/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 03:49:55,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 03:49:55,416 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 03:49:55,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 03:49:55,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 03:49:55,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 03:49:55,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 03:49:55,473 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 03:49:55,473 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 03:49:55,476 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 03:49:55,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 03:49:55,477 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 03:49:55,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 03:49:55,478 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 03:49:55,479 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 03:49:55,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 03:49:55,479 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 03:49:55,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 03:49:55,480 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 03:49:55,480 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 03:49:55,480 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 03:49:55,482 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 03:49:55,482 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 03:49:55,482 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 03:49:55,482 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 03:49:55,483 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 03:49:55,483 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 03:49:55,483 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 03:49:55,484 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 03:49:55,484 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 03:49:55,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 03:49:55,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 03:49:55,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 03:49:55,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 03:49:55,485 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 03:49:55,486 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 03:49:55,486 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 03:49:55,486 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 03:49:55,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 03:49:55,487 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 03:49:55,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 03:49:55,488 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 03:49:55,488 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:49:55,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 03:49:55,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 03:49:55,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 03:49:55,821 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 03:49:55,821 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 03:49:55,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-01 03:49:57,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 03:49:57,491 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 03:49:57,491 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-01 03:49:57,504 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/debfc6e35/9142d8b784bb40eb8328d67fd1019782/FLAG330ae5462 [2024-11-01 03:49:57,516 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/debfc6e35/9142d8b784bb40eb8328d67fd1019782 [2024-11-01 03:49:57,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 03:49:57,519 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 03:49:57,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 03:49:57,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 03:49:57,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 03:49:57,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408829a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:57, skipping insertion in model container [2024-11-01 03:49:57,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 03:49:57" (1/1) ... [2024-11-01 03:49:57,590 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 03:49:57,789 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c[1270,1283] [2024-11-01 03:49:58,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 03:49:58,038 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 03:49:58,051 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c[1270,1283] [2024-11-01 03:49:58,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 03:49:58,181 INFO L204 MainTranslator]: Completed translation [2024-11-01 03:49:58,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58 WrapperNode [2024-11-01 03:49:58,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 03:49:58,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 03:49:58,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 03:49:58,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 03:49:58,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (1/1) ... [2024-11-01 03:49:58,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (1/1) ... [2024-11-01 03:49:58,288 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 953 [2024-11-01 03:49:58,288 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 03:49:58,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 03:49:58,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 03:49:58,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 03:49:58,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (1/1) ... [2024-11-01 03:49:58,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (1/1) ... [2024-11-01 03:49:58,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (1/1) ... [2024-11-01 03:49:58,358 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 9, 9]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 4, 4]. [2024-11-01 03:49:58,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (1/1) ... [2024-11-01 03:49:58,358 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (1/1) ... [2024-11-01 03:49:58,401 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (1/1) ... [2024-11-01 03:49:58,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (1/1) ... [2024-11-01 03:49:58,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (1/1) ... [2024-11-01 03:49:58,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (1/1) ... [2024-11-01 03:49:58,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 03:49:58,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 03:49:58,428 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 03:49:58,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 03:49:58,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (1/1) ... [2024-11-01 03:49:58,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 03:49:58,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:49:58,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-01 03:49:58,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-01 03:49:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 03:49:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-01 03:49:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-01 03:49:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-01 03:49:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 03:49:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-01 03:49:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-01 03:49:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 03:49:58,491 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 03:49:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-01 03:49:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 03:49:58,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 03:49:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-01 03:49:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-01 03:49:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-01 03:49:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-01 03:49:58,766 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 03:49:58,768 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 03:49:59,553 INFO L? ?]: Removed 675 outVars from TransFormulas that were not future-live. [2024-11-01 03:49:59,554 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 03:49:59,568 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 03:49:59,568 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-01 03:49:59,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 03:49:59 BoogieIcfgContainer [2024-11-01 03:49:59,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 03:49:59,571 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 03:49:59,571 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 03:49:59,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 03:49:59,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 03:49:57" (1/3) ... [2024-11-01 03:49:59,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e1580a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 03:49:59, skipping insertion in model container [2024-11-01 03:49:59,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:49:58" (2/3) ... [2024-11-01 03:49:59,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e1580a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 03:49:59, skipping insertion in model container [2024-11-01 03:49:59,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 03:49:59" (3/3) ... [2024-11-01 03:49:59,578 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-01 03:49:59,595 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 03:49:59,596 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 03:49:59,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 03:49:59,664 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55afc3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 03:49:59,665 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 03:49:59,668 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:49:59,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-01 03:49:59,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:49:59,677 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:49:59,677 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:49:59,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:49:59,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1919498836, now seen corresponding path program 1 times [2024-11-01 03:49:59,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:49:59,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402104591] [2024-11-01 03:49:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:49:59,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:49:59,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:49:59,695 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) [2024-11-01 03:49:59,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-01 03:50:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:00,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 03:50:00,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 03:50:00,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 03:50:00,257 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:00,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402104591] [2024-11-01 03:50:00,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1402104591] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:00,262 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:00,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-01 03:50:00,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705529842] [2024-11-01 03:50:00,269 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:00,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 03:50:00,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:00,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 03:50:00,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 03:50:00,305 INFO L87 Difference]: Start difference. First operand has 42 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:00,324 INFO L93 Difference]: Finished difference Result 77 states and 117 transitions. [2024-11-01 03:50:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 03:50:00,326 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 39 [2024-11-01 03:50:00,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:00,332 INFO L225 Difference]: With dead ends: 77 [2024-11-01 03:50:00,333 INFO L226 Difference]: Without dead ends: 39 [2024-11-01 03:50:00,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 03:50:00,341 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:00,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:00,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-01 03:50:00,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-01 03:50:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:50:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-01 03:50:00,382 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 39 [2024-11-01 03:50:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:00,383 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-01 03:50:00,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-01 03:50:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-01 03:50:00,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:00,387 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:00,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-01 03:50:00,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:00,588 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:00,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:00,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1633554172, now seen corresponding path program 1 times [2024-11-01 03:50:00,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:00,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416445286] [2024-11-01 03:50:00,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:00,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:00,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:00,592 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) [2024-11-01 03:50:00,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-01 03:50:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:00,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:00,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 03:50:00,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 03:50:00,998 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:00,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416445286] [2024-11-01 03:50:00,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1416445286] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:00,998 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:00,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:00,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267880378] [2024-11-01 03:50:00,999 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:01,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:01,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:01,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:01,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:01,002 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:01,039 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2024-11-01 03:50:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:01,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 39 [2024-11-01 03:50:01,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:01,042 INFO L225 Difference]: With dead ends: 77 [2024-11-01 03:50:01,042 INFO L226 Difference]: Without dead ends: 42 [2024-11-01 03:50:01,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:01,043 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:01,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 135 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:01,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-01 03:50:01,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-01 03:50:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:50:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2024-11-01 03:50:01,051 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 39 [2024-11-01 03:50:01,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:01,051 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2024-11-01 03:50:01,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2024-11-01 03:50:01,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-01 03:50:01,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:01,054 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:01,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-01 03:50:01,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:01,255 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:01,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:01,256 INFO L85 PathProgramCache]: Analyzing trace with hash -682782464, now seen corresponding path program 1 times [2024-11-01 03:50:01,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:01,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046890062] [2024-11-01 03:50:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:01,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:01,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:01,258 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) [2024-11-01 03:50:01,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-01 03:50:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:01,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:01,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-01 03:50:01,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-01 03:50:01,661 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:01,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046890062] [2024-11-01 03:50:01,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1046890062] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:01,661 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:01,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:01,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162264] [2024-11-01 03:50:01,662 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:01,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:01,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:01,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:01,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:01,663 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:01,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:01,704 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2024-11-01 03:50:01,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:01,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 43 [2024-11-01 03:50:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:01,706 INFO L225 Difference]: With dead ends: 77 [2024-11-01 03:50:01,706 INFO L226 Difference]: Without dead ends: 45 [2024-11-01 03:50:01,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:01,708 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:01,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 90 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-01 03:50:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-01 03:50:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:50:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2024-11-01 03:50:01,715 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 43 [2024-11-01 03:50:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:01,715 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2024-11-01 03:50:01,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2024-11-01 03:50:01,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-01 03:50:01,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:01,719 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:01,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-01 03:50:01,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:01,920 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:01,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:01,921 INFO L85 PathProgramCache]: Analyzing trace with hash -374357380, now seen corresponding path program 1 times [2024-11-01 03:50:01,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:01,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000278098] [2024-11-01 03:50:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:01,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:01,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:01,923 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) [2024-11-01 03:50:01,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-01 03:50:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:02,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:02,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-01 03:50:02,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-01 03:50:02,440 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:02,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000278098] [2024-11-01 03:50:02,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2000278098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:02,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:02,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:02,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254099880] [2024-11-01 03:50:02,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:02,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:02,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:02,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:02,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:02,442 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:02,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:02,543 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2024-11-01 03:50:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 03:50:02,546 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 47 [2024-11-01 03:50:02,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:02,547 INFO L225 Difference]: With dead ends: 91 [2024-11-01 03:50:02,547 INFO L226 Difference]: Without dead ends: 53 [2024-11-01 03:50:02,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:02,548 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:02,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 179 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:02,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-01 03:50:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-01 03:50:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:50:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2024-11-01 03:50:02,560 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 47 [2024-11-01 03:50:02,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:02,560 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2024-11-01 03:50:02,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:02,560 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2024-11-01 03:50:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-01 03:50:02,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:02,563 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:02,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-01 03:50:02,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:02,768 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:02,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1977166964, now seen corresponding path program 2 times [2024-11-01 03:50:02,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:02,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053216663] [2024-11-01 03:50:02,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:02,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:02,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:02,771 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) [2024-11-01 03:50:02,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-01 03:50:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:03,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:03,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-01 03:50:03,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-01 03:50:03,229 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053216663] [2024-11-01 03:50:03,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1053216663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:03,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:03,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:03,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377998637] [2024-11-01 03:50:03,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:03,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:03,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:03,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:03,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:03,234 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:03,335 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2024-11-01 03:50:03,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 03:50:03,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 55 [2024-11-01 03:50:03,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:03,340 INFO L225 Difference]: With dead ends: 93 [2024-11-01 03:50:03,340 INFO L226 Difference]: Without dead ends: 61 [2024-11-01 03:50:03,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:03,341 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:03,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 219 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-01 03:50:03,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-01 03:50:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 03:50:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-11-01 03:50:03,354 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 55 [2024-11-01 03:50:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:03,354 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-11-01 03:50:03,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:03,354 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-11-01 03:50:03,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-01 03:50:03,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:03,357 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:03,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-01 03:50:03,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:03,561 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:03,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:03,561 INFO L85 PathProgramCache]: Analyzing trace with hash 908574060, now seen corresponding path program 3 times [2024-11-01 03:50:03,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:03,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987884619] [2024-11-01 03:50:03,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:03,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:03,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:03,563 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) [2024-11-01 03:50:03,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-01 03:50:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:03,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-01 03:50:03,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-01 03:50:04,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-01 03:50:05,476 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:05,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987884619] [2024-11-01 03:50:05,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [987884619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:05,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:05,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-01 03:50:05,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480239036] [2024-11-01 03:50:05,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:05,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 03:50:05,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:05,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 03:50:05,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-01 03:50:05,479 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 17 states, 15 states have (on average 3.2) internal successors, (48), 17 states have internal predecessors, (48), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-01 03:50:05,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:05,882 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2024-11-01 03:50:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 03:50:05,882 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.2) internal successors, (48), 17 states have internal predecessors, (48), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) Word has length 63 [2024-11-01 03:50:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:05,884 INFO L225 Difference]: With dead ends: 75 [2024-11-01 03:50:05,884 INFO L226 Difference]: Without dead ends: 73 [2024-11-01 03:50:05,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-01 03:50:05,885 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 107 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:05,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 213 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-01 03:50:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-01 03:50:05,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-01 03:50:05,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2024-11-01 03:50:05,896 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 63 [2024-11-01 03:50:05,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:05,897 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2024-11-01 03:50:05,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.2) internal successors, (48), 17 states have internal predecessors, (48), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-01 03:50:05,898 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2024-11-01 03:50:05,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-01 03:50:05,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:05,901 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:05,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-01 03:50:06,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:06,105 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:06,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:06,105 INFO L85 PathProgramCache]: Analyzing trace with hash -791886709, now seen corresponding path program 1 times [2024-11-01 03:50:06,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:06,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565479513] [2024-11-01 03:50:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:06,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:06,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:06,107 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) [2024-11-01 03:50:06,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-01 03:50:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:06,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:06,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-01 03:50:06,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-01 03:50:06,783 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:06,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565479513] [2024-11-01 03:50:06,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1565479513] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:06,783 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:06,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:06,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934072303] [2024-11-01 03:50:06,784 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:06,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:06,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:06,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:06,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:06,785 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:06,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:06,835 INFO L93 Difference]: Finished difference Result 107 states and 132 transitions. [2024-11-01 03:50:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:06,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 104 [2024-11-01 03:50:06,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:06,840 INFO L225 Difference]: With dead ends: 107 [2024-11-01 03:50:06,840 INFO L226 Difference]: Without dead ends: 76 [2024-11-01 03:50:06,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:06,841 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:06,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 90 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-01 03:50:06,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-01 03:50:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 64 states have (on average 1.109375) internal successors, (71), 64 states have internal predecessors, (71), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:06,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2024-11-01 03:50:06,853 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 104 [2024-11-01 03:50:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:06,853 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2024-11-01 03:50:06,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2024-11-01 03:50:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-01 03:50:06,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:06,855 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:06,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-01 03:50:07,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:07,063 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:07,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:07,063 INFO L85 PathProgramCache]: Analyzing trace with hash 564524551, now seen corresponding path program 1 times [2024-11-01 03:50:07,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:07,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243544092] [2024-11-01 03:50:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:07,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:07,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:07,072 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) [2024-11-01 03:50:07,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-01 03:50:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:07,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:07,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-01 03:50:07,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-01 03:50:07,798 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243544092] [2024-11-01 03:50:07,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1243544092] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:07,799 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:07,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:07,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43063209] [2024-11-01 03:50:07,799 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:07,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:07,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:07,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:07,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:07,800 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:07,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:07,837 INFO L93 Difference]: Finished difference Result 113 states and 138 transitions. [2024-11-01 03:50:07,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:07,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 108 [2024-11-01 03:50:07,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:07,840 INFO L225 Difference]: With dead ends: 113 [2024-11-01 03:50:07,840 INFO L226 Difference]: Without dead ends: 79 [2024-11-01 03:50:07,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:07,841 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:07,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 133 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:07,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-01 03:50:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-01 03:50:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 67 states have internal predecessors, (74), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2024-11-01 03:50:07,851 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 108 [2024-11-01 03:50:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:07,851 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2024-11-01 03:50:07,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2024-11-01 03:50:07,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-01 03:50:07,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:07,853 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:07,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-01 03:50:08,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:08,054 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:08,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:08,055 INFO L85 PathProgramCache]: Analyzing trace with hash 269302019, now seen corresponding path program 1 times [2024-11-01 03:50:08,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:08,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228741272] [2024-11-01 03:50:08,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:08,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:08,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:08,057 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) [2024-11-01 03:50:08,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-01 03:50:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:08,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:08,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-01 03:50:08,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-01 03:50:08,827 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:08,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228741272] [2024-11-01 03:50:08,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [228741272] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:08,827 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:08,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:08,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439936958] [2024-11-01 03:50:08,827 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:08,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:08,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:08,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:08,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:08,829 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:08,859 INFO L93 Difference]: Finished difference Result 119 states and 144 transitions. [2024-11-01 03:50:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:08,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 112 [2024-11-01 03:50:08,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:08,861 INFO L225 Difference]: With dead ends: 119 [2024-11-01 03:50:08,861 INFO L226 Difference]: Without dead ends: 82 [2024-11-01 03:50:08,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:08,862 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:08,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 133 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-01 03:50:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-01 03:50:08,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 70 states have (on average 1.1) internal successors, (77), 70 states have internal predecessors, (77), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2024-11-01 03:50:08,871 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 112 [2024-11-01 03:50:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:08,872 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2024-11-01 03:50:08,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2024-11-01 03:50:08,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-01 03:50:08,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:08,873 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:08,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-01 03:50:09,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:09,074 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:09,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1201909119, now seen corresponding path program 1 times [2024-11-01 03:50:09,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:09,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730902610] [2024-11-01 03:50:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:09,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:09,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:09,077 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) [2024-11-01 03:50:09,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-01 03:50:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:09,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 03:50:09,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-01 03:50:09,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-01 03:50:09,796 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:09,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730902610] [2024-11-01 03:50:09,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1730902610] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 03:50:09,797 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 03:50:09,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 03:50:09,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760930830] [2024-11-01 03:50:09,797 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 03:50:09,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 03:50:09,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:09,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 03:50:09,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:09,798 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:09,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:09,829 INFO L93 Difference]: Finished difference Result 125 states and 150 transitions. [2024-11-01 03:50:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 03:50:09,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2024-11-01 03:50:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:09,833 INFO L225 Difference]: With dead ends: 125 [2024-11-01 03:50:09,833 INFO L226 Difference]: Without dead ends: 85 [2024-11-01 03:50:09,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 03:50:09,834 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:09,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 133 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:50:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-01 03:50:09,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-01 03:50:09,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 73 states have (on average 1.095890410958904) internal successors, (80), 73 states have internal predecessors, (80), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 100 transitions. [2024-11-01 03:50:09,850 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 100 transitions. Word has length 116 [2024-11-01 03:50:09,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:09,851 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 100 transitions. [2024-11-01 03:50:09,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 100 transitions. [2024-11-01 03:50:09,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-01 03:50:09,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:09,855 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:09,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:10,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:10,056 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:10,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:10,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2039319685, now seen corresponding path program 1 times [2024-11-01 03:50:10,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:10,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538384459] [2024-11-01 03:50:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:10,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:10,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:10,059 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) [2024-11-01 03:50:10,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-01 03:50:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:10,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:10,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-01 03:50:10,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-01 03:50:10,912 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:10,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538384459] [2024-11-01 03:50:10,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [538384459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:10,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:10,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:10,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382716096] [2024-11-01 03:50:10,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:10,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:10,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:10,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:10,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:10,915 INFO L87 Difference]: Start difference. First operand 85 states and 100 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:11,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:11,046 INFO L93 Difference]: Finished difference Result 136 states and 163 transitions. [2024-11-01 03:50:11,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 03:50:11,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2024-11-01 03:50:11,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:11,050 INFO L225 Difference]: With dead ends: 136 [2024-11-01 03:50:11,050 INFO L226 Difference]: Without dead ends: 93 [2024-11-01 03:50:11,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:11,050 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:11,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 219 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-01 03:50:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-01 03:50:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2024-11-01 03:50:11,069 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 120 [2024-11-01 03:50:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:11,070 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2024-11-01 03:50:11,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2024-11-01 03:50:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-01 03:50:11,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:11,071 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:11,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-01 03:50:11,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:11,272 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:11,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:11,272 INFO L85 PathProgramCache]: Analyzing trace with hash 366667635, now seen corresponding path program 2 times [2024-11-01 03:50:11,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:11,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324525201] [2024-11-01 03:50:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:11,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:11,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:11,274 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) [2024-11-01 03:50:11,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-01 03:50:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:12,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:12,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-01 03:50:12,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-11-01 03:50:12,112 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:12,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324525201] [2024-11-01 03:50:12,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [324525201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:12,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:12,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:12,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191448090] [2024-11-01 03:50:12,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:12,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:12,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:12,114 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:12,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:12,272 INFO L93 Difference]: Finished difference Result 152 states and 179 transitions. [2024-11-01 03:50:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 03:50:12,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-01 03:50:12,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:12,277 INFO L225 Difference]: With dead ends: 152 [2024-11-01 03:50:12,277 INFO L226 Difference]: Without dead ends: 101 [2024-11-01 03:50:12,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:12,278 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:12,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 219 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-01 03:50:12,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-01 03:50:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.0786516853932584) internal successors, (96), 89 states have internal predecessors, (96), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2024-11-01 03:50:12,301 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 128 [2024-11-01 03:50:12,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:12,302 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2024-11-01 03:50:12,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:12,302 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2024-11-01 03:50:12,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-01 03:50:12,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:12,304 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:12,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-01 03:50:12,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:12,504 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:12,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:12,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1084146795, now seen corresponding path program 3 times [2024-11-01 03:50:12,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:12,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176686680] [2024-11-01 03:50:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:12,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:12,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:12,507 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) [2024-11-01 03:50:12,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-01 03:50:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:13,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:13,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-01 03:50:13,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-11-01 03:50:13,491 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:13,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176686680] [2024-11-01 03:50:13,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1176686680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:13,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:13,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:13,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582515861] [2024-11-01 03:50:13,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:13,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:13,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:13,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:13,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:13,493 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:13,572 INFO L93 Difference]: Finished difference Result 168 states and 195 transitions. [2024-11-01 03:50:13,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 03:50:13,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2024-11-01 03:50:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:13,574 INFO L225 Difference]: With dead ends: 168 [2024-11-01 03:50:13,574 INFO L226 Difference]: Without dead ends: 109 [2024-11-01 03:50:13,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:13,575 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:13,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 219 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-01 03:50:13,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-01 03:50:13,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 97 states have internal predecessors, (104), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2024-11-01 03:50:13,587 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 136 [2024-11-01 03:50:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:13,587 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2024-11-01 03:50:13,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2024-11-01 03:50:13,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-01 03:50:13,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:13,589 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:13,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-01 03:50:13,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:13,789 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:13,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:13,790 INFO L85 PathProgramCache]: Analyzing trace with hash 964601699, now seen corresponding path program 4 times [2024-11-01 03:50:13,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:13,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127358468] [2024-11-01 03:50:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:13,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:13,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:13,791 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) [2024-11-01 03:50:13,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-01 03:50:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:14,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-01 03:50:14,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-01 03:50:14,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-11-01 03:50:14,786 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:14,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127358468] [2024-11-01 03:50:14,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2127358468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:14,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:14,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-11-01 03:50:14,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995834621] [2024-11-01 03:50:14,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:14,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-01 03:50:14,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:14,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-01 03:50:14,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-01 03:50:14,788 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:14,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:14,882 INFO L93 Difference]: Finished difference Result 184 states and 211 transitions. [2024-11-01 03:50:14,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 03:50:14,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 144 [2024-11-01 03:50:14,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:14,884 INFO L225 Difference]: With dead ends: 184 [2024-11-01 03:50:14,885 INFO L226 Difference]: Without dead ends: 117 [2024-11-01 03:50:14,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:50:14,886 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:14,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 305 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:14,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-01 03:50:14,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-01 03:50:14,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 105 states have (on average 1.0666666666666667) internal successors, (112), 105 states have internal predecessors, (112), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2024-11-01 03:50:14,900 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 144 [2024-11-01 03:50:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:14,901 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2024-11-01 03:50:14,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:14,901 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2024-11-01 03:50:14,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-01 03:50:14,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:14,902 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:14,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:15,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:15,103 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:15,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1459965605, now seen corresponding path program 5 times [2024-11-01 03:50:15,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:15,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672919839] [2024-11-01 03:50:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:15,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:15,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:15,106 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) [2024-11-01 03:50:15,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-01 03:50:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:16,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-01 03:50:16,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-01 03:50:16,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-11-01 03:50:16,250 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:16,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672919839] [2024-11-01 03:50:16,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1672919839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:16,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:16,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-01 03:50:16,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935985227] [2024-11-01 03:50:16,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:16,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 03:50:16,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:16,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 03:50:16,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-01 03:50:16,252 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:16,628 INFO L93 Difference]: Finished difference Result 208 states and 239 transitions. [2024-11-01 03:50:16,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-01 03:50:16,629 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 152 [2024-11-01 03:50:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:16,631 INFO L225 Difference]: With dead ends: 208 [2024-11-01 03:50:16,631 INFO L226 Difference]: Without dead ends: 133 [2024-11-01 03:50:16,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-01 03:50:16,632 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:16,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 347 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-01 03:50:16,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-01 03:50:16,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-01 03:50:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 121 states have (on average 1.0661157024793388) internal successors, (129), 121 states have internal predecessors, (129), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 149 transitions. [2024-11-01 03:50:16,668 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 149 transitions. Word has length 152 [2024-11-01 03:50:16,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:16,669 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 149 transitions. [2024-11-01 03:50:16,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 149 transitions. [2024-11-01 03:50:16,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-01 03:50:16,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:16,674 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:16,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-01 03:50:16,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:16,875 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:16,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:16,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1142035881, now seen corresponding path program 6 times [2024-11-01 03:50:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:16,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775430465] [2024-11-01 03:50:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:16,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:16,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:16,877 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) [2024-11-01 03:50:16,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-01 03:50:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:17,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-01 03:50:17,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-01 03:50:17,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-01 03:50:18,080 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:18,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775430465] [2024-11-01 03:50:18,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1775430465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:18,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:18,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-01 03:50:18,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090098704] [2024-11-01 03:50:18,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:18,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 03:50:18,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:18,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 03:50:18,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-01 03:50:18,083 INFO L87 Difference]: Start difference. First operand 133 states and 149 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:18,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:18,379 INFO L93 Difference]: Finished difference Result 267 states and 306 transitions. [2024-11-01 03:50:18,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-01 03:50:18,380 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 156 [2024-11-01 03:50:18,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:18,381 INFO L225 Difference]: With dead ends: 267 [2024-11-01 03:50:18,381 INFO L226 Difference]: Without dead ends: 149 [2024-11-01 03:50:18,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-01 03:50:18,382 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:18,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 442 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:18,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-01 03:50:18,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-01 03:50:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 137 states have (on average 1.0656934306569343) internal successors, (146), 137 states have internal predecessors, (146), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 166 transitions. [2024-11-01 03:50:18,395 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 166 transitions. Word has length 156 [2024-11-01 03:50:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:18,396 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 166 transitions. [2024-11-01 03:50:18,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 166 transitions. [2024-11-01 03:50:18,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-01 03:50:18,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:18,397 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:18,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-01 03:50:18,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:18,598 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:18,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:18,599 INFO L85 PathProgramCache]: Analyzing trace with hash 803876827, now seen corresponding path program 7 times [2024-11-01 03:50:18,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:18,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175707966] [2024-11-01 03:50:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:18,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:18,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:18,601 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) [2024-11-01 03:50:18,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-01 03:50:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:19,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-01 03:50:19,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2024-11-01 03:50:19,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2024-11-01 03:50:19,808 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:19,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175707966] [2024-11-01 03:50:19,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1175707966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:19,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:19,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-01 03:50:19,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908118189] [2024-11-01 03:50:19,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:19,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 03:50:19,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 03:50:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-01 03:50:19,811 INFO L87 Difference]: Start difference. First operand 149 states and 166 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:20,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:20,073 INFO L93 Difference]: Finished difference Result 269 states and 308 transitions. [2024-11-01 03:50:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-01 03:50:20,074 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 160 [2024-11-01 03:50:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:20,075 INFO L225 Difference]: With dead ends: 269 [2024-11-01 03:50:20,075 INFO L226 Difference]: Without dead ends: 165 [2024-11-01 03:50:20,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-01 03:50:20,076 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:20,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 562 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-01 03:50:20,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-01 03:50:20,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 153 states have (on average 1.065359477124183) internal successors, (163), 153 states have internal predecessors, (163), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:20,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 183 transitions. [2024-11-01 03:50:20,095 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 183 transitions. Word has length 160 [2024-11-01 03:50:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:20,096 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 183 transitions. [2024-11-01 03:50:20,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 03:50:20,096 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 183 transitions. [2024-11-01 03:50:20,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-01 03:50:20,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:20,098 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:20,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-01 03:50:20,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:20,299 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:20,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1500550111, now seen corresponding path program 8 times [2024-11-01 03:50:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:20,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945766063] [2024-11-01 03:50:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:20,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:20,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:20,301 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) [2024-11-01 03:50:20,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-01 03:50:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:21,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-01 03:50:21,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-01 03:50:21,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2024-11-01 03:50:21,610 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:21,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945766063] [2024-11-01 03:50:21,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [945766063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:21,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:21,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-01 03:50:21,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922871724] [2024-11-01 03:50:21,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:21,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 03:50:21,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:21,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 03:50:21,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-01 03:50:21,613 INFO L87 Difference]: Start difference. First operand 165 states and 183 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:21,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:21,951 INFO L93 Difference]: Finished difference Result 272 states and 307 transitions. [2024-11-01 03:50:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-01 03:50:21,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 164 [2024-11-01 03:50:21,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:21,955 INFO L225 Difference]: With dead ends: 272 [2024-11-01 03:50:21,955 INFO L226 Difference]: Without dead ends: 181 [2024-11-01 03:50:21,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-01 03:50:21,957 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:21,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 390 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-01 03:50:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-01 03:50:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-01 03:50:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 169 states have (on average 1.0650887573964498) internal successors, (180), 169 states have internal predecessors, (180), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 200 transitions. [2024-11-01 03:50:21,972 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 200 transitions. Word has length 164 [2024-11-01 03:50:21,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:21,973 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 200 transitions. [2024-11-01 03:50:21,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 200 transitions. [2024-11-01 03:50:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-01 03:50:21,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:21,975 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:22,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:22,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:22,176 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:22,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:22,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2010039461, now seen corresponding path program 9 times [2024-11-01 03:50:22,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:22,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476348966] [2024-11-01 03:50:22,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:22,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:22,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:22,178 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) [2024-11-01 03:50:22,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-01 03:50:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:23,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-01 03:50:23,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-01 03:50:23,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2024-11-01 03:50:23,468 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:23,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476348966] [2024-11-01 03:50:23,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1476348966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:23,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:23,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-01 03:50:23,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768408358] [2024-11-01 03:50:23,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:23,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 03:50:23,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:23,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 03:50:23,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-01 03:50:23,470 INFO L87 Difference]: Start difference. First operand 181 states and 200 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:23,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:23,826 INFO L93 Difference]: Finished difference Result 304 states and 341 transitions. [2024-11-01 03:50:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-01 03:50:23,827 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 168 [2024-11-01 03:50:23,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:23,828 INFO L225 Difference]: With dead ends: 304 [2024-11-01 03:50:23,828 INFO L226 Difference]: Without dead ends: 197 [2024-11-01 03:50:23,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-01 03:50:23,829 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 8 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:23,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 390 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-01 03:50:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-01 03:50:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 185 states have (on average 1.0648648648648649) internal successors, (197), 185 states have internal predecessors, (197), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 217 transitions. [2024-11-01 03:50:23,846 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 217 transitions. Word has length 168 [2024-11-01 03:50:23,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:23,846 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 217 transitions. [2024-11-01 03:50:23,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:23,846 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 217 transitions. [2024-11-01 03:50:23,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-01 03:50:23,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:23,848 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:23,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-01 03:50:24,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:24,049 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:24,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:24,049 INFO L85 PathProgramCache]: Analyzing trace with hash -952499241, now seen corresponding path program 10 times [2024-11-01 03:50:24,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:24,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22984057] [2024-11-01 03:50:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:24,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:24,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:24,051 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) [2024-11-01 03:50:24,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-01 03:50:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:25,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-01 03:50:25,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-01 03:50:25,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-01 03:50:25,324 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:25,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22984057] [2024-11-01 03:50:25,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [22984057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:25,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:25,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2024-11-01 03:50:25,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930417780] [2024-11-01 03:50:25,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:25,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 03:50:25,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:25,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 03:50:25,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-01 03:50:25,326 INFO L87 Difference]: Start difference. First operand 197 states and 217 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:25,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:25,582 INFO L93 Difference]: Finished difference Result 336 states and 375 transitions. [2024-11-01 03:50:25,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-01 03:50:25,582 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 172 [2024-11-01 03:50:25,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:25,584 INFO L225 Difference]: With dead ends: 336 [2024-11-01 03:50:25,584 INFO L226 Difference]: Without dead ends: 213 [2024-11-01 03:50:25,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-01 03:50:25,585 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:25,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 390 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 03:50:25,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-01 03:50:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-11-01 03:50:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 201 states have (on average 1.064676616915423) internal successors, (214), 201 states have internal predecessors, (214), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:50:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2024-11-01 03:50:25,602 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 172 [2024-11-01 03:50:25,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:25,603 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2024-11-01 03:50:25,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 03:50:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2024-11-01 03:50:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-01 03:50:25,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:25,604 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:25,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-01 03:50:25,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:25,804 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:25,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash 197516755, now seen corresponding path program 11 times [2024-11-01 03:50:25,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:25,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492414805] [2024-11-01 03:50:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:25,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:25,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:25,807 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) [2024-11-01 03:50:25,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-01 03:50:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:27,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-01 03:50:27,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 12 proven. 49 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-11-01 03:50:27,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 33 proven. 28 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-11-01 03:50:31,059 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:31,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492414805] [2024-11-01 03:50:31,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [492414805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:50:31,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:50:31,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2024-11-01 03:50:31,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786292967] [2024-11-01 03:50:31,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:50:31,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-01 03:50:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:50:31,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-01 03:50:31,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2024-11-01 03:50:31,061 INFO L87 Difference]: Start difference. First operand 213 states and 234 transitions. Second operand has 26 states, 24 states have (on average 4.0) internal successors, (96), 25 states have internal predecessors, (96), 6 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-01 03:50:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:50:32,206 INFO L93 Difference]: Finished difference Result 409 states and 447 transitions. [2024-11-01 03:50:32,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-01 03:50:32,207 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.0) internal successors, (96), 25 states have internal predecessors, (96), 6 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 176 [2024-11-01 03:50:32,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:50:32,209 INFO L225 Difference]: With dead ends: 409 [2024-11-01 03:50:32,209 INFO L226 Difference]: Without dead ends: 407 [2024-11-01 03:50:32,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2024-11-01 03:50:32,210 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 207 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-01 03:50:32,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 562 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-01 03:50:32,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-11-01 03:50:32,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 346. [2024-11-01 03:50:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 329 states have (on average 1.0638297872340425) internal successors, (350), 329 states have internal predecessors, (350), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-01 03:50:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 380 transitions. [2024-11-01 03:50:32,236 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 380 transitions. Word has length 176 [2024-11-01 03:50:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:50:32,236 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 380 transitions. [2024-11-01 03:50:32,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.0) internal successors, (96), 25 states have internal predecessors, (96), 6 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-01 03:50:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 380 transitions. [2024-11-01 03:50:32,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-01 03:50:32,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:50:32,238 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:50:32,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-01 03:50:32,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:32,439 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:50:32,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:50:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1897711676, now seen corresponding path program 12 times [2024-11-01 03:50:32,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:50:32,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489493063] [2024-11-01 03:50:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:50:32,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:32,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:50:32,441 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) [2024-11-01 03:50:32,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-01 03:50:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:50:33,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 213 conjuncts are in the unsatisfiable core [2024-11-01 03:50:34,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:50:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 51 proven. 670 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2024-11-01 03:50:43,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:50:51,932 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-01 03:50:51,932 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 101 [2024-11-01 03:50:51,933 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:50:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489493063] [2024-11-01 03:50:51,933 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-01 03:50:51,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-01 03:50:52,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:50:52,135 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:912) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:553) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:324) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 44 more [2024-11-01 03:50:52,139 INFO L158 Benchmark]: Toolchain (without parser) took 54619.68ms. Allocated memory was 205.5MB in the beginning and 1.0GB in the end (delta: 822.1MB). Free memory was 179.9MB in the beginning and 649.6MB in the end (delta: -469.7MB). Peak memory consumption was 353.5MB. Max. memory is 8.0GB. [2024-11-01 03:50:52,139 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 205.5MB. Free memory is still 181.9MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-01 03:50:52,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 663.33ms. Allocated memory is still 205.5MB. Free memory was 179.9MB in the beginning and 142.7MB in the end (delta: 37.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2024-11-01 03:50:52,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.06ms. Allocated memory is still 205.5MB. Free memory was 142.7MB in the beginning and 135.4MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2024-11-01 03:50:52,142 INFO L158 Benchmark]: Boogie Preprocessor took 138.38ms. Allocated memory is still 205.5MB. Free memory was 135.4MB in the beginning and 125.9MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2024-11-01 03:50:52,143 INFO L158 Benchmark]: RCFGBuilder took 1140.18ms. Allocated memory was 205.5MB in the beginning and 249.6MB in the end (delta: 44.0MB). Free memory was 125.9MB in the beginning and 127.2MB in the end (delta: -1.3MB). Peak memory consumption was 43.3MB. Max. memory is 8.0GB. [2024-11-01 03:50:52,143 INFO L158 Benchmark]: TraceAbstraction took 52567.82ms. Allocated memory was 249.6MB in the beginning and 1.0GB in the end (delta: 778.0MB). Free memory was 126.7MB in the beginning and 649.6MB in the end (delta: -522.9MB). Peak memory consumption was 256.8MB. Max. memory is 8.0GB. [2024-11-01 03:50:52,144 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 205.5MB. Free memory is still 181.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 663.33ms. Allocated memory is still 205.5MB. Free memory was 179.9MB in the beginning and 142.7MB in the end (delta: 37.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 104.06ms. Allocated memory is still 205.5MB. Free memory was 142.7MB in the beginning and 135.4MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 138.38ms. Allocated memory is still 205.5MB. Free memory was 135.4MB in the beginning and 125.9MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 1140.18ms. Allocated memory was 205.5MB in the beginning and 249.6MB in the end (delta: 44.0MB). Free memory was 125.9MB in the beginning and 127.2MB in the end (delta: -1.3MB). Peak memory consumption was 43.3MB. Max. memory is 8.0GB. * TraceAbstraction took 52567.82ms. Allocated memory was 249.6MB in the beginning and 1.0GB in the end (delta: 778.0MB). Free memory was 126.7MB in the beginning and 649.6MB in the end (delta: -522.9MB). Peak memory consumption was 256.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...