/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 14:10:15,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 14:10:15,232 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 14:10:15,237 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 14:10:15,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 14:10:15,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 14:10:15,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 14:10:15,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 14:10:15,260 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 14:10:15,261 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 14:10:15,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 14:10:15,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 14:10:15,262 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 14:10:15,263 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 14:10:15,263 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 14:10:15,263 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 14:10:15,263 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 14:10:15,264 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 14:10:15,264 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 14:10:15,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 14:10:15,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 14:10:15,267 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 14:10:15,267 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 14:10:15,267 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 14:10:15,267 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 14:10:15,267 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 14:10:15,267 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 14:10:15,268 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 14:10:15,268 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 14:10:15,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 14:10:15,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 14:10:15,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:10:15,268 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 14:10:15,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 14:10:15,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 14:10:15,269 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 14:10:15,269 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 14:10:15,269 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 14:10:15,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 14:10:15,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 14:10:15,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 14:10:15,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 14:10:15,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 14:10:15,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 14:10:15,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 14:10:15,446 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 14:10:15,447 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 14:10:15,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2024-11-05 14:10:16,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 14:10:16,898 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 14:10:16,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2024-11-05 14:10:16,912 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5046fab53/2e145f474799474d8738705ce19e312c/FLAGc562ecfc4 [2024-11-05 14:10:17,234 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5046fab53/2e145f474799474d8738705ce19e312c [2024-11-05 14:10:17,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 14:10:17,237 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 14:10:17,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 14:10:17,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 14:10:17,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 14:10:17,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2a482c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17, skipping insertion in model container [2024-11-05 14:10:17,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,279 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 14:10:17,422 WARN L250 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.safe_arbitrated_fifos_n2d8w8.c[1268,1281] [2024-11-05 14:10:17,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:10:17,610 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 14:10:17,618 WARN L250 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.safe_arbitrated_fifos_n2d8w8.c[1268,1281] [2024-11-05 14:10:17,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 14:10:17,709 INFO L204 MainTranslator]: Completed translation [2024-11-05 14:10:17,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17 WrapperNode [2024-11-05 14:10:17,710 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 14:10:17,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 14:10:17,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 14:10:17,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 14:10:17,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,736 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,782 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 959 [2024-11-05 14:10:17,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 14:10:17,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 14:10:17,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 14:10:17,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 14:10:17,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,835 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]. [2024-11-05 14:10:17,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,894 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,906 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 14:10:17,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 14:10:17,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 14:10:17,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 14:10:17,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (1/1) ... [2024-11-05 14:10:17,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 14:10:17,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 14:10:17,952 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) [2024-11-05 14:10:17,954 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 [2024-11-05 14:10:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 14:10:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-05 14:10:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-05 14:10:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-05 14:10:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 14:10:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 14:10:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 14:10:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 14:10:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 14:10:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 14:10:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 14:10:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 14:10:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-05 14:10:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-05 14:10:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-05 14:10:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 14:10:18,129 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 14:10:18,130 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 14:10:18,755 INFO L? ?]: Removed 681 outVars from TransFormulas that were not future-live. [2024-11-05 14:10:18,755 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 14:10:18,765 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 14:10:18,765 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-05 14:10:18,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:10:18 BoogieIcfgContainer [2024-11-05 14:10:18,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 14:10:18,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 14:10:18,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 14:10:18,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 14:10:18,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:10:17" (1/3) ... [2024-11-05 14:10:18,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad67496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:10:18, skipping insertion in model container [2024-11-05 14:10:18,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:10:17" (2/3) ... [2024-11-05 14:10:18,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad67496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:10:18, skipping insertion in model container [2024-11-05 14:10:18,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:10:18" (3/3) ... [2024-11-05 14:10:18,775 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2024-11-05 14:10:18,786 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 14:10:18,787 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 14:10:18,833 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 14:10:18,838 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;@4dbd3de7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 14:10:18,839 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 14:10:18,841 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) [2024-11-05 14:10:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-05 14:10:18,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:18,848 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] [2024-11-05 14:10:18,848 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:18,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1919498836, now seen corresponding path program 1 times [2024-11-05 14:10:18,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:18,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991657953] [2024-11-05 14:10:18,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:18,861 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:18,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:18,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:18,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 14:10:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:19,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 14:10:19,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-05 14:10:19,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-05 14:10:19,227 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:19,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991657953] [2024-11-05 14:10:19,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1991657953] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:19,228 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:19,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 14:10:19,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212366261] [2024-11-05 14:10:19,231 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:19,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 14:10:19,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:19,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 14:10:19,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 14:10:19,250 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-05 14:10:19,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:19,267 INFO L93 Difference]: Finished difference Result 77 states and 117 transitions. [2024-11-05 14:10:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 14:10:19,269 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2024-11-05 14:10:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:19,274 INFO L225 Difference]: With dead ends: 77 [2024-11-05 14:10:19,274 INFO L226 Difference]: Without dead ends: 39 [2024-11-05 14:10:19,276 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 [2024-11-05 14:10:19,279 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 [2024-11-05 14:10:19,281 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] [2024-11-05 14:10:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-05 14:10:19,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-05 14:10:19,303 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) [2024-11-05 14:10:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-05 14:10:19,305 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 39 [2024-11-05 14:10:19,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:19,305 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-05 14:10:19,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-05 14:10:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-05 14:10:19,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-05 14:10:19,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:19,306 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] [2024-11-05 14:10:19,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-05 14:10:19,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:19,508 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:19,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:19,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1633554172, now seen corresponding path program 1 times [2024-11-05 14:10:19,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:19,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689281886] [2024-11-05 14:10:19,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:19,509 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:19,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:19,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:19,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 14:10:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:19,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:10:19,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:19,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:19,823 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689281886] [2024-11-05 14:10:19,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1689281886] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:19,824 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:19,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:10:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253102826] [2024-11-05 14:10:19,824 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:19,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:10:19,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:10:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:19,826 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) [2024-11-05 14:10:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:19,848 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2024-11-05 14:10:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:10:19,849 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 [2024-11-05 14:10:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:19,850 INFO L225 Difference]: With dead ends: 77 [2024-11-05 14:10:19,850 INFO L226 Difference]: Without dead ends: 42 [2024-11-05 14:10:19,850 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 [2024-11-05 14:10:19,851 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 [2024-11-05 14:10:19,851 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] [2024-11-05 14:10:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-05 14:10:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-05 14:10:19,855 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) [2024-11-05 14:10:19,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2024-11-05 14:10:19,856 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 39 [2024-11-05 14:10:19,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:19,857 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2024-11-05 14:10:19,857 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) [2024-11-05 14:10:19,857 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2024-11-05 14:10:19,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-05 14:10:19,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:19,858 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] [2024-11-05 14:10:19,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:20,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:20,060 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:20,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:20,062 INFO L85 PathProgramCache]: Analyzing trace with hash -682782464, now seen corresponding path program 1 times [2024-11-05 14:10:20,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:20,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117291555] [2024-11-05 14:10:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:20,062 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:20,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:20,064 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:20,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 14:10:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:20,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:10:20,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:20,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:20,372 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:20,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117291555] [2024-11-05 14:10:20,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1117291555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:20,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:20,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:10:20,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663762745] [2024-11-05 14:10:20,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:20,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:10:20,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:20,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:10:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:10:20,375 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2024-11-05 14:10:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:20,433 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2024-11-05 14:10:20,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 14:10:20,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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 [2024-11-05 14:10:20,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:20,436 INFO L225 Difference]: With dead ends: 85 [2024-11-05 14:10:20,436 INFO L226 Difference]: Without dead ends: 50 [2024-11-05 14:10:20,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:10:20,437 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:20,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 223 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:10:20,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-05 14:10:20,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-05 14:10:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 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) [2024-11-05 14:10:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-05 14:10:20,445 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 43 [2024-11-05 14:10:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:20,445 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-05 14:10:20,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2024-11-05 14:10:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-05 14:10:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-05 14:10:20,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:20,447 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-05 14:10:20,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-05 14:10:20,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:20,648 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:20,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1659549432, now seen corresponding path program 2 times [2024-11-05 14:10:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:20,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139014558] [2024-11-05 14:10:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:20,648 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:20,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:20,650 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:20,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 14:10:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:20,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-05 14:10:20,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:20,952 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:20,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 14:10:21,051 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:21,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139014558] [2024-11-05 14:10:21,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [139014558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:21,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:21,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-05 14:10:21,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188648355] [2024-11-05 14:10:21,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:21,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-05 14:10:21,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:21,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-05 14:10:21,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:21,053 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 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) [2024-11-05 14:10:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:21,161 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2024-11-05 14:10:21,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 14:10:21,162 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 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 51 [2024-11-05 14:10:21,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:21,163 INFO L225 Difference]: With dead ends: 89 [2024-11-05 14:10:21,163 INFO L226 Difference]: Without dead ends: 54 [2024-11-05 14:10:21,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:21,164 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:21,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 355 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:10:21,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-05 14:10:21,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-05 14:10:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 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) [2024-11-05 14:10:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2024-11-05 14:10:21,174 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2024-11-05 14:10:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:21,174 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2024-11-05 14:10:21,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 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) [2024-11-05 14:10:21,174 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2024-11-05 14:10:21,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-05 14:10:21,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:21,175 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 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] [2024-11-05 14:10:21,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-05 14:10:21,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:21,376 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:21,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:21,376 INFO L85 PathProgramCache]: Analyzing trace with hash 488258804, now seen corresponding path program 3 times [2024-11-05 14:10:21,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:21,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037516620] [2024-11-05 14:10:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:21,376 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:21,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:21,378 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:21,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 14:10:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:21,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:10:21,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-05 14:10:21,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-05 14:10:21,647 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:21,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037516620] [2024-11-05 14:10:21,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1037516620] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:21,648 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:21,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:10:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976159584] [2024-11-05 14:10:21,648 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:21,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:10:21,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:21,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:10:21,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:21,649 INFO L87 Difference]: Start difference. First operand 54 states and 64 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) [2024-11-05 14:10:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:21,668 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2024-11-05 14:10:21,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:10:21,670 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 55 [2024-11-05 14:10:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:21,671 INFO L225 Difference]: With dead ends: 89 [2024-11-05 14:10:21,671 INFO L226 Difference]: Without dead ends: 57 [2024-11-05 14:10:21,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:21,672 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 [2024-11-05 14:10:21,672 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] [2024-11-05 14:10:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-05 14:10:21,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-05 14:10:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 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) [2024-11-05 14:10:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-05 14:10:21,679 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 55 [2024-11-05 14:10:21,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:21,679 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-05 14:10:21,679 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) [2024-11-05 14:10:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-05 14:10:21,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-05 14:10:21,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:21,684 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 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] [2024-11-05 14:10:21,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-05 14:10:21,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:21,885 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:21,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:21,885 INFO L85 PathProgramCache]: Analyzing trace with hash -526560144, now seen corresponding path program 1 times [2024-11-05 14:10:21,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:21,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364804086] [2024-11-05 14:10:21,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:21,885 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:21,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:21,887 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:21,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 14:10:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:22,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:10:22,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-05 14:10:22,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-05 14:10:22,214 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:22,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364804086] [2024-11-05 14:10:22,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1364804086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:22,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:22,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:10:22,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412529090] [2024-11-05 14:10:22,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:22,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:10:22,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:10:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:10:22,216 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2024-11-05 14:10:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:22,269 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2024-11-05 14:10:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 14:10:22,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 59 [2024-11-05 14:10:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:22,271 INFO L225 Difference]: With dead ends: 97 [2024-11-05 14:10:22,271 INFO L226 Difference]: Without dead ends: 65 [2024-11-05 14:10:22,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:10:22,272 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:22,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 176 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:10:22,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-05 14:10:22,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-05 14:10:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 58 states have internal predecessors, (65), 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) [2024-11-05 14:10:22,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2024-11-05 14:10:22,277 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 59 [2024-11-05 14:10:22,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:22,277 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2024-11-05 14:10:22,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2024-11-05 14:10:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2024-11-05 14:10:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-05 14:10:22,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:22,277 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 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] [2024-11-05 14:10:22,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:22,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:22,478 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:22,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:22,479 INFO L85 PathProgramCache]: Analyzing trace with hash -47044248, now seen corresponding path program 2 times [2024-11-05 14:10:22,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:22,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670010270] [2024-11-05 14:10:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:22,479 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:22,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:22,481 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:22,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 14:10:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:22,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-05 14:10:22,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-05 14:10:22,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-05 14:10:22,893 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:22,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670010270] [2024-11-05 14:10:22,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [670010270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:22,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:22,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-05 14:10:22,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855660125] [2024-11-05 14:10:22,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:22,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-05 14:10:22,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:22,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-05 14:10:22,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:22,894 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 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) [2024-11-05 14:10:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:23,004 INFO L93 Difference]: Finished difference Result 101 states and 121 transitions. [2024-11-05 14:10:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 14:10:23,008 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 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 67 [2024-11-05 14:10:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:23,008 INFO L225 Difference]: With dead ends: 101 [2024-11-05 14:10:23,008 INFO L226 Difference]: Without dead ends: 69 [2024-11-05 14:10:23,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:23,011 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:23,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 434 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:10:23,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-05 14:10:23,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-05 14:10:23,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 62 states have internal predecessors, (69), 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) [2024-11-05 14:10:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2024-11-05 14:10:23,019 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 67 [2024-11-05 14:10:23,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:23,020 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2024-11-05 14:10:23,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 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) [2024-11-05 14:10:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2024-11-05 14:10:23,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-05 14:10:23,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:23,020 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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] [2024-11-05 14:10:23,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-05 14:10:23,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:23,221 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:23,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:23,222 INFO L85 PathProgramCache]: Analyzing trace with hash -515774748, now seen corresponding path program 3 times [2024-11-05 14:10:23,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:23,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357490986] [2024-11-05 14:10:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:23,223 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:23,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:23,224 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:23,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 14:10:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:23,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-05 14:10:23,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-05 14:10:23,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-05 14:10:24,104 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:24,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357490986] [2024-11-05 14:10:24,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [357490986] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:24,104 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:24,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2024-11-05 14:10:24,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113659300] [2024-11-05 14:10:24,105 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:24,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:10:24,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:24,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:10:24,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:10:24,106 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-05 14:10:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:24,263 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2024-11-05 14:10:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-05 14:10:24,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2024-11-05 14:10:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:24,264 INFO L225 Difference]: With dead ends: 83 [2024-11-05 14:10:24,264 INFO L226 Difference]: Without dead ends: 81 [2024-11-05 14:10:24,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-05 14:10:24,265 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 28 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:24,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 178 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:10:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-05 14:10:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-05 14:10:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 69 states have internal predecessors, (76), 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) [2024-11-05 14:10:24,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2024-11-05 14:10:24,272 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 71 [2024-11-05 14:10:24,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:24,273 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2024-11-05 14:10:24,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-05 14:10:24,273 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2024-11-05 14:10:24,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-05 14:10:24,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:24,274 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-05 14:10:24,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:24,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:24,475 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:24,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1746558445, now seen corresponding path program 1 times [2024-11-05 14:10:24,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:24,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533677138] [2024-11-05 14:10:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:24,476 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:24,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:24,477 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:24,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-05 14:10:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:24,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:10:24,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-05 14:10:24,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-05 14:10:25,004 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:25,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533677138] [2024-11-05 14:10:25,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [533677138] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:25,004 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:25,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:10:25,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082167411] [2024-11-05 14:10:25,004 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:25,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:10:25,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:25,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:10:25,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:25,006 INFO L87 Difference]: Start difference. First operand 81 states and 96 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) [2024-11-05 14:10:25,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:25,049 INFO L93 Difference]: Finished difference Result 115 states and 140 transitions. [2024-11-05 14:10:25,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:10:25,051 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 112 [2024-11-05 14:10:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:25,052 INFO L225 Difference]: With dead ends: 115 [2024-11-05 14:10:25,052 INFO L226 Difference]: Without dead ends: 84 [2024-11-05 14:10:25,053 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 [2024-11-05 14:10:25,053 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 [2024-11-05 14:10:25,053 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] [2024-11-05 14:10:25,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-05 14:10:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-05 14:10:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 72 states have (on average 1.0972222222222223) internal successors, (79), 72 states have internal predecessors, (79), 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) [2024-11-05 14:10:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2024-11-05 14:10:25,064 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 112 [2024-11-05 14:10:25,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:25,064 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2024-11-05 14:10:25,064 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) [2024-11-05 14:10:25,064 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2024-11-05 14:10:25,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-05 14:10:25,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:25,068 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 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] [2024-11-05 14:10:25,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:25,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:25,272 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:25,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:25,272 INFO L85 PathProgramCache]: Analyzing trace with hash -830156913, now seen corresponding path program 1 times [2024-11-05 14:10:25,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:25,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050202516] [2024-11-05 14:10:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:25,273 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:25,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:25,274 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:25,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-05 14:10:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:25,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:10:25,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-05 14:10:25,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-05 14:10:25,792 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:25,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050202516] [2024-11-05 14:10:25,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2050202516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:25,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:25,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:10:25,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216188054] [2024-11-05 14:10:25,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:25,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:10:25,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:10:25,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:10:25,794 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2024-11-05 14:10:25,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:25,878 INFO L93 Difference]: Finished difference Result 126 states and 153 transitions. [2024-11-05 14:10:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 14:10:25,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 [2024-11-05 14:10:25,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:25,881 INFO L225 Difference]: With dead ends: 126 [2024-11-05 14:10:25,881 INFO L226 Difference]: Without dead ends: 92 [2024-11-05 14:10:25,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:10:25,882 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:25,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 176 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:10:25,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-05 14:10:25,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-05 14:10:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 80 states have (on average 1.0875) internal successors, (87), 80 states have internal predecessors, (87), 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) [2024-11-05 14:10:25,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2024-11-05 14:10:25,892 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 116 [2024-11-05 14:10:25,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:25,892 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2024-11-05 14:10:25,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2024-11-05 14:10:25,893 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2024-11-05 14:10:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-05 14:10:25,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:25,893 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-05 14:10:25,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-05 14:10:26,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:26,094 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:26,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:26,094 INFO L85 PathProgramCache]: Analyzing trace with hash 518049927, now seen corresponding path program 2 times [2024-11-05 14:10:26,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:26,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089889856] [2024-11-05 14:10:26,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:26,095 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:26,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:26,096 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:26,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-05 14:10:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:26,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-05 14:10:26,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-05 14:10:26,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-05 14:10:26,716 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089889856] [2024-11-05 14:10:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1089889856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:26,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:26,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-05 14:10:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100815016] [2024-11-05 14:10:26,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:26,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-05 14:10:26,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-05 14:10:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:26,718 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 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) [2024-11-05 14:10:26,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:26,881 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2024-11-05 14:10:26,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 14:10:26,884 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 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 124 [2024-11-05 14:10:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:26,885 INFO L225 Difference]: With dead ends: 138 [2024-11-05 14:10:26,885 INFO L226 Difference]: Without dead ends: 96 [2024-11-05 14:10:26,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:26,886 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:26,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 348 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 14:10:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-05 14:10:26,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-05 14:10:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.0833333333333333) internal successors, (91), 84 states have internal predecessors, (91), 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) [2024-11-05 14:10:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2024-11-05 14:10:26,893 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 124 [2024-11-05 14:10:26,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:26,893 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2024-11-05 14:10:26,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 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) [2024-11-05 14:10:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2024-11-05 14:10:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-05 14:10:26,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:26,894 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-05 14:10:26,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-05 14:10:27,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:27,097 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:27,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash -291789821, now seen corresponding path program 3 times [2024-11-05 14:10:27,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:27,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004632077] [2024-11-05 14:10:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:27,098 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:27,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:27,099 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:27,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-05 14:10:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:27,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:10:27,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-05 14:10:27,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-05 14:10:27,647 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:27,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004632077] [2024-11-05 14:10:27,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2004632077] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:27,647 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:27,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:10:27,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060395095] [2024-11-05 14:10:27,647 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:27,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:10:27,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:10:27,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:27,648 INFO L87 Difference]: Start difference. First operand 96 states and 111 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) [2024-11-05 14:10:27,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:27,674 INFO L93 Difference]: Finished difference Result 145 states and 170 transitions. [2024-11-05 14:10:27,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:10:27,675 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 128 [2024-11-05 14:10:27,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:27,676 INFO L225 Difference]: With dead ends: 145 [2024-11-05 14:10:27,676 INFO L226 Difference]: Without dead ends: 99 [2024-11-05 14:10:27,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:27,676 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 [2024-11-05 14:10:27,677 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] [2024-11-05 14:10:27,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-05 14:10:27,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-05 14:10:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 87 states have (on average 1.0804597701149425) internal successors, (94), 87 states have internal predecessors, (94), 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) [2024-11-05 14:10:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2024-11-05 14:10:27,690 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 128 [2024-11-05 14:10:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:27,690 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2024-11-05 14:10:27,694 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) [2024-11-05 14:10:27,694 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2024-11-05 14:10:27,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-05 14:10:27,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:27,695 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 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] [2024-11-05 14:10:27,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Ended with exit code 0 [2024-11-05 14:10:27,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:27,896 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:27,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:27,896 INFO L85 PathProgramCache]: Analyzing trace with hash -297563905, now seen corresponding path program 1 times [2024-11-05 14:10:27,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:27,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999888392] [2024-11-05 14:10:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:27,896 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:27,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:27,897 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:27,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-05 14:10:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:28,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:10:28,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-05 14:10:28,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-05 14:10:28,530 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:28,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999888392] [2024-11-05 14:10:28,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1999888392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:28,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:28,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:10:28,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064505020] [2024-11-05 14:10:28,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:28,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:10:28,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:28,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:10:28,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:10:28,531 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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) [2024-11-05 14:10:28,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:28,609 INFO L93 Difference]: Finished difference Result 156 states and 183 transitions. [2024-11-05 14:10:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 14:10:28,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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 132 [2024-11-05 14:10:28,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:28,610 INFO L225 Difference]: With dead ends: 156 [2024-11-05 14:10:28,610 INFO L226 Difference]: Without dead ends: 107 [2024-11-05 14:10:28,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:10:28,611 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:28,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 219 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:10:28,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-05 14:10:28,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-05 14:10:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 95 states have (on average 1.0736842105263158) internal successors, (102), 95 states have internal predecessors, (102), 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) [2024-11-05 14:10:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2024-11-05 14:10:28,618 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 132 [2024-11-05 14:10:28,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:28,618 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2024-11-05 14:10:28,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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) [2024-11-05 14:10:28,618 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2024-11-05 14:10:28,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-05 14:10:28,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:28,619 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-05 14:10:28,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:28,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:28,820 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:28,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1407600393, now seen corresponding path program 2 times [2024-11-05 14:10:28,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:28,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628377062] [2024-11-05 14:10:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:28,821 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:28,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:28,822 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:28,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-05 14:10:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:29,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-05 14:10:29,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-05 14:10:29,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:29,521 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-05 14:10:29,521 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:29,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628377062] [2024-11-05 14:10:29,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [628377062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:29,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:29,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-05 14:10:29,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009121298] [2024-11-05 14:10:29,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:29,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-05 14:10:29,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:29,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-05 14:10:29,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:29,523 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 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) [2024-11-05 14:10:29,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:29,692 INFO L93 Difference]: Finished difference Result 168 states and 193 transitions. [2024-11-05 14:10:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 14:10:29,695 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 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 140 [2024-11-05 14:10:29,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:29,696 INFO L225 Difference]: With dead ends: 168 [2024-11-05 14:10:29,696 INFO L226 Difference]: Without dead ends: 111 [2024-11-05 14:10:29,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:29,697 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:29,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 391 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 14:10:29,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-05 14:10:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-05 14:10:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 99 states have (on average 1.0707070707070707) internal successors, (106), 99 states have internal predecessors, (106), 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) [2024-11-05 14:10:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2024-11-05 14:10:29,708 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 140 [2024-11-05 14:10:29,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:29,709 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2024-11-05 14:10:29,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 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) [2024-11-05 14:10:29,709 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2024-11-05 14:10:29,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-05 14:10:29,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:29,711 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-05 14:10:29,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-05 14:10:29,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:29,912 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:29,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:29,912 INFO L85 PathProgramCache]: Analyzing trace with hash -469367821, now seen corresponding path program 3 times [2024-11-05 14:10:29,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:29,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658961448] [2024-11-05 14:10:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:29,913 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:29,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:29,914 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:29,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-05 14:10:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:30,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:10:30,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-05 14:10:30,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-05 14:10:30,549 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658961448] [2024-11-05 14:10:30,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [658961448] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:30,549 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:30,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:10:30,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013357607] [2024-11-05 14:10:30,549 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:30,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:10:30,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:10:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:30,550 INFO L87 Difference]: Start difference. First operand 111 states and 126 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) [2024-11-05 14:10:30,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:30,568 INFO L93 Difference]: Finished difference Result 175 states and 200 transitions. [2024-11-05 14:10:30,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:10:30,569 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 144 [2024-11-05 14:10:30,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:30,569 INFO L225 Difference]: With dead ends: 175 [2024-11-05 14:10:30,569 INFO L226 Difference]: Without dead ends: 114 [2024-11-05 14:10:30,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:30,570 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 [2024-11-05 14:10:30,570 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] [2024-11-05 14:10:30,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-05 14:10:30,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-05 14:10:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 102 states have (on average 1.0686274509803921) internal successors, (109), 102 states have internal predecessors, (109), 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) [2024-11-05 14:10:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2024-11-05 14:10:30,578 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 144 [2024-11-05 14:10:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:30,578 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2024-11-05 14:10:30,579 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) [2024-11-05 14:10:30,580 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2024-11-05 14:10:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-05 14:10:30,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:30,580 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2024-11-05 14:10:30,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Ended with exit code 0 [2024-11-05 14:10:30,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:30,781 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:30,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:30,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1956806545, now seen corresponding path program 1 times [2024-11-05 14:10:30,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:30,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640634323] [2024-11-05 14:10:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:30,782 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:30,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:30,783 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:30,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-05 14:10:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:31,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:10:31,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:31,419 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-05 14:10:31,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-05 14:10:31,463 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:31,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640634323] [2024-11-05 14:10:31,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1640634323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:31,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:31,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:10:31,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732990985] [2024-11-05 14:10:31,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:31,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:10:31,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:31,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:10:31,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:10:31,464 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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) [2024-11-05 14:10:31,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:31,532 INFO L93 Difference]: Finished difference Result 186 states and 213 transitions. [2024-11-05 14:10:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 14:10:31,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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 148 [2024-11-05 14:10:31,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:31,533 INFO L225 Difference]: With dead ends: 186 [2024-11-05 14:10:31,533 INFO L226 Difference]: Without dead ends: 122 [2024-11-05 14:10:31,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:10:31,534 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:31,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 176 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:10:31,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-05 14:10:31,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-05 14:10:31,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 110 states have (on average 1.0636363636363637) internal successors, (117), 110 states have internal predecessors, (117), 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) [2024-11-05 14:10:31,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 137 transitions. [2024-11-05 14:10:31,540 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 137 transitions. Word has length 148 [2024-11-05 14:10:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:31,541 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 137 transitions. [2024-11-05 14:10:31,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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) [2024-11-05 14:10:31,541 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 137 transitions. [2024-11-05 14:10:31,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-05 14:10:31,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:31,542 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-05 14:10:31,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:31,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:31,742 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:31,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:31,743 INFO L85 PathProgramCache]: Analyzing trace with hash -525623449, now seen corresponding path program 2 times [2024-11-05 14:10:31,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:31,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094632606] [2024-11-05 14:10:31,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:31,743 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:31,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:31,757 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:31,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-05 14:10:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:32,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-05 14:10:32,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-05 14:10:32,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-05 14:10:32,727 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:32,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094632606] [2024-11-05 14:10:32,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2094632606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:32,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:32,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-05 14:10:32,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121725572] [2024-11-05 14:10:32,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:32,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-05 14:10:32,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:32,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-05 14:10:32,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:32,729 INFO L87 Difference]: Start difference. First operand 122 states and 137 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 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) [2024-11-05 14:10:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:32,844 INFO L93 Difference]: Finished difference Result 198 states and 223 transitions. [2024-11-05 14:10:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 14:10:32,844 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 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 156 [2024-11-05 14:10:32,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:32,845 INFO L225 Difference]: With dead ends: 198 [2024-11-05 14:10:32,845 INFO L226 Difference]: Without dead ends: 126 [2024-11-05 14:10:32,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:32,846 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:32,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 434 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:10:32,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-05 14:10:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-05 14:10:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 114 states have (on average 1.0614035087719298) internal successors, (121), 114 states have internal predecessors, (121), 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) [2024-11-05 14:10:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2024-11-05 14:10:32,852 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 156 [2024-11-05 14:10:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:32,853 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2024-11-05 14:10:32,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 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) [2024-11-05 14:10:32,853 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2024-11-05 14:10:32,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-05 14:10:32,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:32,853 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-05 14:10:32,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:33,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:33,058 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:33,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1008746979, now seen corresponding path program 3 times [2024-11-05 14:10:33,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:33,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436456749] [2024-11-05 14:10:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:33,059 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:33,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:33,060 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:33,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Waiting until timeout for monitored process [2024-11-05 14:10:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:33,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 14:10:33,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-05 14:10:33,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-05 14:10:33,781 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436456749] [2024-11-05 14:10:33,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1436456749] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 14:10:33,781 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 14:10:33,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 14:10:33,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361690544] [2024-11-05 14:10:33,782 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 14:10:33,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 14:10:33,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:33,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 14:10:33,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:33,783 INFO L87 Difference]: Start difference. First operand 126 states and 141 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) [2024-11-05 14:10:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:33,803 INFO L93 Difference]: Finished difference Result 205 states and 230 transitions. [2024-11-05 14:10:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 14:10:33,803 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 160 [2024-11-05 14:10:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:33,804 INFO L225 Difference]: With dead ends: 205 [2024-11-05 14:10:33,804 INFO L226 Difference]: Without dead ends: 129 [2024-11-05 14:10:33,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 14:10:33,805 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 [2024-11-05 14:10:33,805 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] [2024-11-05 14:10:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-05 14:10:33,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-05 14:10:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 117 states have (on average 1.0598290598290598) internal successors, (124), 117 states have internal predecessors, (124), 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) [2024-11-05 14:10:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2024-11-05 14:10:33,811 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 160 [2024-11-05 14:10:33,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:33,811 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2024-11-05 14:10:33,812 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) [2024-11-05 14:10:33,812 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2024-11-05 14:10:33,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-05 14:10:33,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:33,813 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 14:10:33,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:34,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:34,014 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:34,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:34,014 INFO L85 PathProgramCache]: Analyzing trace with hash 134624735, now seen corresponding path program 1 times [2024-11-05 14:10:34,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:34,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729005091] [2024-11-05 14:10:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:34,015 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:34,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:34,016 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:34,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Waiting until timeout for monitored process [2024-11-05 14:10:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:34,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 14:10:34,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-05 14:10:34,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-05 14:10:34,824 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:34,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729005091] [2024-11-05 14:10:34,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [729005091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:34,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:34,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 14:10:34,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726917533] [2024-11-05 14:10:34,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:34,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 14:10:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 14:10:34,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-05 14:10:34,825 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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) [2024-11-05 14:10:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:34,885 INFO L93 Difference]: Finished difference Result 216 states and 243 transitions. [2024-11-05 14:10:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 14:10:34,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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 164 [2024-11-05 14:10:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:34,886 INFO L225 Difference]: With dead ends: 216 [2024-11-05 14:10:34,886 INFO L226 Difference]: Without dead ends: 137 [2024-11-05 14:10:34,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-05 14:10:34,887 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:34,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 176 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 14:10:34,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-05 14:10:34,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-05 14:10:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 125 states have (on average 1.056) internal successors, (132), 125 states have internal predecessors, (132), 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) [2024-11-05 14:10:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2024-11-05 14:10:34,894 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 164 [2024-11-05 14:10:34,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:34,894 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2024-11-05 14:10:34,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 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) [2024-11-05 14:10:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2024-11-05 14:10:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-05 14:10:34,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:34,895 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] [2024-11-05 14:10:34,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Forceful destruction successful, exit code 0 [2024-11-05 14:10:35,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:35,095 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:35,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:35,096 INFO L85 PathProgramCache]: Analyzing trace with hash -952499241, now seen corresponding path program 2 times [2024-11-05 14:10:35,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:35,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593621604] [2024-11-05 14:10:35,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:35,096 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:35,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:35,097 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:35,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Waiting until timeout for monitored process [2024-11-05 14:10:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:35,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-05 14:10:35,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-05 14:10:35,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 14:10:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-05 14:10:35,979 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:10:35,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593621604] [2024-11-05 14:10:35,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [593621604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 14:10:35,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 14:10:35,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-05 14:10:35,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065097965] [2024-11-05 14:10:35,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 14:10:35,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-05 14:10:35,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 14:10:35,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-05 14:10:35,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:35,982 INFO L87 Difference]: Start difference. First operand 137 states and 152 transitions. Second operand has 16 states, 16 states have (on average 4.5) internal successors, (72), 16 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) [2024-11-05 14:10:36,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 14:10:36,083 INFO L93 Difference]: Finished difference Result 228 states and 253 transitions. [2024-11-05 14:10:36,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 14:10:36,083 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 16 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 [2024-11-05 14:10:36,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 14:10:36,084 INFO L225 Difference]: With dead ends: 228 [2024-11-05 14:10:36,084 INFO L226 Difference]: Without dead ends: 141 [2024-11-05 14:10:36,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-05 14:10:36,085 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 14:10:36,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 520 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 14:10:36,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-05 14:10:36,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-05 14:10:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 129 states have (on average 1.054263565891473) internal successors, (136), 129 states have internal predecessors, (136), 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) [2024-11-05 14:10:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 156 transitions. [2024-11-05 14:10:36,092 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 156 transitions. Word has length 172 [2024-11-05 14:10:36,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 14:10:36,092 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 156 transitions. [2024-11-05 14:10:36,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 16 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) [2024-11-05 14:10:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 156 transitions. [2024-11-05 14:10:36,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-05 14:10:36,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 14:10:36,093 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] [2024-11-05 14:10:36,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Ended with exit code 0 [2024-11-05 14:10:36,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:36,294 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 14:10:36,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 14:10:36,294 INFO L85 PathProgramCache]: Analyzing trace with hash 197516755, now seen corresponding path program 3 times [2024-11-05 14:10:36,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 14:10:36,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036350629] [2024-11-05 14:10:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 14:10:36,294 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 14:10:36,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:10:36,296 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 14:10:36,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (22)] Waiting until timeout for monitored process [2024-11-05 14:10:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 14:10:37,168 WARN L253 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 902 conjuncts are in the unsatisfiable core [2024-11-05 14:10:37,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 14:10:37,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-05 14:10:37,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2024-11-05 14:10:37,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:37,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2024-11-05 14:10:38,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:38,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2024-11-05 14:10:38,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:38,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 73 [2024-11-05 14:10:38,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:38,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 88 [2024-11-05 14:10:39,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:39,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 103 [2024-11-05 14:10:39,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:39,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 118 [2024-11-05 14:10:40,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-05 14:10:40,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2024-11-05 14:10:41,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:41,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2024-11-05 14:10:42,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:42,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2024-11-05 14:10:42,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:42,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 73 [2024-11-05 14:10:43,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:43,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 88 [2024-11-05 14:10:44,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:44,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 103 [2024-11-05 14:10:45,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-05 14:10:45,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 118 [2024-11-05 14:11:12,030 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") [2024-11-05 14:11:12,030 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 14:11:12,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036350629] [2024-11-05 14:11:12,031 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-05 14:11:12,034 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 [2024-11-05 14:11:12,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (22)] Ended with exit code 0 [2024-11-05 14:11:12,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 14:11:12,232 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.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:947) 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.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:290) 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 [2024-11-05 14:11:12,235 INFO L158 Benchmark]: Toolchain (without parser) took 54998.64ms. Allocated memory was 210.8MB in the beginning and 924.8MB in the end (delta: 714.1MB). Free memory was 151.3MB in the beginning and 667.9MB in the end (delta: -516.6MB). Peak memory consumption was 198.6MB. Max. memory is 8.0GB. [2024-11-05 14:11:12,236 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 210.8MB. Free memory is still 162.9MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-05 14:11:12,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 472.45ms. Allocated memory is still 210.8MB. Free memory was 151.3MB in the beginning and 114.2MB in the end (delta: 37.1MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2024-11-05 14:11:12,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.80ms. Allocated memory is still 210.8MB. Free memory was 114.2MB in the beginning and 106.8MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2024-11-05 14:11:12,236 INFO L158 Benchmark]: Boogie Preprocessor took 141.77ms. Allocated memory was 210.8MB in the beginning and 335.5MB in the end (delta: 124.8MB). Free memory was 106.4MB in the beginning and 297.6MB in the end (delta: -191.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2024-11-05 14:11:12,236 INFO L158 Benchmark]: RCFGBuilder took 841.31ms. Allocated memory is still 335.5MB. Free memory was 297.6MB in the beginning and 196.9MB in the end (delta: 100.7MB). Peak memory consumption was 100.7MB. Max. memory is 8.0GB. [2024-11-05 14:11:12,236 INFO L158 Benchmark]: TraceAbstraction took 53467.10ms. Allocated memory was 335.5MB in the beginning and 924.8MB in the end (delta: 589.3MB). Free memory was 195.9MB in the beginning and 667.9MB in the end (delta: -472.0MB). Peak memory consumption was 116.8MB. Max. memory is 8.0GB. [2024-11-05 14:11:12,238 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 210.8MB. Free memory is still 162.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 472.45ms. Allocated memory is still 210.8MB. Free memory was 151.3MB in the beginning and 114.2MB in the end (delta: 37.1MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 71.80ms. Allocated memory is still 210.8MB. Free memory was 114.2MB in the beginning and 106.8MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 141.77ms. Allocated memory was 210.8MB in the beginning and 335.5MB in the end (delta: 124.8MB). Free memory was 106.4MB in the beginning and 297.6MB in the end (delta: -191.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * RCFGBuilder took 841.31ms. Allocated memory is still 335.5MB. Free memory was 297.6MB in the beginning and 196.9MB in the end (delta: 100.7MB). Peak memory consumption was 100.7MB. Max. memory is 8.0GB. * TraceAbstraction took 53467.10ms. Allocated memory was 335.5MB in the beginning and 924.8MB in the end (delta: 589.3MB). Free memory was 195.9MB in the beginning and 667.9MB in the end (delta: -472.0MB). Peak memory consumption was 116.8MB. 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...