080 INFO L225 Difference]: With dead ends: 1193 [2025-04-13 23:30:21,080 INFO L226 Difference]: Without dead ends: 1167 [2025-04-13 23:30:21,080 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=274, Invalid=1448, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 23:30:21,081 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 115 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:30:21,081 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 0 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 874 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2025-04-13 23:30:21,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2025-04-13 23:30:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 856. [2025-04-13 23:30:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 3.497076023391813) internal successors, (2990), 855 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:30:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2990 transitions. [2025-04-13 23:30:21,477 INFO L79 Accepts]: Start accepts. Automaton has 856 states and 2990 transitions. Word has length 20 [2025-04-13 23:30:21,477 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:30:21,477 INFO L485 AbstractCegarLoop]: Abstraction has 856 states and 2990 transitions. [2025-04-13 23:30:21,477 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:30:21,477 INFO L278 IsEmpty]: Start isEmpty. Operand 856 states and 2990 transitions. [2025-04-13 23:30:21,479 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:30:21,479 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:30:21,479 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:30:21,485 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 23:30:21,679 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-04-13 23:30:21,679 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 23:30:21,680 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:30:21,680 INFO L85 PathProgramCache]: Analyzing trace with hash 303969799, now seen corresponding path program 31 times [2025-04-13 23:30:21,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:30:21,680 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946874315] [2025-04-13 23:30:21,680 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:30:21,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:30:21,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:30:21,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:30:21,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:30:21,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:30:21,806 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 23:30:21,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:30:21,806 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946874315] [2025-04-13 23:30:21,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946874315] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:30:21,806 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719839492] [2025-04-13 23:30:21,806 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:30:21,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:30:21,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:30:21,808 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 23:30:21,809 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 23:30:21,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:30:21,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:30:21,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:30:21,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:30:21,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:30:21,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:30:21,911 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 23:30:21,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:30:22,023 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 23:30:22,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719839492] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:30:22,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:30:22,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-04-13 23:30:22,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751514714] [2025-04-13 23:30:22,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:30:22,024 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 23:30:22,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:30:22,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 23:30:22,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:30:22,025 INFO L87 Difference]: Start difference. First operand 856 states and 2990 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:30:56,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:30:56,614 INFO L93 Difference]: Finished difference Result 1451 states and 4692 transitions. [2025-04-13 23:30:56,614 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-04-13 23:30:56,615 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:30:56,615 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:30:56,619 INFO L225 Difference]: With dead ends: 1451 [2025-04-13 23:30:56,619 INFO L226 Difference]: Without dead ends: 1444 [2025-04-13 23:30:56,619 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=507, Invalid=1942, Unknown=1, NotChecked=0, Total=2450 [2025-04-13 23:30:56,619 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 238 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:30:56,620 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 0 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:30:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2025-04-13 23:30:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 848. [2025-04-13 23:30:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 3.489964580873672) internal successors, (2956), 847 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:30:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2956 transitions. [2025-04-13 23:30:57,001 INFO L79 Accepts]: Start accepts. Automaton has 848 states and 2956 transitions. Word has length 20 [2025-04-13 23:30:57,001 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:30:57,001 INFO L485 AbstractCegarLoop]: Abstraction has 848 states and 2956 transitions. [2025-04-13 23:30:57,001 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:30:57,001 INFO L278 IsEmpty]: Start isEmpty. Operand 848 states and 2956 transitions. [2025-04-13 23:30:57,002 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:30:57,002 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:30:57,002 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:30:57,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2025-04-13 23:30:57,202 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:30:57,203 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 23:30:57,203 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:30:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1577140483, now seen corresponding path program 32 times [2025-04-13 23:30:57,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:30:57,203 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714288539] [2025-04-13 23:30:57,203 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:30:57,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:30:57,207 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:30:57,215 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:30:57,215 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:30:57,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:30:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:30:57,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:30:57,337 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714288539] [2025-04-13 23:30:57,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714288539] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:30:57,337 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940064208] [2025-04-13 23:30:57,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:30:57,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:30:57,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:30:57,339 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 23:30:57,340 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 23:30:57,386 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:30:57,398 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:30:57,399 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:30:57,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:30:57,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:30:57,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:30:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:30:57,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:30:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:30:57,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940064208] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:30:57,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:30:57,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 23:30:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862537143] [2025-04-13 23:30:57,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:30:57,582 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:30:57,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:30:57,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:30:57,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:30:57,583 INFO L87 Difference]: Start difference. First operand 848 states and 2956 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:03,128 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:31:07,549 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:31:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:31:08,007 INFO L93 Difference]: Finished difference Result 1129 states and 3536 transitions. [2025-04-13 23:31:08,007 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 23:31:08,007 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 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 20 [2025-04-13 23:31:08,007 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:31:08,010 INFO L225 Difference]: With dead ends: 1129 [2025-04-13 23:31:08,010 INFO L226 Difference]: Without dead ends: 1110 [2025-04-13 23:31:08,010 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=375, Invalid=1605, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 23:31:08,010 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:31:08,010 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 0 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 830 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2025-04-13 23:31:08,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2025-04-13 23:31:08,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 864. [2025-04-13 23:31:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.492468134414832) internal successors, (3014), 863 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 3014 transitions. [2025-04-13 23:31:08,395 INFO L79 Accepts]: Start accepts. Automaton has 864 states and 3014 transitions. Word has length 20 [2025-04-13 23:31:08,395 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:31:08,395 INFO L485 AbstractCegarLoop]: Abstraction has 864 states and 3014 transitions. [2025-04-13 23:31:08,395 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:08,395 INFO L278 IsEmpty]: Start isEmpty. Operand 864 states and 3014 transitions. [2025-04-13 23:31:08,396 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:31:08,396 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:31:08,396 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:31:08,403 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 23:31:08,597 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:31:08,597 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 23:31:08,597 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:31:08,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2022313505, now seen corresponding path program 33 times [2025-04-13 23:31:08,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:31:08,597 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725561737] [2025-04-13 23:31:08,597 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:31:08,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:31:08,601 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:31:08,608 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:08,608 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:31:08,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:08,737 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 23:31:08,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:31:08,738 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725561737] [2025-04-13 23:31:08,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725561737] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:31:08,738 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439053978] [2025-04-13 23:31:08,738 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:31:08,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:31:08,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:31:08,744 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 23:31:08,745 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 23:31:08,791 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:31:08,807 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:08,807 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:31:08,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:08,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:31:08,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:31:08,852 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 23:31:08,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:31:09,015 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 23:31:09,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439053978] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:31:09,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:31:09,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-04-13 23:31:09,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612918535] [2025-04-13 23:31:09,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:31:09,016 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 23:31:09,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:31:09,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 23:31:09,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:31:09,016 INFO L87 Difference]: Start difference. First operand 864 states and 3014 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 23:31:23,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:31:23,466 INFO L93 Difference]: Finished difference Result 1389 states and 4580 transitions. [2025-04-13 23:31:23,466 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 23:31:23,466 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 20 [2025-04-13 23:31:23,466 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:31:23,469 INFO L225 Difference]: With dead ends: 1389 [2025-04-13 23:31:23,469 INFO L226 Difference]: Without dead ends: 1382 [2025-04-13 23:31:23,470 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 23:31:23,470 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:31:23,470 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 0 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:31:23,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2025-04-13 23:31:23,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 862. [2025-04-13 23:31:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 3.492450638792102) internal successors, (3007), 861 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 3007 transitions. [2025-04-13 23:31:23,902 INFO L79 Accepts]: Start accepts. Automaton has 862 states and 3007 transitions. Word has length 20 [2025-04-13 23:31:23,902 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:31:23,902 INFO L485 AbstractCegarLoop]: Abstraction has 862 states and 3007 transitions. [2025-04-13 23:31:23,902 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 23:31:23,902 INFO L278 IsEmpty]: Start isEmpty. Operand 862 states and 3007 transitions. [2025-04-13 23:31:23,903 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:31:23,903 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:31:23,903 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:31:23,909 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 23:31:24,104 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,SelfDestructingSolverStorable42 [2025-04-13 23:31:24,104 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 23:31:24,104 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:31:24,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1607616676, now seen corresponding path program 34 times [2025-04-13 23:31:24,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:31:24,104 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674533079] [2025-04-13 23:31:24,104 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:31:24,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:31:24,108 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:31:24,112 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:24,112 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:31:24,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:24,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:24,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:31:24,268 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674533079] [2025-04-13 23:31:24,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674533079] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:31:24,269 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408052251] [2025-04-13 23:31:24,269 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:31:24,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:31:24,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:31:24,270 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 23:31:24,271 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 23:31:24,323 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:31:24,336 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:24,336 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:31:24,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:24,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:31:24,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:31:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:24,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:31:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:24,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408052251] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:31:24,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:31:24,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 23:31:24,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030975452] [2025-04-13 23:31:24,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:31:24,610 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:31:24,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:31:24,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:31:24,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:31:24,611 INFO L87 Difference]: Start difference. First operand 862 states and 3007 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:31:27,603 INFO L93 Difference]: Finished difference Result 1295 states and 4009 transitions. [2025-04-13 23:31:27,604 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 23:31:27,604 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 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 20 [2025-04-13 23:31:27,604 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:31:27,607 INFO L225 Difference]: With dead ends: 1295 [2025-04-13 23:31:27,607 INFO L226 Difference]: Without dead ends: 1272 [2025-04-13 23:31:27,608 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=342, Invalid=1218, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 23:31:27,608 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 121 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:31:27,608 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 0 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 23:31:27,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2025-04-13 23:31:28,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 884. [2025-04-13 23:31:28,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 883 states have (on average 3.506228765571914) internal successors, (3096), 883 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:28,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 3096 transitions. [2025-04-13 23:31:28,051 INFO L79 Accepts]: Start accepts. Automaton has 884 states and 3096 transitions. Word has length 20 [2025-04-13 23:31:28,051 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:31:28,051 INFO L485 AbstractCegarLoop]: Abstraction has 884 states and 3096 transitions. [2025-04-13 23:31:28,051 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:28,051 INFO L278 IsEmpty]: Start isEmpty. Operand 884 states and 3096 transitions. [2025-04-13 23:31:28,053 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:31:28,053 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:31:28,053 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:31:28,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-04-13 23:31:28,253 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,SelfDestructingSolverStorable43 [2025-04-13 23:31:28,253 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 23:31:28,254 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:31:28,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1508177779, now seen corresponding path program 35 times [2025-04-13 23:31:28,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:31:28,254 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21601456] [2025-04-13 23:31:28,254 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:31:28,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:31:28,259 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:31:28,268 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:28,268 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:31:28,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:28,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:31:28,372 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21601456] [2025-04-13 23:31:28,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21601456] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:31:28,372 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8087136] [2025-04-13 23:31:28,373 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:31:28,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:31:28,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:31:28,374 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 23:31:28,375 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 23:31:28,423 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:31:28,494 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:28,494 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:31:28,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:28,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:31:28,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:31:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:28,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:31:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:28,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8087136] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:31:28,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:31:28,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 21 [2025-04-13 23:31:28,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044742948] [2025-04-13 23:31:28,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:31:28,736 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:31:28,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:31:28,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:31:28,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:31:28,736 INFO L87 Difference]: Start difference. First operand 884 states and 3096 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:34,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:31:34,928 INFO L93 Difference]: Finished difference Result 1116 states and 3623 transitions. [2025-04-13 23:31:34,928 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 23:31:34,928 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 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 20 [2025-04-13 23:31:34,928 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:31:34,931 INFO L225 Difference]: With dead ends: 1116 [2025-04-13 23:31:34,931 INFO L226 Difference]: Without dead ends: 1101 [2025-04-13 23:31:34,932 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=447, Invalid=1809, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 23:31:34,932 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 197 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:31:34,932 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 0 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:31:34,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2025-04-13 23:31:35,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 898. [2025-04-13 23:31:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 897 states have (on average 3.5128205128205128) internal successors, (3151), 897 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3151 transitions. [2025-04-13 23:31:35,424 INFO L79 Accepts]: Start accepts. Automaton has 898 states and 3151 transitions. Word has length 20 [2025-04-13 23:31:35,424 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:31:35,424 INFO L485 AbstractCegarLoop]: Abstraction has 898 states and 3151 transitions. [2025-04-13 23:31:35,425 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:35,425 INFO L278 IsEmpty]: Start isEmpty. Operand 898 states and 3151 transitions. [2025-04-13 23:31:35,426 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:31:35,426 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:31:35,426 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:31:35,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2025-04-13 23:31:35,627 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,SelfDestructingSolverStorable44 [2025-04-13 23:31:35,627 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 23:31:35,627 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:31:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1521729223, now seen corresponding path program 36 times [2025-04-13 23:31:35,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:31:35,628 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661323887] [2025-04-13 23:31:35,628 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:31:35,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:31:35,631 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 4 equivalence classes. [2025-04-13 23:31:35,639 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:35,639 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 23:31:35,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:35,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:31:35,756 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661323887] [2025-04-13 23:31:35,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661323887] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:31:35,756 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000170285] [2025-04-13 23:31:35,756 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:31:35,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:31:35,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:31:35,758 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 23:31:35,760 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 23:31:35,814 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 4 equivalence classes. [2025-04-13 23:31:35,846 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:35,847 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 23:31:35,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:35,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:31:35,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:31:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:35,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:31:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:36,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000170285] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:31:36,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:31:36,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:31:36,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019612168] [2025-04-13 23:31:36,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:31:36,120 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:31:36,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:31:36,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:31:36,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:31:36,121 INFO L87 Difference]: Start difference. First operand 898 states and 3151 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:31:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:31:40,758 INFO L93 Difference]: Finished difference Result 1119 states and 3596 transitions. [2025-04-13 23:31:40,759 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 23:31:40,759 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 20 [2025-04-13 23:31:40,759 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:31:40,762 INFO L225 Difference]: With dead ends: 1119 [2025-04-13 23:31:40,762 INFO L226 Difference]: Without dead ends: 1112 [2025-04-13 23:31:40,762 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 23:31:40,762 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 126 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:31:40,763 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 0 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:31:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2025-04-13 23:31:41,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 883. [2025-04-13 23:31:41,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 3.484126984126984) internal successors, (3073), 882 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:41,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 3073 transitions. [2025-04-13 23:31:41,223 INFO L79 Accepts]: Start accepts. Automaton has 883 states and 3073 transitions. Word has length 20 [2025-04-13 23:31:41,223 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:31:41,223 INFO L485 AbstractCegarLoop]: Abstraction has 883 states and 3073 transitions. [2025-04-13 23:31:41,223 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:31:41,223 INFO L278 IsEmpty]: Start isEmpty. Operand 883 states and 3073 transitions. [2025-04-13 23:31:41,224 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:31:41,224 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:31:41,224 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:31:41,230 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 23:31:41,425 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,SelfDestructingSolverStorable45 [2025-04-13 23:31:41,425 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 23:31:41,425 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:31:41,425 INFO L85 PathProgramCache]: Analyzing trace with hash 133120376, now seen corresponding path program 37 times [2025-04-13 23:31:41,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:31:41,425 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780291010] [2025-04-13 23:31:41,425 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:31:41,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:31:41,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:31:41,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:41,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:31:41,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:41,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:31:41,562 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780291010] [2025-04-13 23:31:41,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780291010] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:31:41,562 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816440882] [2025-04-13 23:31:41,562 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:31:41,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:31:41,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:31:41,564 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 23:31:41,565 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 23:31:41,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:31:41,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:41,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:31:41,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:41,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:31:41,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:31:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:41,761 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:31:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:41,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816440882] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:31:41,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:31:41,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 23:31:41,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883009062] [2025-04-13 23:31:41,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:31:41,930 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:31:41,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:31:41,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:31:41,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:31:41,931 INFO L87 Difference]: Start difference. First operand 883 states and 3073 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:44,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:31:44,495 INFO L93 Difference]: Finished difference Result 1150 states and 3770 transitions. [2025-04-13 23:31:44,495 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 23:31:44,496 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 20 [2025-04-13 23:31:44,496 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:31:44,498 INFO L225 Difference]: With dead ends: 1150 [2025-04-13 23:31:44,498 INFO L226 Difference]: Without dead ends: 1124 [2025-04-13 23:31:44,499 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=273, Invalid=1367, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 23:31:44,499 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 95 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:31:44,499 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 0 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 23:31:44,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2025-04-13 23:31:44,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 915. [2025-04-13 23:31:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 914 states have (on average 3.4934354485776806) internal successors, (3193), 914 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 3193 transitions. [2025-04-13 23:31:44,981 INFO L79 Accepts]: Start accepts. Automaton has 915 states and 3193 transitions. Word has length 20 [2025-04-13 23:31:44,981 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:31:44,981 INFO L485 AbstractCegarLoop]: Abstraction has 915 states and 3193 transitions. [2025-04-13 23:31:44,981 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:44,981 INFO L278 IsEmpty]: Start isEmpty. Operand 915 states and 3193 transitions. [2025-04-13 23:31:44,983 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:31:44,983 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:31:44,983 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:31:44,993 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 23:31:45,183 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:31:45,184 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 23:31:45,184 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:31:45,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1060782049, now seen corresponding path program 38 times [2025-04-13 23:31:45,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:31:45,184 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952365382] [2025-04-13 23:31:45,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:31:45,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:31:45,189 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:31:45,209 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:45,209 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:31:45,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:45,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:31:45,329 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952365382] [2025-04-13 23:31:45,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952365382] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:31:45,329 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993084593] [2025-04-13 23:31:45,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:31:45,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:31:45,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:31:45,331 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 23:31:45,332 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 23:31:45,380 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:31:45,393 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:45,394 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:31:45,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:45,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:31:45,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:31:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:45,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:31:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:45,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993084593] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:31:45,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:31:45,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:31:45,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641074897] [2025-04-13 23:31:45,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:31:45,590 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:31:45,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:31:45,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:31:45,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:31:45,591 INFO L87 Difference]: Start difference. First operand 915 states and 3193 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:31:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:31:53,880 INFO L93 Difference]: Finished difference Result 1060 states and 3506 transitions. [2025-04-13 23:31:53,881 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 23:31:53,881 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 20 [2025-04-13 23:31:53,881 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:31:53,883 INFO L225 Difference]: With dead ends: 1060 [2025-04-13 23:31:53,883 INFO L226 Difference]: Without dead ends: 1045 [2025-04-13 23:31:53,884 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=253, Invalid=1229, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 23:31:53,884 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 108 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:31:53,884 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 0 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:31:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2025-04-13 23:31:54,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 927. [2025-04-13 23:31:54,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 926 states have (on average 3.5043196544276456) internal successors, (3245), 926 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:31:54,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 3245 transitions. [2025-04-13 23:31:54,369 INFO L79 Accepts]: Start accepts. Automaton has 927 states and 3245 transitions. Word has length 20 [2025-04-13 23:31:54,369 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:31:54,369 INFO L485 AbstractCegarLoop]: Abstraction has 927 states and 3245 transitions. [2025-04-13 23:31:54,369 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:31:54,369 INFO L278 IsEmpty]: Start isEmpty. Operand 927 states and 3245 transitions. [2025-04-13 23:31:54,371 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:31:54,371 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:31:54,371 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:31:54,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2025-04-13 23:31:54,571 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,SelfDestructingSolverStorable47 [2025-04-13 23:31:54,571 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 23:31:54,571 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:31:54,572 INFO L85 PathProgramCache]: Analyzing trace with hash 729680825, now seen corresponding path program 39 times [2025-04-13 23:31:54,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:31:54,572 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617371173] [2025-04-13 23:31:54,572 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:31:54,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:31:54,576 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:31:54,585 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:54,585 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:31:54,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:54,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:31:54,689 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617371173] [2025-04-13 23:31:54,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617371173] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:31:54,689 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144944853] [2025-04-13 23:31:54,689 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:31:54,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:31:54,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:31:54,691 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 23:31:54,692 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 23:31:54,742 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:31:54,756 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:31:54,756 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:31:54,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:31:54,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:31:54,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:31:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:54,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:31:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:31:55,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144944853] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:31:55,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:31:55,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 23:31:55,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394518166] [2025-04-13 23:31:55,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:31:55,013 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:31:55,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:31:55,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:31:55,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:31:55,014 INFO L87 Difference]: Start difference. First operand 927 states and 3245 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:03,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:32:03,460 INFO L93 Difference]: Finished difference Result 1242 states and 3965 transitions. [2025-04-13 23:32:03,460 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 23:32:03,460 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:32:03,460 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:32:03,463 INFO L225 Difference]: With dead ends: 1242 [2025-04-13 23:32:03,463 INFO L226 Difference]: Without dead ends: 1231 [2025-04-13 23:32:03,464 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=406, Invalid=1756, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:32:03,464 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 155 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:32:03,464 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 0 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-04-13 23:32:03,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2025-04-13 23:32:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 933. [2025-04-13 23:32:03,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 932 states have (on average 3.504291845493562) internal successors, (3266), 932 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 3266 transitions. [2025-04-13 23:32:03,952 INFO L79 Accepts]: Start accepts. Automaton has 933 states and 3266 transitions. Word has length 20 [2025-04-13 23:32:03,952 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:32:03,952 INFO L485 AbstractCegarLoop]: Abstraction has 933 states and 3266 transitions. [2025-04-13 23:32:03,952 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:03,952 INFO L278 IsEmpty]: Start isEmpty. Operand 933 states and 3266 transitions. [2025-04-13 23:32:03,954 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:32:03,954 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:32:03,954 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:32:03,960 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 23:32:04,154 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,SelfDestructingSolverStorable48 [2025-04-13 23:32:04,154 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 23:32:04,155 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:32:04,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2005544032, now seen corresponding path program 40 times [2025-04-13 23:32:04,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:32:04,155 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063236883] [2025-04-13 23:32:04,155 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:32:04,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:32:04,159 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:32:04,164 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:32:04,164 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:32:04,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:32:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:04,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:32:04,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063236883] [2025-04-13 23:32:04,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063236883] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:32:04,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583860090] [2025-04-13 23:32:04,283 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:32:04,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:32:04,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:32:04,285 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 23:32:04,286 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 23:32:04,337 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:32:04,351 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:32:04,352 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:32:04,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:32:04,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:32:04,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:32:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:04,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:32:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:04,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583860090] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:32:04,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:32:04,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:32:04,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958050666] [2025-04-13 23:32:04,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:32:04,585 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:32:04,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:32:04,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:32:04,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:32:04,586 INFO L87 Difference]: Start difference. First operand 933 states and 3266 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:08,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:32:08,874 INFO L93 Difference]: Finished difference Result 1248 states and 4031 transitions. [2025-04-13 23:32:08,875 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 23:32:08,875 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:32:08,875 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:32:08,878 INFO L225 Difference]: With dead ends: 1248 [2025-04-13 23:32:08,878 INFO L226 Difference]: Without dead ends: 1225 [2025-04-13 23:32:08,878 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=274, Invalid=1366, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 23:32:08,878 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 118 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:32:08,878 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 0 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-04-13 23:32:08,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2025-04-13 23:32:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 939. [2025-04-13 23:32:09,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 938 states have (on average 3.5063965884861408) internal successors, (3289), 938 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 3289 transitions. [2025-04-13 23:32:09,414 INFO L79 Accepts]: Start accepts. Automaton has 939 states and 3289 transitions. Word has length 20 [2025-04-13 23:32:09,414 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:32:09,414 INFO L485 AbstractCegarLoop]: Abstraction has 939 states and 3289 transitions. [2025-04-13 23:32:09,414 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:09,414 INFO L278 IsEmpty]: Start isEmpty. Operand 939 states and 3289 transitions. [2025-04-13 23:32:09,416 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:32:09,416 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:32:09,416 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:32:09,423 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 23:32:09,616 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,SelfDestructingSolverStorable49 [2025-04-13 23:32:09,617 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 23:32:09,617 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:32:09,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1674442808, now seen corresponding path program 41 times [2025-04-13 23:32:09,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:32:09,617 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327273654] [2025-04-13 23:32:09,617 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:32:09,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:32:09,622 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:32:09,629 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:32:09,629 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:32:09,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:32:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:09,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:32:09,740 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327273654] [2025-04-13 23:32:09,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327273654] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:32:09,740 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450778298] [2025-04-13 23:32:09,740 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:32:09,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:32:09,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:32:09,742 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 23:32:09,744 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 23:32:09,796 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:32:09,885 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:32:09,885 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:32:09,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:32:09,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:32:09,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:32:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:09,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:32:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:10,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450778298] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:32:10,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:32:10,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 23:32:10,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411756663] [2025-04-13 23:32:10,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:32:10,141 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:32:10,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:32:10,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:32:10,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:32:10,142 INFO L87 Difference]: Start difference. First operand 939 states and 3289 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:13,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:32:13,385 INFO L93 Difference]: Finished difference Result 1287 states and 4211 transitions. [2025-04-13 23:32:13,385 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-04-13 23:32:13,385 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 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 20 [2025-04-13 23:32:13,385 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:32:13,389 INFO L225 Difference]: With dead ends: 1287 [2025-04-13 23:32:13,389 INFO L226 Difference]: Without dead ends: 1261 [2025-04-13 23:32:13,389 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=351, Invalid=1811, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 23:32:13,390 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:32:13,390 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 23:32:13,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2025-04-13 23:32:13,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 957. [2025-04-13 23:32:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.51255230125523) internal successors, (3358), 956 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3358 transitions. [2025-04-13 23:32:13,943 INFO L79 Accepts]: Start accepts. Automaton has 957 states and 3358 transitions. Word has length 20 [2025-04-13 23:32:13,943 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:32:13,943 INFO L485 AbstractCegarLoop]: Abstraction has 957 states and 3358 transitions. [2025-04-13 23:32:13,943 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:13,943 INFO L278 IsEmpty]: Start isEmpty. Operand 957 states and 3358 transitions. [2025-04-13 23:32:13,944 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:32:13,944 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:32:13,944 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:32:13,951 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 23:32:14,145 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:32:14,145 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 23:32:14,145 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:32:14,145 INFO L85 PathProgramCache]: Analyzing trace with hash -656967011, now seen corresponding path program 42 times [2025-04-13 23:32:14,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:32:14,145 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550480730] [2025-04-13 23:32:14,145 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:32:14,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:32:14,149 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:32:14,163 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:32:14,163 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:32:14,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:32:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:14,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:32:14,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550480730] [2025-04-13 23:32:14,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550480730] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:32:14,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428182578] [2025-04-13 23:32:14,283 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:32:14,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:32:14,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:32:14,285 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 23:32:14,286 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 23:32:14,341 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:32:14,358 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:32:14,358 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:32:14,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:32:14,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:32:14,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:32:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:14,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:32:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:14,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428182578] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:32:14,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:32:14,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-04-13 23:32:14,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544282970] [2025-04-13 23:32:14,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:32:14,555 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 23:32:14,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:32:14,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 23:32:14,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:32:14,556 INFO L87 Difference]: Start difference. First operand 957 states and 3358 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:32:17,167 INFO L93 Difference]: Finished difference Result 1131 states and 3730 transitions. [2025-04-13 23:32:17,167 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-13 23:32:17,168 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:32:17,168 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:32:17,171 INFO L225 Difference]: With dead ends: 1131 [2025-04-13 23:32:17,171 INFO L226 Difference]: Without dead ends: 1110 [2025-04-13 23:32:17,171 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=260, Invalid=1072, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 23:32:17,172 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 123 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:32:17,172 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 0 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:32:17,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2025-04-13 23:32:17,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 963. [2025-04-13 23:32:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.5103950103950106) internal successors, (3377), 962 states have internal predecessors, (3377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3377 transitions. [2025-04-13 23:32:17,768 INFO L79 Accepts]: Start accepts. Automaton has 963 states and 3377 transitions. Word has length 20 [2025-04-13 23:32:17,768 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:32:17,768 INFO L485 AbstractCegarLoop]: Abstraction has 963 states and 3377 transitions. [2025-04-13 23:32:17,768 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:17,768 INFO L278 IsEmpty]: Start isEmpty. Operand 963 states and 3377 transitions. [2025-04-13 23:32:17,770 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:32:17,770 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:32:17,770 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:32:17,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2025-04-13 23:32:17,970 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:32:17,970 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 23:32:17,971 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:32:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash -988068235, now seen corresponding path program 43 times [2025-04-13 23:32:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:32:17,971 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20977190] [2025-04-13 23:32:17,971 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:32:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:32:17,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:32:17,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:32:17,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:32:17,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:32:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:18,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:32:18,085 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20977190] [2025-04-13 23:32:18,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20977190] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:32:18,085 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853470730] [2025-04-13 23:32:18,085 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:32:18,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:32:18,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:32:18,089 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 23:32:18,090 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 23:32:18,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:32:18,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:32:18,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:32:18,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:32:18,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:32:18,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:32:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:18,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:32:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:18,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853470730] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:32:18,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:32:18,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:32:18,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206724851] [2025-04-13 23:32:18,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:32:18,356 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:32:18,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:32:18,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:32:18,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:32:18,356 INFO L87 Difference]: Start difference. First operand 963 states and 3377 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:33,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:32:33,251 INFO L93 Difference]: Finished difference Result 1362 states and 4347 transitions. [2025-04-13 23:32:33,251 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 23:32:33,251 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 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 20 [2025-04-13 23:32:33,251 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:32:33,254 INFO L225 Difference]: With dead ends: 1362 [2025-04-13 23:32:33,254 INFO L226 Difference]: Without dead ends: 1343 [2025-04-13 23:32:33,254 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=377, Invalid=1603, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 23:32:33,255 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:32:33,255 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 0 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 23:32:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2025-04-13 23:32:33,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 979. [2025-04-13 23:32:33,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 978 states have (on average 3.514314928425358) internal successors, (3437), 978 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:33,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 3437 transitions. [2025-04-13 23:32:33,789 INFO L79 Accepts]: Start accepts. Automaton has 979 states and 3437 transitions. Word has length 20 [2025-04-13 23:32:33,789 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:32:33,789 INFO L485 AbstractCegarLoop]: Abstraction has 979 states and 3437 transitions. [2025-04-13 23:32:33,789 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:33,790 INFO L278 IsEmpty]: Start isEmpty. Operand 979 states and 3437 transitions. [2025-04-13 23:32:33,791 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:32:33,791 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:32:33,791 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:32:33,798 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 23:32:33,991 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:32:33,992 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 23:32:33,992 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:32:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash -626490818, now seen corresponding path program 44 times [2025-04-13 23:32:33,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:32:33,992 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356302020] [2025-04-13 23:32:33,992 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:32:33,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:32:33,996 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:32:34,003 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:32:34,003 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:32:34,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:32:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:34,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:32:34,161 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356302020] [2025-04-13 23:32:34,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356302020] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:32:34,161 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492164470] [2025-04-13 23:32:34,161 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:32:34,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:32:34,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:32:34,163 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 23:32:34,164 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 23:32:34,217 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:32:34,231 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:32:34,231 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:32:34,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:32:34,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:32:34,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:32:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:34,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:32:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:32:34,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492164470] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:32:34,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:32:34,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2025-04-13 23:32:34,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214270306] [2025-04-13 23:32:34,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:32:34,482 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:32:34,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:32:34,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:32:34,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:32:34,483 INFO L87 Difference]: Start difference. First operand 979 states and 3437 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:49,112 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:32:56,014 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:32:59,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:32:59,073 INFO L93 Difference]: Finished difference Result 1220 states and 3993 transitions. [2025-04-13 23:32:59,073 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 23:32:59,073 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 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 20 [2025-04-13 23:32:59,073 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:32:59,076 INFO L225 Difference]: With dead ends: 1220 [2025-04-13 23:32:59,076 INFO L226 Difference]: Without dead ends: 1206 [2025-04-13 23:32:59,077 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=265, Invalid=995, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 23:32:59,077 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 99 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 32 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:32:59,077 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 0 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 708 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2025-04-13 23:32:59,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2025-04-13 23:32:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 993. [2025-04-13 23:32:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 3.5221774193548385) internal successors, (3494), 992 states have internal predecessors, (3494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 3494 transitions. [2025-04-13 23:32:59,690 INFO L79 Accepts]: Start accepts. Automaton has 993 states and 3494 transitions. Word has length 20 [2025-04-13 23:32:59,690 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:32:59,690 INFO L485 AbstractCegarLoop]: Abstraction has 993 states and 3494 transitions. [2025-04-13 23:32:59,690 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:32:59,690 INFO L278 IsEmpty]: Start isEmpty. Operand 993 states and 3494 transitions. [2025-04-13 23:32:59,692 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:32:59,692 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:32:59,692 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:32:59,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2025-04-13 23:32:59,892 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,SelfDestructingSolverStorable53 [2025-04-13 23:32:59,892 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 23:32:59,893 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:32:59,893 INFO L85 PathProgramCache]: Analyzing trace with hash -957592042, now seen corresponding path program 45 times [2025-04-13 23:32:59,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:32:59,893 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095440148] [2025-04-13 23:32:59,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:32:59,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:32:59,897 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:32:59,906 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:32:59,906 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:32:59,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:33:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:33:00,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:33:00,580 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095440148] [2025-04-13 23:33:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095440148] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:33:00,580 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357773604] [2025-04-13 23:33:00,580 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:33:00,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:33:00,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:33:00,582 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 23:33:00,583 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 23:33:00,637 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:33:00,666 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:33:00,666 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:33:00,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:33:00,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:33:00,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:33:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:33:00,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:33:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:33:01,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357773604] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:33:01,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:33:01,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2025-04-13 23:33:01,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231772927] [2025-04-13 23:33:01,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:33:01,094 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 23:33:01,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:33:01,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 23:33:01,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2025-04-13 23:33:01,095 INFO L87 Difference]: Start difference. First operand 993 states and 3494 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 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 23:33:05,832 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:33:09,930 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:33:16,272 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:33:24,069 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:33:28,321 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:33:31,947 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:33:38,667 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:33:49,997 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:33:54,160 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:33:55,713 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-04-13 23:33:58,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:33:58,644 INFO L93 Difference]: Finished difference Result 1671 states and 5442 transitions. [2025-04-13 23:33:58,644 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 23:33:58,644 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 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 20 [2025-04-13 23:33:58,645 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:33:58,648 INFO L225 Difference]: With dead ends: 1671 [2025-04-13 23:33:58,648 INFO L226 Difference]: Without dead ends: 1643 [2025-04-13 23:33:58,648 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=603, Invalid=3055, Unknown=2, NotChecked=0, Total=3660 [2025-04-13 23:33:58,648 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 63 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:33:58,648 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 0 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1293 Invalid, 6 Unknown, 0 Unchecked, 36.8s Time] [2025-04-13 23:33:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2025-04-13 23:33:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1207. [2025-04-13 23:33:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 3.541459369817579) internal successors, (4271), 1206 states have internal predecessors, (4271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:33:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 4271 transitions. [2025-04-13 23:33:59,339 INFO L79 Accepts]: Start accepts. Automaton has 1207 states and 4271 transitions. Word has length 20 [2025-04-13 23:33:59,339 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:33:59,339 INFO L485 AbstractCegarLoop]: Abstraction has 1207 states and 4271 transitions. [2025-04-13 23:33:59,339 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 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 23:33:59,339 INFO L278 IsEmpty]: Start isEmpty. Operand 1207 states and 4271 transitions. [2025-04-13 23:33:59,341 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:33:59,341 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:33:59,341 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:33:59,348 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 23:33:59,541 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,SelfDestructingSolverStorable54 [2025-04-13 23:33:59,541 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 23:33:59,542 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:33:59,542 INFO L85 PathProgramCache]: Analyzing trace with hash -712378271, now seen corresponding path program 46 times [2025-04-13 23:33:59,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:33:59,542 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012076707] [2025-04-13 23:33:59,542 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:33:59,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:33:59,545 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:33:59,550 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:33:59,550 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:33:59,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:33:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:33:59,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:33:59,666 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012076707] [2025-04-13 23:33:59,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012076707] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:33:59,666 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117872892] [2025-04-13 23:33:59,666 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:33:59,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:33:59,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:33:59,668 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 23:33:59,668 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 23:33:59,722 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:33:59,736 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:33:59,736 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:33:59,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:33:59,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:33:59,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:33:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:33:59,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:33:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:33:59,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117872892] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:33:59,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:33:59,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:33:59,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651618561] [2025-04-13 23:33:59,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:33:59,979 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:33:59,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:33:59,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:33:59,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:33:59,980 INFO L87 Difference]: Start difference. First operand 1207 states and 4271 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:34:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:34:02,609 INFO L93 Difference]: Finished difference Result 1360 states and 4572 transitions. [2025-04-13 23:34:02,609 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 23:34:02,610 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 20 [2025-04-13 23:34:02,610 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:34:02,613 INFO L225 Difference]: With dead ends: 1360 [2025-04-13 23:34:02,613 INFO L226 Difference]: Without dead ends: 1353 [2025-04-13 23:34:02,614 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 23:34:02,614 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 121 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:34:02,614 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 0 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:34:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2025-04-13 23:34:03,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1195. [2025-04-13 23:34:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 3.5284757118927974) internal successors, (4213), 1194 states have internal predecessors, (4213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:34:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 4213 transitions. [2025-04-13 23:34:03,381 INFO L79 Accepts]: Start accepts. Automaton has 1195 states and 4213 transitions. Word has length 20 [2025-04-13 23:34:03,381 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:34:03,381 INFO L485 AbstractCegarLoop]: Abstraction has 1195 states and 4213 transitions. [2025-04-13 23:34:03,381 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:34:03,381 INFO L278 IsEmpty]: Start isEmpty. Operand 1195 states and 4213 transitions. [2025-04-13 23:34:03,383 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:34:03,383 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:34:03,383 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:34:03,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2025-04-13 23:34:03,583 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,SelfDestructingSolverStorable55 [2025-04-13 23:34:03,583 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 23:34:03,584 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:34:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash -971822643, now seen corresponding path program 47 times [2025-04-13 23:34:03,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:34:03,584 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567175624] [2025-04-13 23:34:03,584 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:34:03,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:34:03,588 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:34:03,593 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:34:03,593 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:34:03,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:34:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:03,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:34:03,696 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567175624] [2025-04-13 23:34:03,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567175624] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:34:03,696 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050417229] [2025-04-13 23:34:03,696 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:34:03,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:34:03,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:34:03,698 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 23:34:03,699 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 23:34:03,751 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:34:03,789 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:34:03,789 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:34:03,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:34:03,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:34:03,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:34:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:03,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:34:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:04,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050417229] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:34:04,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:34:04,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:34:04,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801116103] [2025-04-13 23:34:04,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:34:04,006 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:34:04,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:34:04,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:34:04,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:34:04,006 INFO L87 Difference]: Start difference. First operand 1195 states and 4213 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:34:11,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:34:11,651 INFO L93 Difference]: Finished difference Result 1463 states and 4869 transitions. [2025-04-13 23:34:11,651 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 23:34:11,652 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 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 20 [2025-04-13 23:34:11,652 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:34:11,654 INFO L225 Difference]: With dead ends: 1463 [2025-04-13 23:34:11,655 INFO L226 Difference]: Without dead ends: 1452 [2025-04-13 23:34:11,655 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=311, Invalid=1495, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 23:34:11,655 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:34:11,655 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:34:11,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2025-04-13 23:34:12,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1195. [2025-04-13 23:34:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1194 states have (on average 3.530150753768844) internal successors, (4215), 1194 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:34:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 4215 transitions. [2025-04-13 23:34:12,380 INFO L79 Accepts]: Start accepts. Automaton has 1195 states and 4215 transitions. Word has length 20 [2025-04-13 23:34:12,380 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:34:12,380 INFO L485 AbstractCegarLoop]: Abstraction has 1195 states and 4215 transitions. [2025-04-13 23:34:12,380 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:34:12,380 INFO L278 IsEmpty]: Start isEmpty. Operand 1195 states and 4215 transitions. [2025-04-13 23:34:12,382 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:34:12,382 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:34:12,382 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:34:12,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2025-04-13 23:34:12,582 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,SelfDestructingSolverStorable56 [2025-04-13 23:34:12,583 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 23:34:12,583 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:34:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1072080323, now seen corresponding path program 48 times [2025-04-13 23:34:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:34:12,583 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926849131] [2025-04-13 23:34:12,584 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:34:12,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:34:12,587 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:34:12,592 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:34:12,592 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:34:12,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:34:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:12,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:34:12,692 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926849131] [2025-04-13 23:34:12,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926849131] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:34:12,692 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457134191] [2025-04-13 23:34:12,692 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:34:12,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:34:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:34:12,694 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 23:34:12,694 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 23:34:12,746 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:34:12,797 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:34:12,797 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:34:12,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:34:12,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:34:12,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:34:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:12,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:34:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:13,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457134191] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:34:13,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:34:13,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:34:13,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818145458] [2025-04-13 23:34:13,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:34:13,022 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:34:13,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:34:13,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:34:13,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:34:13,023 INFO L87 Difference]: Start difference. First operand 1195 states and 4215 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:34:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:34:16,428 INFO L93 Difference]: Finished difference Result 1410 states and 4673 transitions. [2025-04-13 23:34:16,428 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-04-13 23:34:16,428 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 20 [2025-04-13 23:34:16,429 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:34:16,431 INFO L225 Difference]: With dead ends: 1410 [2025-04-13 23:34:16,431 INFO L226 Difference]: Without dead ends: 1389 [2025-04-13 23:34:16,432 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=506, Invalid=2044, Unknown=0, NotChecked=0, Total=2550 [2025-04-13 23:34:16,432 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:34:16,432 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 0 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:34:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2025-04-13 23:34:17,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1203. [2025-04-13 23:34:17,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 3.5366056572379367) internal successors, (4251), 1202 states have internal predecessors, (4251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:34:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 4251 transitions. [2025-04-13 23:34:17,130 INFO L79 Accepts]: Start accepts. Automaton has 1203 states and 4251 transitions. Word has length 20 [2025-04-13 23:34:17,130 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:34:17,130 INFO L485 AbstractCegarLoop]: Abstraction has 1203 states and 4251 transitions. [2025-04-13 23:34:17,130 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:34:17,131 INFO L278 IsEmpty]: Start isEmpty. Operand 1203 states and 4251 transitions. [2025-04-13 23:34:17,132 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:34:17,132 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:34:17,132 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:34:17,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2025-04-13 23:34:17,333 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,SelfDestructingSolverStorable57 [2025-04-13 23:34:17,333 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 23:34:17,333 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:34:17,333 INFO L85 PathProgramCache]: Analyzing trace with hash -27060660, now seen corresponding path program 49 times [2025-04-13 23:34:17,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:34:17,333 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800076339] [2025-04-13 23:34:17,333 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:34:17,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:34:17,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:34:17,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:34:17,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:34:17,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:34:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:17,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:34:17,520 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800076339] [2025-04-13 23:34:17,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800076339] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:34:17,520 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752260162] [2025-04-13 23:34:17,520 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:34:17,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:34:17,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:34:17,522 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 23:34:17,524 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 23:34:17,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:34:17,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:34:17,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:34:17,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:34:17,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:34:17,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:34:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:17,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:34:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752260162] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:34:17,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:34:17,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:34:17,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112634531] [2025-04-13 23:34:17,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:34:17,929 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:34:17,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:34:17,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:34:17,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:34:17,929 INFO L87 Difference]: Start difference. First operand 1203 states and 4251 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:34:25,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:34:25,381 INFO L93 Difference]: Finished difference Result 1451 states and 4838 transitions. [2025-04-13 23:34:25,381 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 23:34:25,382 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:34:25,382 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:34:25,385 INFO L225 Difference]: With dead ends: 1451 [2025-04-13 23:34:25,385 INFO L226 Difference]: Without dead ends: 1437 [2025-04-13 23:34:25,385 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=295, Invalid=1685, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 23:34:25,385 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 126 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:34:25,386 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 0 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 23:34:25,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2025-04-13 23:34:26,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1211. [2025-04-13 23:34:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1210 states have (on average 3.53801652892562) internal successors, (4281), 1210 states have internal predecessors, (4281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:34:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 4281 transitions. [2025-04-13 23:34:26,115 INFO L79 Accepts]: Start accepts. Automaton has 1211 states and 4281 transitions. Word has length 20 [2025-04-13 23:34:26,115 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:34:26,115 INFO L485 AbstractCegarLoop]: Abstraction has 1211 states and 4281 transitions. [2025-04-13 23:34:26,115 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:34:26,115 INFO L278 IsEmpty]: Start isEmpty. Operand 1211 states and 4281 transitions. [2025-04-13 23:34:26,117 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:34:26,117 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:34:26,117 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:34:26,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2025-04-13 23:34:26,317 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,SelfDestructingSolverStorable58 [2025-04-13 23:34:26,317 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 23:34:26,318 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:34:26,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1102556516, now seen corresponding path program 50 times [2025-04-13 23:34:26,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:34:26,318 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794382516] [2025-04-13 23:34:26,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:34:26,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:34:26,322 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:34:26,328 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:34:26,328 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:34:26,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:34:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:26,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:34:26,502 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794382516] [2025-04-13 23:34:26,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794382516] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:34:26,503 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660667822] [2025-04-13 23:34:26,503 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:34:26,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:34:26,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:34:26,504 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 23:34:26,505 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 23:34:26,558 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:34:26,572 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:34:26,572 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:34:26,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:34:26,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:34:26,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:34:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:26,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:34:26,798 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:26,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660667822] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:34:26,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:34:26,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2025-04-13 23:34:26,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384970207] [2025-04-13 23:34:26,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:34:26,798 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 23:34:26,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:34:26,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 23:34:26,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:34:26,799 INFO L87 Difference]: Start difference. First operand 1211 states and 4281 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 23:34:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:34:31,065 INFO L93 Difference]: Finished difference Result 1402 states and 4700 transitions. [2025-04-13 23:34:31,065 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 23:34:31,065 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 20 [2025-04-13 23:34:31,065 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:34:31,068 INFO L225 Difference]: With dead ends: 1402 [2025-04-13 23:34:31,068 INFO L226 Difference]: Without dead ends: 1382 [2025-04-13 23:34:31,068 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2025-04-13 23:34:31,068 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:34:31,068 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:34:31,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2025-04-13 23:34:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1219. [2025-04-13 23:34:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 3.539408866995074) internal successors, (4311), 1218 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:34:31,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 4311 transitions. [2025-04-13 23:34:31,763 INFO L79 Accepts]: Start accepts. Automaton has 1219 states and 4311 transitions. Word has length 20 [2025-04-13 23:34:31,763 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:34:31,763 INFO L485 AbstractCegarLoop]: Abstraction has 1219 states and 4311 transitions. [2025-04-13 23:34:31,763 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 23:34:31,763 INFO L278 IsEmpty]: Start isEmpty. Operand 1219 states and 4311 transitions. [2025-04-13 23:34:31,765 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:34:31,765 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:34:31,765 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:34:31,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2025-04-13 23:34:31,965 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:34:31,965 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 23:34:31,966 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:34:31,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1605395593, now seen corresponding path program 51 times [2025-04-13 23:34:31,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:34:31,966 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156361664] [2025-04-13 23:34:31,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:34:31,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:34:31,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:34:31,975 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 20 statements. [2025-04-13 23:34:31,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:34:31,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:34:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 23:34:32,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:34:32,273 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156361664] [2025-04-13 23:34:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156361664] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:34:32,273 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314741202] [2025-04-13 23:34:32,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:34:32,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:34:32,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:34:32,274 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 23:34:32,276 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 23:34:32,331 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:34:32,373 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 20 statements. [2025-04-13 23:34:32,373 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 23:34:32,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:34:32,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 23:34:32,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:34:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 23:34:32,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:34:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 23:34:32,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314741202] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:34:32,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:34:32,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-04-13 23:34:32,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546718854] [2025-04-13 23:34:32,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:34:32,889 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:34:32,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:34:32,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:34:32,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:34:32,890 INFO L87 Difference]: Start difference. First operand 1219 states and 4311 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 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 23:34:47,274 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-13 23:34:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:34:53,419 INFO L93 Difference]: Finished difference Result 2167 states and 7637 transitions. [2025-04-13 23:34:53,420 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 23:34:53,420 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 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 20 [2025-04-13 23:34:53,420 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:34:53,424 INFO L225 Difference]: With dead ends: 2167 [2025-04-13 23:34:53,424 INFO L226 Difference]: Without dead ends: 2129 [2025-04-13 23:34:53,424 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2025-04-13 23:34:53,424 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:34:53,424 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 0 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 470 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2025-04-13 23:34:53,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2025-04-13 23:34:54,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1546. [2025-04-13 23:34:54,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1546 states, 1545 states have (on average 3.304854368932039) internal successors, (5106), 1545 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:34:54,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 5106 transitions. [2025-04-13 23:34:54,674 INFO L79 Accepts]: Start accepts. Automaton has 1546 states and 5106 transitions. Word has length 20 [2025-04-13 23:34:54,674 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:34:54,674 INFO L485 AbstractCegarLoop]: Abstraction has 1546 states and 5106 transitions. [2025-04-13 23:34:54,674 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 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 23:34:54,674 INFO L278 IsEmpty]: Start isEmpty. Operand 1546 states and 5106 transitions. [2025-04-13 23:34:54,676 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:34:54,676 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:34:54,676 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:34:54,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2025-04-13 23:34:54,876 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:34:54,877 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 23:34:54,877 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:34:54,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1262408658, now seen corresponding path program 52 times [2025-04-13 23:34:54,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:34:54,877 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800933069] [2025-04-13 23:34:54,877 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:34:54,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:34:54,881 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:34:54,885 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:34:54,885 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:34:54,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:34:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:55,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:34:55,018 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800933069] [2025-04-13 23:34:55,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800933069] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:34:55,018 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264860523] [2025-04-13 23:34:55,018 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:34:55,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:34:55,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:34:55,020 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 23:34:55,023 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 23:34:55,085 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:34:55,100 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:34:55,100 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:34:55,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:34:55,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:34:55,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:34:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:55,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:34:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:34:55,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264860523] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:34:55,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:34:55,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:34:55,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087923111] [2025-04-13 23:34:55,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:34:55,311 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:34:55,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:34:55,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:34:55,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:34:55,311 INFO L87 Difference]: Start difference. First operand 1546 states and 5106 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:34:59,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:34:59,204 INFO L93 Difference]: Finished difference Result 1756 states and 5587 transitions. [2025-04-13 23:34:59,205 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 23:34:59,205 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:34:59,205 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:34:59,208 INFO L225 Difference]: With dead ends: 1756 [2025-04-13 23:34:59,208 INFO L226 Difference]: Without dead ends: 1742 [2025-04-13 23:34:59,208 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=290, Invalid=1350, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 23:34:59,208 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:34:59,209 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 0 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:34:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2025-04-13 23:35:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1552. [2025-04-13 23:35:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1551 states have (on average 3.303030303030303) internal successors, (5123), 1551 states have internal predecessors, (5123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:00,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 5123 transitions. [2025-04-13 23:35:00,484 INFO L79 Accepts]: Start accepts. Automaton has 1552 states and 5123 transitions. Word has length 20 [2025-04-13 23:35:00,484 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:35:00,484 INFO L485 AbstractCegarLoop]: Abstraction has 1552 states and 5123 transitions. [2025-04-13 23:35:00,484 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:00,484 INFO L278 IsEmpty]: Start isEmpty. Operand 1552 states and 5123 transitions. [2025-04-13 23:35:00,486 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:35:00,486 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:35:00,486 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:35:00,492 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 23:35:00,686 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:35:00,686 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 23:35:00,687 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:35:00,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1522368076, now seen corresponding path program 53 times [2025-04-13 23:35:00,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:35:00,687 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617419798] [2025-04-13 23:35:00,687 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:35:00,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:35:00,690 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:35:00,697 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:00,697 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:35:00,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:00,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:35:00,815 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617419798] [2025-04-13 23:35:00,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617419798] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:35:00,816 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094366742] [2025-04-13 23:35:00,816 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:35:00,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:35:00,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:35:00,817 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 23:35:00,819 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 23:35:00,879 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:35:00,924 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:00,924 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:35:00,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:00,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:35:00,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:35:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:00,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:35:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:01,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094366742] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:35:01,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:35:01,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-04-13 23:35:01,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798804164] [2025-04-13 23:35:01,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:35:01,103 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 23:35:01,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:35:01,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 23:35:01,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2025-04-13 23:35:01,104 INFO L87 Difference]: Start difference. First operand 1552 states and 5123 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:35:05,020 INFO L93 Difference]: Finished difference Result 1713 states and 5431 transitions. [2025-04-13 23:35:05,020 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 23:35:05,020 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2025-04-13 23:35:05,020 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:35:05,023 INFO L225 Difference]: With dead ends: 1713 [2025-04-13 23:35:05,023 INFO L226 Difference]: Without dead ends: 1696 [2025-04-13 23:35:05,023 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=290, Invalid=1432, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 23:35:05,024 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:35:05,024 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:35:05,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2025-04-13 23:35:06,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1552. [2025-04-13 23:35:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1551 states have (on average 3.3004513217279174) internal successors, (5119), 1551 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:06,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 5119 transitions. [2025-04-13 23:35:06,467 INFO L79 Accepts]: Start accepts. Automaton has 1552 states and 5119 transitions. Word has length 20 [2025-04-13 23:35:06,467 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:35:06,467 INFO L485 AbstractCegarLoop]: Abstraction has 1552 states and 5119 transitions. [2025-04-13 23:35:06,467 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:06,467 INFO L278 IsEmpty]: Start isEmpty. Operand 1552 states and 5119 transitions. [2025-04-13 23:35:06,469 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:35:06,469 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:35:06,469 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:35:06,476 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 23:35:06,669 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,SelfDestructingSolverStorable62 [2025-04-13 23:35:06,670 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 23:35:06,670 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:35:06,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1303511304, now seen corresponding path program 54 times [2025-04-13 23:35:06,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:35:06,670 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476087465] [2025-04-13 23:35:06,670 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:35:06,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:35:06,674 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:35:06,683 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:06,683 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:35:06,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:06,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:35:06,904 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476087465] [2025-04-13 23:35:06,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476087465] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:35:06,904 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230158088] [2025-04-13 23:35:06,904 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:35:06,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:35:06,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:35:06,906 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 23:35:06,906 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 23:35:06,964 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:35:06,980 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:06,980 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:35:06,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:06,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:35:06,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:35:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:07,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:35:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:07,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230158088] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:35:07,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:35:07,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2025-04-13 23:35:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730472791] [2025-04-13 23:35:07,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:35:07,224 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:35:07,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:35:07,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:35:07,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:35:07,225 INFO L87 Difference]: Start difference. First operand 1552 states and 5119 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:10,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:35:10,700 INFO L93 Difference]: Finished difference Result 1719 states and 5528 transitions. [2025-04-13 23:35:10,701 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 23:35:10,701 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:35:10,701 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:35:10,704 INFO L225 Difference]: With dead ends: 1719 [2025-04-13 23:35:10,704 INFO L226 Difference]: Without dead ends: 1705 [2025-04-13 23:35:10,704 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 23:35:10,704 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:35:10,704 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:35:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2025-04-13 23:35:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1560. [2025-04-13 23:35:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1559 states have (on average 3.300192431045542) internal successors, (5145), 1559 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:12,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 5145 transitions. [2025-04-13 23:35:12,005 INFO L79 Accepts]: Start accepts. Automaton has 1560 states and 5145 transitions. Word has length 20 [2025-04-13 23:35:12,005 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:35:12,005 INFO L485 AbstractCegarLoop]: Abstraction has 1560 states and 5145 transitions. [2025-04-13 23:35:12,005 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:12,006 INFO L278 IsEmpty]: Start isEmpty. Operand 1560 states and 5145 transitions. [2025-04-13 23:35:12,007 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:35:12,007 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:35:12,007 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:35:12,014 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 23:35:12,207 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,SelfDestructingSolverStorable63 [2025-04-13 23:35:12,208 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 23:35:12,208 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:35:12,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1043551886, now seen corresponding path program 55 times [2025-04-13 23:35:12,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:35:12,208 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319481061] [2025-04-13 23:35:12,208 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:35:12,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:35:12,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:35:12,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:12,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:35:12,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:12,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:35:12,337 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319481061] [2025-04-13 23:35:12,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319481061] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:35:12,337 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804173995] [2025-04-13 23:35:12,337 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:35:12,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:35:12,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:35:12,339 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 23:35:12,339 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 23:35:12,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:35:12,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:12,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:35:12,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:12,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:35:12,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:35:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:12,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:35:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:12,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804173995] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:35:12,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:35:12,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-04-13 23:35:12,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974346416] [2025-04-13 23:35:12,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:35:12,612 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 23:35:12,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:35:12,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 23:35:12,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2025-04-13 23:35:12,612 INFO L87 Difference]: Start difference. First operand 1560 states and 5145 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:18,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:35:18,996 INFO L93 Difference]: Finished difference Result 1707 states and 5413 transitions. [2025-04-13 23:35:18,997 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 23:35:18,997 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2025-04-13 23:35:18,997 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:35:19,000 INFO L225 Difference]: With dead ends: 1707 [2025-04-13 23:35:19,000 INFO L226 Difference]: Without dead ends: 1690 [2025-04-13 23:35:19,001 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=262, Invalid=1220, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 23:35:19,001 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:35:19,001 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:35:19,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2025-04-13 23:35:20,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1560. [2025-04-13 23:35:20,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1559 states have (on average 3.2976266837716484) internal successors, (5141), 1559 states have internal predecessors, (5141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 5141 transitions. [2025-04-13 23:35:20,241 INFO L79 Accepts]: Start accepts. Automaton has 1560 states and 5141 transitions. Word has length 20 [2025-04-13 23:35:20,241 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:35:20,241 INFO L485 AbstractCegarLoop]: Abstraction has 1560 states and 5141 transitions. [2025-04-13 23:35:20,241 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:20,241 INFO L278 IsEmpty]: Start isEmpty. Operand 1560 states and 5141 transitions. [2025-04-13 23:35:20,243 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:35:20,243 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:35:20,243 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:35:20,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2025-04-13 23:35:20,443 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:35:20,443 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 23:35:20,443 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:35:20,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1846834236, now seen corresponding path program 56 times [2025-04-13 23:35:20,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:35:20,443 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533762669] [2025-04-13 23:35:20,443 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:35:20,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:35:20,447 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:35:20,451 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:20,451 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:35:20,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:20,558 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 23:35:20,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:35:20,558 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533762669] [2025-04-13 23:35:20,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533762669] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:35:20,558 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645507026] [2025-04-13 23:35:20,558 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:35:20,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:35:20,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:35:20,560 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 23:35:20,561 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 23:35:20,616 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:35:20,629 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:20,630 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:35:20,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:20,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:35:20,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:35:20,719 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 23:35:20,719 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:35:20,813 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 23:35:20,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645507026] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:35:20,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:35:20,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-04-13 23:35:20,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489191302] [2025-04-13 23:35:20,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:35:20,813 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 23:35:20,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:35:20,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 23:35:20,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:35:20,814 INFO L87 Difference]: Start difference. First operand 1560 states and 5141 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:24,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:35:24,624 INFO L93 Difference]: Finished difference Result 2272 states and 7417 transitions. [2025-04-13 23:35:24,625 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 23:35:24,625 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 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 20 [2025-04-13 23:35:24,625 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:35:24,629 INFO L225 Difference]: With dead ends: 2272 [2025-04-13 23:35:24,629 INFO L226 Difference]: Without dead ends: 2258 [2025-04-13 23:35:24,629 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2025-04-13 23:35:24,629 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 109 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 23:35:24,630 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 0 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 23:35:24,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2025-04-13 23:35:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1564. [2025-04-13 23:35:25,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1563 states have (on average 3.3007037747920664) internal successors, (5159), 1563 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 5159 transitions. [2025-04-13 23:35:25,970 INFO L79 Accepts]: Start accepts. Automaton has 1564 states and 5159 transitions. Word has length 20 [2025-04-13 23:35:25,970 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:35:25,970 INFO L485 AbstractCegarLoop]: Abstraction has 1564 states and 5159 transitions. [2025-04-13 23:35:25,970 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:25,970 INFO L278 IsEmpty]: Start isEmpty. Operand 1564 states and 5159 transitions. [2025-04-13 23:35:25,972 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:35:25,972 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:35:25,972 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:35:25,979 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 23:35:26,172 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:35:26,172 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 23:35:26,173 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:35:26,173 INFO L85 PathProgramCache]: Analyzing trace with hash 877654652, now seen corresponding path program 57 times [2025-04-13 23:35:26,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:35:26,173 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433648361] [2025-04-13 23:35:26,173 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:35:26,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:35:26,177 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:35:26,183 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:26,183 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:35:26,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:26,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:35:26,404 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433648361] [2025-04-13 23:35:26,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433648361] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:35:26,404 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840123713] [2025-04-13 23:35:26,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:35:26,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:35:26,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:35:26,406 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 23:35:26,407 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 23:35:26,462 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:35:26,493 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:26,494 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:35:26,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:26,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:35:26,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:35:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:26,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:35:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:26,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840123713] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:35:26,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:35:26,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2025-04-13 23:35:26,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542605829] [2025-04-13 23:35:26,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:35:26,800 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 23:35:26,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:35:26,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 23:35:26,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2025-04-13 23:35:26,800 INFO L87 Difference]: Start difference. First operand 1564 states and 5159 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:33,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:35:33,244 INFO L93 Difference]: Finished difference Result 2272 states and 7209 transitions. [2025-04-13 23:35:33,244 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 23:35:33,244 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 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 20 [2025-04-13 23:35:33,245 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:35:33,249 INFO L225 Difference]: With dead ends: 2272 [2025-04-13 23:35:33,249 INFO L226 Difference]: Without dead ends: 2255 [2025-04-13 23:35:33,249 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=665, Invalid=2641, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 23:35:33,250 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 211 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:35:33,250 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 0 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:35:33,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2025-04-13 23:35:34,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 1632. [2025-04-13 23:35:34,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 3.3090128755364807) internal successors, (5397), 1631 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:34,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 5397 transitions. [2025-04-13 23:35:34,726 INFO L79 Accepts]: Start accepts. Automaton has 1632 states and 5397 transitions. Word has length 20 [2025-04-13 23:35:34,726 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:35:34,726 INFO L485 AbstractCegarLoop]: Abstraction has 1632 states and 5397 transitions. [2025-04-13 23:35:34,726 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:34,726 INFO L278 IsEmpty]: Start isEmpty. Operand 1632 states and 5397 transitions. [2025-04-13 23:35:34,728 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:35:34,728 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:35:34,728 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:35:34,734 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 23:35:34,928 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,SelfDestructingSolverStorable66 [2025-04-13 23:35:34,928 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 23:35:34,929 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:35:34,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1227901146, now seen corresponding path program 58 times [2025-04-13 23:35:34,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:35:34,929 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96405450] [2025-04-13 23:35:34,929 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:35:34,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:35:34,932 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:35:34,936 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:34,936 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:35:34,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:35,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:35:35,050 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96405450] [2025-04-13 23:35:35,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96405450] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:35:35,050 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382059458] [2025-04-13 23:35:35,050 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:35:35,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:35:35,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:35:35,051 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:35:35,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2025-04-13 23:35:35,110 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:35:35,125 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:35,125 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:35:35,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:35,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:35:35,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:35:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:35,210 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:35:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:35,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382059458] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:35:35,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:35:35,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 23:35:35,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300930954] [2025-04-13 23:35:35,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:35:35,339 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:35:35,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:35:35,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:35:35,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:35:35,339 INFO L87 Difference]: Start difference. First operand 1632 states and 5397 transitions. Second operand has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:42,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:35:42,742 INFO L93 Difference]: Finished difference Result 2754 states and 8764 transitions. [2025-04-13 23:35:42,742 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-04-13 23:35:42,743 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 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 20 [2025-04-13 23:35:42,743 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:35:42,751 INFO L225 Difference]: With dead ends: 2754 [2025-04-13 23:35:42,751 INFO L226 Difference]: Without dead ends: 2737 [2025-04-13 23:35:42,752 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=481, Invalid=1969, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 23:35:42,752 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 158 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:35:42,752 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 0 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:35:42,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2025-04-13 23:35:44,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1652. [2025-04-13 23:35:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1651 states have (on average 3.311326468806784) internal successors, (5467), 1651 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 5467 transitions. [2025-04-13 23:35:44,326 INFO L79 Accepts]: Start accepts. Automaton has 1652 states and 5467 transitions. Word has length 20 [2025-04-13 23:35:44,326 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:35:44,326 INFO L485 AbstractCegarLoop]: Abstraction has 1652 states and 5467 transitions. [2025-04-13 23:35:44,326 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:44,326 INFO L278 IsEmpty]: Start isEmpty. Operand 1652 states and 5467 transitions. [2025-04-13 23:35:44,328 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:35:44,328 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:35:44,328 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:35:44,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2025-04-13 23:35:44,528 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2025-04-13 23:35:44,528 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:35:44,528 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:35:44,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1239199420, now seen corresponding path program 59 times [2025-04-13 23:35:44,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:35:44,528 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537711743] [2025-04-13 23:35:44,529 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:35:44,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:35:44,532 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:35:44,539 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:44,539 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:35:44,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:44,651 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:44,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:35:44,651 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537711743] [2025-04-13 23:35:44,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537711743] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:35:44,651 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906622840] [2025-04-13 23:35:44,651 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:35:44,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:35:44,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:35:44,653 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:35:44,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2025-04-13 23:35:44,711 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:35:44,735 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:44,735 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:35:44,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:44,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:35:44,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:35:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:44,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:35:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:44,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906622840] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:35:44,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:35:44,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-04-13 23:35:44,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749899058] [2025-04-13 23:35:44,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:35:44,954 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 23:35:44,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:35:44,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 23:35:44,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2025-04-13 23:35:44,954 INFO L87 Difference]: Start difference. First operand 1652 states and 5467 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:35:52,546 INFO L93 Difference]: Finished difference Result 2800 states and 8813 transitions. [2025-04-13 23:35:52,546 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-04-13 23:35:52,546 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 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 20 [2025-04-13 23:35:52,546 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:35:52,550 INFO L225 Difference]: With dead ends: 2800 [2025-04-13 23:35:52,550 INFO L226 Difference]: Without dead ends: 2786 [2025-04-13 23:35:52,551 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=506, Invalid=1846, Unknown=0, NotChecked=0, Total=2352 [2025-04-13 23:35:52,551 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 173 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 23:35:52,551 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 0 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 23:35:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2025-04-13 23:35:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1668. [2025-04-13 23:35:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1667 states have (on average 3.313137372525495) internal successors, (5523), 1667 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:54,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 5523 transitions. [2025-04-13 23:35:54,107 INFO L79 Accepts]: Start accepts. Automaton has 1668 states and 5523 transitions. Word has length 20 [2025-04-13 23:35:54,107 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:35:54,107 INFO L485 AbstractCegarLoop]: Abstraction has 1668 states and 5523 transitions. [2025-04-13 23:35:54,107 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:35:54,107 INFO L278 IsEmpty]: Start isEmpty. Operand 1668 states and 5523 transitions. [2025-04-13 23:35:54,109 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:35:54,109 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:35:54,109 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:35:54,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2025-04-13 23:35:54,309 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:35:54,309 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:35:54,310 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:35:54,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1392835430, now seen corresponding path program 60 times [2025-04-13 23:35:54,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:35:54,310 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368436823] [2025-04-13 23:35:54,310 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:35:54,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:35:54,314 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:35:54,321 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:54,321 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:35:54,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:54,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:35:54,420 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368436823] [2025-04-13 23:35:54,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368436823] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:35:54,420 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150058408] [2025-04-13 23:35:54,420 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:35:54,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:35:54,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:35:54,422 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:35:54,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2025-04-13 23:35:54,479 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:35:54,520 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:35:54,520 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:35:54,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:35:54,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:35:54,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:35:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:54,573 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:35:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:35:54,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150058408] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:35:54,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:35:54,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-04-13 23:35:54,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067729177] [2025-04-13 23:35:54,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:35:54,699 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 23:35:54,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:35:54,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 23:35:54,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2025-04-13 23:35:54,700 INFO L87 Difference]: Start difference. First operand 1668 states and 5523 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:36:02,983 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 24 DAG size of output: 22 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 23:36:11,060 WARN L286 SmtUtils]: Spent 8.05s on a formula simplification. DAG size of input: 34 DAG size of output: 32 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 23:36:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:36:28,311 INFO L93 Difference]: Finished difference Result 3208 states and 9842 transitions. [2025-04-13 23:36:28,311 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 23:36:28,312 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:36:28,312 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:36:28,317 INFO L225 Difference]: With dead ends: 3208 [2025-04-13 23:36:28,317 INFO L226 Difference]: Without dead ends: 3194 [2025-04-13 23:36:28,317 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=442, Invalid=1364, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 23:36:28,317 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:36:28,318 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 23:36:28,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2025-04-13 23:36:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 1732. [2025-04-13 23:36:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1731 states have (on average 3.324667822068169) internal successors, (5755), 1731 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:36:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 5755 transitions. [2025-04-13 23:36:29,925 INFO L79 Accepts]: Start accepts. Automaton has 1732 states and 5755 transitions. Word has length 20 [2025-04-13 23:36:29,925 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:36:29,925 INFO L485 AbstractCegarLoop]: Abstraction has 1732 states and 5755 transitions. [2025-04-13 23:36:29,925 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:36:29,926 INFO L278 IsEmpty]: Start isEmpty. Operand 1732 states and 5755 transitions. [2025-04-13 23:36:29,927 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:36:29,927 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:36:29,928 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:36:29,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2025-04-13 23:36:30,128 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2025-04-13 23:36:30,128 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:36:30,128 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:36:30,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1506339140, now seen corresponding path program 61 times [2025-04-13 23:36:30,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:36:30,128 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440119726] [2025-04-13 23:36:30,128 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:36:30,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:36:30,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:36:30,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:36:30,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:36:30,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:36:30,251 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:36:30,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:36:30,251 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440119726] [2025-04-13 23:36:30,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440119726] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:36:30,251 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907981594] [2025-04-13 23:36:30,251 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:36:30,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:36:30,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:36:30,253 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:36:30,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2025-04-13 23:36:30,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:36:30,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:36:30,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:36:30,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:36:30,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:36:30,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:36:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:36:30,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:36:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:36:30,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907981594] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:36:30,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:36:30,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 23:36:30,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203874021] [2025-04-13 23:36:30,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:36:30,518 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:36:30,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:36:30,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:36:30,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:36:30,519 INFO L87 Difference]: Start difference. First operand 1732 states and 5755 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:36:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:36:39,909 INFO L93 Difference]: Finished difference Result 3084 states and 9288 transitions. [2025-04-13 23:36:39,909 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-04-13 23:36:39,909 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 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 20 [2025-04-13 23:36:39,909 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:36:39,913 INFO L225 Difference]: With dead ends: 3084 [2025-04-13 23:36:39,913 INFO L226 Difference]: Without dead ends: 3012 [2025-04-13 23:36:39,914 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=962, Invalid=3328, Unknown=0, NotChecked=0, Total=4290 [2025-04-13 23:36:39,914 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 218 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:36:39,914 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 0 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:36:39,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2025-04-13 23:36:41,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 1792. [2025-04-13 23:36:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1791 states have (on average 3.3193746510329425) internal successors, (5945), 1791 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:36:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 5945 transitions. [2025-04-13 23:36:41,602 INFO L79 Accepts]: Start accepts. Automaton has 1792 states and 5945 transitions. Word has length 20 [2025-04-13 23:36:41,602 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:36:41,602 INFO L485 AbstractCegarLoop]: Abstraction has 1792 states and 5945 transitions. [2025-04-13 23:36:41,602 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:36:41,602 INFO L278 IsEmpty]: Start isEmpty. Operand 1792 states and 5945 transitions. [2025-04-13 23:36:41,604 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:36:41,604 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:36:41,604 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:36:41,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2025-04-13 23:36:41,804 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:36:41,804 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:36:41,804 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:36:41,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1021270092, now seen corresponding path program 62 times [2025-04-13 23:36:41,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:36:41,805 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79099521] [2025-04-13 23:36:41,805 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:36:41,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:36:41,808 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:36:41,813 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:36:41,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:36:41,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:36:41,919 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 23:36:41,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:36:41,919 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79099521] [2025-04-13 23:36:41,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79099521] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:36:41,919 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580294743] [2025-04-13 23:36:41,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:36:41,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:36:41,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:36:41,921 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:36:41,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2025-04-13 23:36:41,977 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:36:41,989 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:36:41,989 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:36:41,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:36:41,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:36:41,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:36:42,050 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 23:36:42,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:36:42,195 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 23:36:42,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580294743] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:36:42,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:36:42,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 23:36:42,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143118364] [2025-04-13 23:36:42,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:36:42,195 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:36:42,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:36:42,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:36:42,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:36:42,196 INFO L87 Difference]: Start difference. First operand 1792 states and 5945 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:36:47,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:36:47,031 INFO L93 Difference]: Finished difference Result 2120 states and 6845 transitions. [2025-04-13 23:36:47,032 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 23:36:47,032 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 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 20 [2025-04-13 23:36:47,032 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:36:47,036 INFO L225 Difference]: With dead ends: 2120 [2025-04-13 23:36:47,036 INFO L226 Difference]: Without dead ends: 2109 [2025-04-13 23:36:47,036 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=243, Invalid=1163, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 23:36:47,037 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 23:36:47,037 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 23:36:47,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2025-04-13 23:36:49,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 1748. [2025-04-13 23:36:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1747 states have (on average 3.3091013165426446) internal successors, (5781), 1747 states have internal predecessors, (5781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:36:49,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 5781 transitions. [2025-04-13 23:36:49,048 INFO L79 Accepts]: Start accepts. Automaton has 1748 states and 5781 transitions. Word has length 20 [2025-04-13 23:36:49,048 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:36:49,049 INFO L485 AbstractCegarLoop]: Abstraction has 1748 states and 5781 transitions. [2025-04-13 23:36:49,049 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:36:49,049 INFO L278 IsEmpty]: Start isEmpty. Operand 1748 states and 5781 transitions. [2025-04-13 23:36:49,050 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:36:49,051 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:36:49,051 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:36:49,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2025-04-13 23:36:49,251 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:36:49,251 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:36:49,251 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:36:49,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1371516586, now seen corresponding path program 63 times [2025-04-13 23:36:49,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:36:49,251 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857400439] [2025-04-13 23:36:49,251 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:36:49,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:36:49,255 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:36:49,265 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:36:49,265 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:36:49,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:36:49,457 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 23:36:49,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:36:49,458 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857400439] [2025-04-13 23:36:49,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857400439] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:36:49,458 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088785457] [2025-04-13 23:36:49,458 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:36:49,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:36:49,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:36:49,459 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:36:49,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2025-04-13 23:36:49,520 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:36:49,559 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:36:49,559 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:36:49,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:36:49,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:36:49,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:36:49,647 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 23:36:49,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:36:49,817 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 23:36:49,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088785457] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:36:49,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:36:49,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2025-04-13 23:36:49,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681370200] [2025-04-13 23:36:49,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:36:49,817 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:36:49,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:36:49,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:36:49,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:36:49,818 INFO L87 Difference]: Start difference. First operand 1748 states and 5781 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:36:57,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:36:57,160 INFO L93 Difference]: Finished difference Result 2317 states and 7365 transitions. [2025-04-13 23:36:57,160 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-04-13 23:36:57,160 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 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 20 [2025-04-13 23:36:57,160 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:36:57,164 INFO L225 Difference]: With dead ends: 2317 [2025-04-13 23:36:57,164 INFO L226 Difference]: Without dead ends: 2303 [2025-04-13 23:36:57,164 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=683, Invalid=3349, Unknown=0, NotChecked=0, Total=4032 [2025-04-13 23:36:57,165 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 126 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:36:57,165 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 0 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 23:36:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2025-04-13 23:36:58,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 1738. [2025-04-13 23:36:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1737 states have (on average 3.312607944732297) internal successors, (5754), 1737 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:36:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 5754 transitions. [2025-04-13 23:36:58,810 INFO L79 Accepts]: Start accepts. Automaton has 1738 states and 5754 transitions. Word has length 20 [2025-04-13 23:36:58,810 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:36:58,810 INFO L485 AbstractCegarLoop]: Abstraction has 1738 states and 5754 transitions. [2025-04-13 23:36:58,810 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:36:58,810 INFO L278 IsEmpty]: Start isEmpty. Operand 1738 states and 5754 transitions. [2025-04-13 23:36:58,812 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:36:58,812 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:36:58,812 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:36:58,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2025-04-13 23:36:59,012 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2025-04-13 23:36:59,012 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:36:59,012 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:36:59,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1382814860, now seen corresponding path program 64 times [2025-04-13 23:36:59,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:36:59,012 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561946221] [2025-04-13 23:36:59,012 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:36:59,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:36:59,016 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:36:59,019 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:36:59,019 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:36:59,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:36:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:36:59,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:36:59,134 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561946221] [2025-04-13 23:36:59,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561946221] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:36:59,134 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449297160] [2025-04-13 23:36:59,134 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:36:59,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:36:59,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:36:59,136 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:36:59,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2025-04-13 23:36:59,194 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:36:59,206 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:36:59,207 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:36:59,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:36:59,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:36:59,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:36:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:36:59,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:36:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:36:59,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449297160] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:36:59,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:36:59,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 23:36:59,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837390631] [2025-04-13 23:36:59,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:36:59,426 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 23:36:59,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:36:59,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 23:36:59,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2025-04-13 23:36:59,426 INFO L87 Difference]: Start difference. First operand 1738 states and 5754 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:37:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:37:06,509 INFO L93 Difference]: Finished difference Result 2403 states and 7528 transitions. [2025-04-13 23:37:06,510 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-04-13 23:37:06,510 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:37:06,510 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:37:06,514 INFO L225 Difference]: With dead ends: 2403 [2025-04-13 23:37:06,514 INFO L226 Difference]: Without dead ends: 2389 [2025-04-13 23:37:06,514 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=498, Invalid=1854, Unknown=0, NotChecked=0, Total=2352 [2025-04-13 23:37:06,514 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 126 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:37:06,514 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 0 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 23:37:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2025-04-13 23:37:08,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1740. [2025-04-13 23:37:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1739 states have (on average 3.307073030477286) internal successors, (5751), 1739 states have internal predecessors, (5751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:37:08,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 5751 transitions. [2025-04-13 23:37:08,162 INFO L79 Accepts]: Start accepts. Automaton has 1740 states and 5751 transitions. Word has length 20 [2025-04-13 23:37:08,162 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:37:08,162 INFO L485 AbstractCegarLoop]: Abstraction has 1740 states and 5751 transitions. [2025-04-13 23:37:08,162 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:37:08,162 INFO L278 IsEmpty]: Start isEmpty. Operand 1740 states and 5751 transitions. [2025-04-13 23:37:08,164 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:37:08,164 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:37:08,164 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:37:08,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2025-04-13 23:37:08,364 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:37:08,364 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:37:08,364 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:37:08,365 INFO L85 PathProgramCache]: Analyzing trace with hash 844959282, now seen corresponding path program 65 times [2025-04-13 23:37:08,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:37:08,365 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802523345] [2025-04-13 23:37:08,365 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:37:08,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:37:08,376 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:37:08,383 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:37:08,383 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:37:08,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:37:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:37:08,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:37:08,456 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802523345] [2025-04-13 23:37:08,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802523345] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:37:08,456 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12610547] [2025-04-13 23:37:08,456 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 23:37:08,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:37:08,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:37:08,458 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:37:08,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2025-04-13 23:37:08,516 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:37:08,578 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:37:08,578 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 23:37:08,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:37:08,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:37:08,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:37:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:37:08,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:37:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:37:08,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12610547] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:37:08,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:37:08,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 23:37:08,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789651011] [2025-04-13 23:37:08,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:37:08,799 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 23:37:08,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:37:08,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 23:37:08,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:37:08,799 INFO L87 Difference]: Start difference. First operand 1740 states and 5751 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 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 23:37:17,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:37:17,451 INFO L93 Difference]: Finished difference Result 2485 states and 7822 transitions. [2025-04-13 23:37:17,451 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 23:37:17,451 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 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 20 [2025-04-13 23:37:17,451 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:37:17,455 INFO L225 Difference]: With dead ends: 2485 [2025-04-13 23:37:17,456 INFO L226 Difference]: Without dead ends: 2459 [2025-04-13 23:37:17,456 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=272, Invalid=1368, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 23:37:17,456 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 23:37:17,456 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 0 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 23:37:17,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2025-04-13 23:37:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 1782. [2025-04-13 23:37:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1782 states, 1781 states have (on average 3.3149915777653005) internal successors, (5904), 1781 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:37:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 5904 transitions. [2025-04-13 23:37:19,487 INFO L79 Accepts]: Start accepts. Automaton has 1782 states and 5904 transitions. Word has length 20 [2025-04-13 23:37:19,487 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:37:19,487 INFO L485 AbstractCegarLoop]: Abstraction has 1782 states and 5904 transitions. [2025-04-13 23:37:19,488 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 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 23:37:19,488 INFO L278 IsEmpty]: Start isEmpty. Operand 1782 states and 5904 transitions. [2025-04-13 23:37:19,490 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:37:19,490 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:37:19,490 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:37:19,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2025-04-13 23:37:19,690 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:37:19,690 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:37:19,690 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:37:19,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1900579278, now seen corresponding path program 66 times [2025-04-13 23:37:19,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:37:19,691 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95661537] [2025-04-13 23:37:19,691 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:37:19,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:37:19,695 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:37:19,701 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:37:19,702 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:37:19,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:37:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:37:19,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:37:19,814 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95661537] [2025-04-13 23:37:19,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95661537] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:37:19,814 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771076055] [2025-04-13 23:37:19,814 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 23:37:19,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:37:19,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:37:19,816 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:37:19,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2025-04-13 23:37:19,881 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:37:19,900 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:37:19,901 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 23:37:19,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:37:19,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:37:19,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:37:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:37:19,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:37:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:37:20,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771076055] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:37:20,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:37:20,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-04-13 23:37:20,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746222532] [2025-04-13 23:37:20,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:37:20,086 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 23:37:20,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:37:20,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 23:37:20,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2025-04-13 23:37:20,086 INFO L87 Difference]: Start difference. First operand 1782 states and 5904 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 23:37:40,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:37:40,599 INFO L93 Difference]: Finished difference Result 2374 states and 7286 transitions. [2025-04-13 23:37:40,599 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 23:37:40,599 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 20 [2025-04-13 23:37:40,599 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:37:40,603 INFO L225 Difference]: With dead ends: 2374 [2025-04-13 23:37:40,603 INFO L226 Difference]: Without dead ends: 2339 [2025-04-13 23:37:40,603 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=404, Invalid=1402, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 23:37:40,604 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:37:40,604 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 23:37:40,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2025-04-13 23:37:42,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 1814. [2025-04-13 23:37:42,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1813 states have (on average 3.311638168781026) internal successors, (6004), 1813 states have internal predecessors, (6004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:37:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 6004 transitions. [2025-04-13 23:37:42,426 INFO L79 Accepts]: Start accepts. Automaton has 1814 states and 6004 transitions. Word has length 20 [2025-04-13 23:37:42,426 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:37:42,426 INFO L485 AbstractCegarLoop]: Abstraction has 1814 states and 6004 transitions. [2025-04-13 23:37:42,426 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 23:37:42,426 INFO L278 IsEmpty]: Start isEmpty. Operand 1814 states and 6004 transitions. [2025-04-13 23:37:42,428 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:37:42,428 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:37:42,428 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:37:42,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2025-04-13 23:37:42,628 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:37:42,628 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:37:42,629 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:37:42,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1389148212, now seen corresponding path program 67 times [2025-04-13 23:37:42,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:37:42,629 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300585631] [2025-04-13 23:37:42,629 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:37:42,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:37:42,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:37:42,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:37:42,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:37:42,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:37:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:37:42,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:37:42,751 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300585631] [2025-04-13 23:37:42,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300585631] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:37:42,751 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647917057] [2025-04-13 23:37:42,751 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 23:37:42,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:37:42,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:37:42,753 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:37:42,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2025-04-13 23:37:42,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 23:37:42,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:37:42,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 23:37:42,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:37:42,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:37:42,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:37:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:37:42,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:37:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:37:43,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647917057] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:37:43,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:37:43,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:37:43,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520689260] [2025-04-13 23:37:43,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:37:43,053 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:37:43,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:37:43,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:37:43,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:37:43,054 INFO L87 Difference]: Start difference. First operand 1814 states and 6004 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:37:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:37:49,314 INFO L93 Difference]: Finished difference Result 2238 states and 7108 transitions. [2025-04-13 23:37:49,314 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-13 23:37:49,314 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 20 [2025-04-13 23:37:49,314 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:37:49,318 INFO L225 Difference]: With dead ends: 2238 [2025-04-13 23:37:49,318 INFO L226 Difference]: Without dead ends: 2224 [2025-04-13 23:37:49,318 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=259, Invalid=1073, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 23:37:49,318 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 114 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 23:37:49,318 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 0 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 23:37:49,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2025-04-13 23:37:51,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1814. [2025-04-13 23:37:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1813 states have (on average 3.3138444567015997) internal successors, (6008), 1813 states have internal predecessors, (6008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:37:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 6008 transitions. [2025-04-13 23:37:51,098 INFO L79 Accepts]: Start accepts. Automaton has 1814 states and 6008 transitions. Word has length 20 [2025-04-13 23:37:51,098 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:37:51,098 INFO L485 AbstractCegarLoop]: Abstraction has 1814 states and 6008 transitions. [2025-04-13 23:37:51,098 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 23:37:51,098 INFO L278 IsEmpty]: Start isEmpty. Operand 1814 states and 6008 transitions. [2025-04-13 23:37:51,100 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:37:51,100 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:37:51,100 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:37:51,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2025-04-13 23:37:51,300 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2025-04-13 23:37:51,300 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:37:51,301 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:37:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash 273784234, now seen corresponding path program 68 times [2025-04-13 23:37:51,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:37:51,301 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365158111] [2025-04-13 23:37:51,301 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:37:51,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:37:51,305 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:37:51,310 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:37:51,310 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:37:51,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:37:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:37:51,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:37:51,468 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365158111] [2025-04-13 23:37:51,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365158111] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:37:51,468 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092097892] [2025-04-13 23:37:51,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 23:37:51,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:37:51,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:37:51,469 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:37:51,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2025-04-13 23:37:51,530 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:37:51,543 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:37:51,543 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 23:37:51,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:37:51,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:37:51,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:37:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:37:51,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:37:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:37:51,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092097892] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:37:51,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:37:51,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2025-04-13 23:37:51,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545057570] [2025-04-13 23:37:51,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:37:51,746 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:37:51,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:37:51,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:37:51,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:37:51,747 INFO L87 Difference]: Start difference. First operand 1814 states and 6008 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:38:00,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:38:00,760 INFO L93 Difference]: Finished difference Result 2224 states and 7034 transitions. [2025-04-13 23:38:00,760 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 23:38:00,760 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-04-13 23:38:00,761 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:38:00,765 INFO L225 Difference]: With dead ends: 2224 [2025-04-13 23:38:00,765 INFO L226 Difference]: Without dead ends: 2210 [2025-04-13 23:38:00,765 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2025-04-13 23:38:00,766 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 23:38:00,766 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 23:38:00,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2025-04-13 23:38:02,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 1824. [2025-04-13 23:38:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1823 states have (on average 3.3159626988480526) internal successors, (6045), 1823 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:38:02,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 6045 transitions. [2025-04-13 23:38:02,844 INFO L79 Accepts]: Start accepts. Automaton has 1824 states and 6045 transitions. Word has length 20 [2025-04-13 23:38:02,844 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:38:02,844 INFO L485 AbstractCegarLoop]: Abstraction has 1824 states and 6045 transitions. [2025-04-13 23:38:02,844 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:38:02,844 INFO L278 IsEmpty]: Start isEmpty. Operand 1824 states and 6045 transitions. [2025-04-13 23:38:02,846 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:38:02,846 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:38:02,846 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:38:02,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2025-04-13 23:38:03,047 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:38:03,047 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:38:03,047 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:38:03,047 INFO L85 PathProgramCache]: Analyzing trace with hash 160280524, now seen corresponding path program 69 times [2025-04-13 23:38:03,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:38:03,047 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801577500] [2025-04-13 23:38:03,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:38:03,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:38:03,051 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:38:03,058 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:38:03,058 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:38:03,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:38:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:38:03,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:38:03,249 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801577500] [2025-04-13 23:38:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801577500] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:38:03,249 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370837567] [2025-04-13 23:38:03,249 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 23:38:03,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:38:03,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:38:03,251 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:38:03,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2025-04-13 23:38:03,317 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 23:38:03,342 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:38:03,343 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 23:38:03,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:38:03,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:38:03,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:38:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:38:03,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:38:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:38:03,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370837567] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:38:03,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:38:03,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2025-04-13 23:38:03,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416644846] [2025-04-13 23:38:03,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:38:03,581 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 23:38:03,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:38:03,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 23:38:03,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2025-04-13 23:38:03,582 INFO L87 Difference]: Start difference. First operand 1824 states and 6045 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:38:10,083 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 [] [2025-04-13 23:38:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 23:38:17,030 INFO L93 Difference]: Finished difference Result 2731 states and 8577 transitions. [2025-04-13 23:38:17,031 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 23:38:17,031 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 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 20 [2025-04-13 23:38:17,031 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 23:38:17,035 INFO L225 Difference]: With dead ends: 2731 [2025-04-13 23:38:17,035 INFO L226 Difference]: Without dead ends: 2689 [2025-04-13 23:38:17,036 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=505, Invalid=2147, Unknown=0, NotChecked=0, Total=2652 [2025-04-13 23:38:17,036 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 121 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2025-04-13 23:38:17,036 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 0 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1141 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2025-04-13 23:38:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2025-04-13 23:38:19,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2178. [2025-04-13 23:38:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2177 states have (on average 3.3578318787322003) internal successors, (7310), 2177 states have internal predecessors, (7310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:38:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 7310 transitions. [2025-04-13 23:38:19,240 INFO L79 Accepts]: Start accepts. Automaton has 2178 states and 7310 transitions. Word has length 20 [2025-04-13 23:38:19,240 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 23:38:19,240 INFO L485 AbstractCegarLoop]: Abstraction has 2178 states and 7310 transitions. [2025-04-13 23:38:19,240 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 23:38:19,240 INFO L278 IsEmpty]: Start isEmpty. Operand 2178 states and 7310 transitions. [2025-04-13 23:38:19,242 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 23:38:19,242 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 23:38:19,242 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 23:38:19,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2025-04-13 23:38:19,442 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:38:19,443 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 23:38:19,443 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 23:38:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2002831568, now seen corresponding path program 70 times [2025-04-13 23:38:19,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 23:38:19,443 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570366175] [2025-04-13 23:38:19,443 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:38:19,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 23:38:19,446 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:38:19,451 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:38:19,451 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:38:19,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:38:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:38:19,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 23:38:19,558 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570366175] [2025-04-13 23:38:19,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570366175] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 23:38:19,558 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935249706] [2025-04-13 23:38:19,558 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 23:38:19,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 23:38:19,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 23:38:19,559 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 23:38:19,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2025-04-13 23:38:19,620 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 23:38:19,632 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 23:38:19,632 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 23:38:19,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 23:38:19,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 23:38:19,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 23:38:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:38:19,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 23:38:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 23:38:19,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935249706] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 23:38:19,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 23:38:19,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 23:38:19,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148441079] [2025-04-13 23:38:19,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 23:38:19,832 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 23:38:19,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 23:38:19,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 23:38:19,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2025-04-13 23:38:19,832 INFO L87 Difference]: Start difference. First operand 2178 states and 7310 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) Received shutdown request... [2025-04-13 23:38:24,670 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 23:38:24,704 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 23:38:25,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2025-04-13 23:38:25,904 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2025-04-13 23:38:26,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2025-04-13 23:38:26,008 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 23:38:26,008 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2025-04-13 23:38:26,008 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 23:38:26,008 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 23:38:26,009 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 23:38:26,009 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2025-04-13 23:38:26,009 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (2178states) and FLOYD_HOARE automaton (currently 6 states, 19 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2025-04-13 23:38:26,012 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 23:38:26,013 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 23:38:26,014 INFO L422 BasicCegarLoop]: Path program histogram: [70, 5, 3, 1, 1] [2025-04-13 23:38:26,016 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 23:38:26,016 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 23:38:26,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 11:38:26 BasicIcfg [2025-04-13 23:38:26,018 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 23:38:26,019 INFO L158 Benchmark]: Toolchain (without parser) took 863034.78ms. Allocated memory was 142.6MB in the beginning and 981.5MB in the end (delta: 838.9MB). Free memory was 98.8MB in the beginning and 395.6MB in the end (delta: -296.7MB). Peak memory consumption was 543.8MB. Max. memory is 8.0GB. [2025-04-13 23:38:26,019 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 159.4MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:38:26,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.05ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 83.7MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 23:38:26,019 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.31ms. Allocated memory is still 142.6MB. Free memory was 83.7MB in the beginning and 81.5MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 23:38:26,019 INFO L158 Benchmark]: Boogie Preprocessor took 38.03ms. Allocated memory is still 142.6MB. Free memory was 81.5MB in the beginning and 80.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 23:38:26,019 INFO L158 Benchmark]: IcfgBuilder took 541.99ms. Allocated memory is still 142.6MB. Free memory was 80.0MB in the beginning and 31.9MB in the end (delta: 48.1MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2025-04-13 23:38:26,019 INFO L158 Benchmark]: TraceAbstraction took 862119.67ms. Allocated memory was 142.6MB in the beginning and 981.5MB in the end (delta: 838.9MB). Free memory was 31.2MB in the beginning and 395.6MB in the end (delta: -364.4MB). Peak memory consumption was 476.6MB. Max. memory is 8.0GB. [2025-04-13 23:38:26,020 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 159.4MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 297.05ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 83.7MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.31ms. Allocated memory is still 142.6MB. Free memory was 83.7MB in the beginning and 81.5MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.03ms. Allocated memory is still 142.6MB. Free memory was 81.5MB in the beginning and 80.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 541.99ms. Allocated memory is still 142.6MB. Free memory was 80.0MB in the beginning and 31.9MB in the end (delta: 48.1MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. * TraceAbstraction took 862119.67ms. Allocated memory was 142.6MB in the beginning and 981.5MB in the end (delta: 838.9MB). Free memory was 31.2MB in the beginning and 395.6MB in the end (delta: -364.4MB). Peak memory consumption was 476.6MB. 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: 91]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while NwaCegarLoop was constructing difference of abstraction (2178states) and FLOYD_HOARE automaton (currently 6 states, 19 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (2178states) and FLOYD_HOARE automaton (currently 6 states, 19 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (2178states) and FLOYD_HOARE automaton (currently 6 states, 19 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 25 locations, 29 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 862.0s, OverallIterations: 80, TraceHistogramMax: 4, PathProgramHistogramMax: 70, EmptinessCheckTime: 0.1s, AutomataDifference: 628.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 mSolverCounterUnknown, 10297 SdHoareTripleChecker+Valid, 152.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10297 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 147.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1865 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57072 IncrementalHoareTripleChecker+Invalid, 58958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1865 mSolverCounterUnsat, 0 mSDtfsCounter, 57072 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5074 GetRequests, 2162 SyntacticMatches, 50 SemanticMatches, 2861 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29748 ImplicationChecksByTransitivity, 351.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2178occurred in iteration=79, InterpolantAutomatonStates: 2461, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 48.2s AutomataMinimizationTime, 79 MinimizatonAttempts, 25061 StatesRemovedByMinimization, 76 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 162.7s InterpolantComputationTime, 3013 NumberOfCodeBlocks, 3011 NumberOfCodeBlocksAsserted, 332 NumberOfCheckSat, 4253 ConstructedInterpolants, 0 QuantifiedInterpolants, 26345 SizeOfPredicates, 144 NumberOfNonLiveVariables, 12764 ConjunctsInSsa, 1049 ConjunctsInUnsatCore, 230 InterpolantComputations, 7 PerfectInterpolantSequences, 761/2607 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