/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-356b6ba-m [2024-11-01 20:31:40,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 20:31:41,054 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 20:31:41,059 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 20:31:41,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 20:31:41,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 20:31:41,084 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 20:31:41,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 20:31:41,085 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 20:31:41,085 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 20:31:41,085 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 20:31:41,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 20:31:41,086 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 20:31:41,086 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 20:31:41,087 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 20:31:41,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 20:31:41,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 20:31:41,087 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 20:31:41,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 20:31:41,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 20:31:41,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 20:31:41,093 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 20:31:41,094 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 20:31:41,094 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 20:31:41,094 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 20:31:41,094 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 20:31:41,094 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 20:31:41,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 20:31:41,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 20:31:41,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 20:31:41,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 20:31:41,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 20:31:41,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 20:31:41,096 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 20:31:41,096 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 20:31:41,096 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 20:31:41,096 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 20:31:41,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 20:31:41,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 20:31:41,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 20:31:41,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 20:31:41,097 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 20:31:41,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-01 20:31:41,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 20:31:41,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 20:31:41,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 20:31:41,360 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 20:31:41,360 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 20:31:41,361 INFO L431 ainManager$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 [2024-11-01 20:31:42,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 20:31:42,914 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 20:31:42,916 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2024-11-01 20:31:42,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5429fe3a/7158735b32eb4c66807dfe445c16165d/FLAGd90ee04e5 [2024-11-01 20:31:42,945 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5429fe3a/7158735b32eb4c66807dfe445c16165d [2024-11-01 20:31:42,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 20:31:42,949 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 20:31:42,949 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 20:31:42,949 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 20:31:42,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 20:31:42,954 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:31:42" (1/1) ... [2024-11-01 20:31:42,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fb0bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:42, skipping insertion in model container [2024-11-01 20:31:42,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:31:42" (1/1) ... [2024-11-01 20:31:43,003 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 20:31:43,155 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c[1268,1281] [2024-11-01 20:31:43,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 20:31:43,298 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 20:31:43,306 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c[1268,1281] [2024-11-01 20:31:43,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 20:31:43,405 INFO L204 MainTranslator]: Completed translation [2024-11-01 20:31:43,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43 WrapperNode [2024-11-01 20:31:43,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 20:31:43,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 20:31:43,406 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 20:31:43,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 20:31:43,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (1/1) ... [2024-11-01 20:31:43,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (1/1) ... [2024-11-01 20:31:43,486 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 959 [2024-11-01 20:31:43,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 20:31:43,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 20:31:43,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 20:31:43,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 20:31:43,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (1/1) ... [2024-11-01 20:31:43,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (1/1) ... [2024-11-01 20:31:43,519 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (1/1) ... [2024-11-01 20:31:43,549 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 9, 9]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 4, 4]. [2024-11-01 20:31:43,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (1/1) ... [2024-11-01 20:31:43,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (1/1) ... [2024-11-01 20:31:43,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (1/1) ... [2024-11-01 20:31:43,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (1/1) ... [2024-11-01 20:31:43,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (1/1) ... [2024-11-01 20:31:43,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (1/1) ... [2024-11-01 20:31:43,609 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 20:31:43,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 20:31:43,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 20:31:43,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 20:31:43,611 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (1/1) ... [2024-11-01 20:31:43,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 20:31:43,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 20:31:43,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-01 20:31:43,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-01 20:31:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 20:31:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-01 20:31:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-01 20:31:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-01 20:31:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 20:31:43,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-01 20:31:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-01 20:31:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 20:31:43,654 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 20:31:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-01 20:31:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 20:31:43,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 20:31:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-01 20:31:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-01 20:31:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-01 20:31:43,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-01 20:31:43,810 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 20:31:43,811 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 20:31:44,459 INFO L? ?]: Removed 681 outVars from TransFormulas that were not future-live. [2024-11-01 20:31:44,460 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 20:31:44,470 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 20:31:44,470 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-01 20:31:44,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:31:44 BoogieIcfgContainer [2024-11-01 20:31:44,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 20:31:44,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 20:31:44,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 20:31:44,475 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 20:31:44,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 08:31:42" (1/3) ... [2024-11-01 20:31:44,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fc2746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:31:44, skipping insertion in model container [2024-11-01 20:31:44,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:31:43" (2/3) ... [2024-11-01 20:31:44,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fc2746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:31:44, skipping insertion in model container [2024-11-01 20:31:44,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:31:44" (3/3) ... [2024-11-01 20:31:44,479 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2024-11-01 20:31:44,491 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 20:31:44,491 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 20:31:44,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 20:31:44,545 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;@54c53b4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 20:31:44,545 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 20:31:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:44,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-01 20:31:44,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:44,554 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:44,554 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:44,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:44,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1919498836, now seen corresponding path program 1 times [2024-11-01 20:31:44,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:44,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115408220] [2024-11-01 20:31:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:44,566 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:44,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:44,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:44,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-01 20:31:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:44,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 20:31:44,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-01 20:31:44,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-01 20:31:45,006 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:45,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115408220] [2024-11-01 20:31:45,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1115408220] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:45,006 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:45,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-01 20:31:45,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807603253] [2024-11-01 20:31:45,008 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:45,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 20:31:45,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:45,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 20:31:45,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 20:31:45,027 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) [2024-11-01 20:31:45,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:45,040 INFO L93 Difference]: Finished difference Result 77 states and 117 transitions. [2024-11-01 20:31:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 20:31:45,042 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 [2024-11-01 20:31:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:45,046 INFO L225 Difference]: With dead ends: 77 [2024-11-01 20:31:45,046 INFO L226 Difference]: Without dead ends: 39 [2024-11-01 20:31:45,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 20:31:45,050 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:45,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:45,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-01 20:31:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-01 20:31:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-01 20:31:45,073 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 39 [2024-11-01 20:31:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:45,073 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-01 20:31:45,073 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) [2024-11-01 20:31:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-01 20:31:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-01 20:31:45,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:45,075 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:45,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-01 20:31:45,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:45,276 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:45,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1633554172, now seen corresponding path program 1 times [2024-11-01 20:31:45,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:45,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004809655] [2024-11-01 20:31:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:45,277 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:45,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:45,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:45,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-01 20:31:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:45,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:31:45,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:45,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:45,673 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:45,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004809655] [2024-11-01 20:31:45,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1004809655] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:45,674 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:45,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:31:45,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443051237] [2024-11-01 20:31:45,674 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:45,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:31:45,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:45,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:31:45,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:45,678 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:45,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:45,707 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2024-11-01 20:31:45,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:31:45,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 39 [2024-11-01 20:31:45,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:45,709 INFO L225 Difference]: With dead ends: 77 [2024-11-01 20:31:45,709 INFO L226 Difference]: Without dead ends: 42 [2024-11-01 20:31:45,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:45,710 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:45,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 135 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:45,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-01 20:31:45,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-01 20:31:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-01 20:31:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2024-11-01 20:31:45,719 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 39 [2024-11-01 20:31:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:45,720 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2024-11-01 20:31:45,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2024-11-01 20:31:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-01 20:31:45,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:45,722 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:31:45,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-01 20:31:45,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:45,926 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:45,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash -682782464, now seen corresponding path program 1 times [2024-11-01 20:31:45,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:45,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676573606] [2024-11-01 20:31:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:45,927 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:45,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:45,934 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:45,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-01 20:31:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:46,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:31:46,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:46,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:46,266 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:46,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676573606] [2024-11-01 20:31:46,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [676573606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:46,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:46,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:31:46,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085684806] [2024-11-01 20:31:46,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:46,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:31:46,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:46,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:31:46,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:31:46,268 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) [2024-11-01 20:31:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:46,332 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2024-11-01 20:31:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 20:31:46,333 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 [2024-11-01 20:31:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:46,333 INFO L225 Difference]: With dead ends: 85 [2024-11-01 20:31:46,333 INFO L226 Difference]: Without dead ends: 50 [2024-11-01 20:31:46,334 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 [2024-11-01 20:31:46,335 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 [2024-11-01 20:31:46,335 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] [2024-11-01 20:31:46,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-01 20:31:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-01 20:31:46,339 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) [2024-11-01 20:31:46,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-01 20:31:46,340 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 43 [2024-11-01 20:31:46,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:46,340 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-01 20:31:46,340 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) [2024-11-01 20:31:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-01 20:31:46,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-01 20:31:46,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:46,341 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] [2024-11-01 20:31:46,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-01 20:31:46,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:46,545 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:46,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:46,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1659549432, now seen corresponding path program 2 times [2024-11-01 20:31:46,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:46,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966141102] [2024-11-01 20:31:46,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:46,546 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:46,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:46,552 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:46,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-01 20:31:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:46,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-01 20:31:46,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:46,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-01 20:31:47,024 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:47,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966141102] [2024-11-01 20:31:47,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [966141102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:47,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:47,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-01 20:31:47,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523340799] [2024-11-01 20:31:47,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:47,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-01 20:31:47,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:47,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-01 20:31:47,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-01 20:31:47,026 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) [2024-11-01 20:31:47,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:47,137 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2024-11-01 20:31:47,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 20:31:47,138 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 [2024-11-01 20:31:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:47,139 INFO L225 Difference]: With dead ends: 89 [2024-11-01 20:31:47,139 INFO L226 Difference]: Without dead ends: 54 [2024-11-01 20:31:47,140 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 [2024-11-01 20:31:47,140 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 [2024-11-01 20:31:47,141 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] [2024-11-01 20:31:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-01 20:31:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-01 20:31:47,145 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) [2024-11-01 20:31:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2024-11-01 20:31:47,145 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2024-11-01 20:31:47,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:47,145 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2024-11-01 20:31:47,146 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) [2024-11-01 20:31:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2024-11-01 20:31:47,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-01 20:31:47,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:47,147 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] [2024-11-01 20:31:47,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-01 20:31:47,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:47,351 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:47,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:47,351 INFO L85 PathProgramCache]: Analyzing trace with hash 488258804, now seen corresponding path program 3 times [2024-11-01 20:31:47,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:47,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122154951] [2024-11-01 20:31:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:47,352 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:47,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:47,353 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:47,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-01 20:31:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:47,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:31:47,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-01 20:31:47,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-01 20:31:47,863 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:47,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122154951] [2024-11-01 20:31:47,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2122154951] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:47,864 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:47,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:31:47,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232446071] [2024-11-01 20:31:47,865 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:47,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:31:47,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:47,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:31:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:47,866 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) [2024-11-01 20:31:47,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:47,893 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2024-11-01 20:31:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:31:47,893 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 [2024-11-01 20:31:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:47,894 INFO L225 Difference]: With dead ends: 89 [2024-11-01 20:31:47,894 INFO L226 Difference]: Without dead ends: 57 [2024-11-01 20:31:47,895 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 [2024-11-01 20:31:47,895 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:47,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 90 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-01 20:31:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-01 20:31:47,907 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) [2024-11-01 20:31:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-01 20:31:47,917 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 55 [2024-11-01 20:31:47,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:47,917 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-01 20:31:47,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-01 20:31:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-01 20:31:47,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-01 20:31:47,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:47,918 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] [2024-11-01 20:31:47,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:48,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:48,123 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:48,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash -526560144, now seen corresponding path program 1 times [2024-11-01 20:31:48,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:48,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803173822] [2024-11-01 20:31:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:48,124 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:48,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:48,125 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:48,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-01 20:31:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:48,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:31:48,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-01 20:31:48,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-01 20:31:48,565 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:48,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803173822] [2024-11-01 20:31:48,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1803173822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:48,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:48,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:31:48,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390775650] [2024-11-01 20:31:48,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:48,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:31:48,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:48,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:31:48,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:31:48,567 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) [2024-11-01 20:31:48,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:48,624 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2024-11-01 20:31:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 20:31:48,625 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 [2024-11-01 20:31:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:48,625 INFO L225 Difference]: With dead ends: 97 [2024-11-01 20:31:48,625 INFO L226 Difference]: Without dead ends: 65 [2024-11-01 20:31:48,626 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 [2024-11-01 20:31:48,626 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 [2024-11-01 20:31:48,626 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] [2024-11-01 20:31:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-01 20:31:48,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-01 20:31:48,631 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) [2024-11-01 20:31:48,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2024-11-01 20:31:48,631 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 59 [2024-11-01 20:31:48,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:48,632 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2024-11-01 20:31:48,632 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) [2024-11-01 20:31:48,632 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2024-11-01 20:31:48,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-01 20:31:48,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:48,633 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] [2024-11-01 20:31:48,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:48,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:48,837 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:48,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash -47044248, now seen corresponding path program 2 times [2024-11-01 20:31:48,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:48,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67308566] [2024-11-01 20:31:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:48,838 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:48,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:48,839 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:48,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-01 20:31:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:49,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-01 20:31:49,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-01 20:31:49,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-01 20:31:49,286 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:49,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67308566] [2024-11-01 20:31:49,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [67308566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:49,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:49,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-01 20:31:49,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781965368] [2024-11-01 20:31:49,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:49,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-01 20:31:49,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-01 20:31:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-01 20:31:49,288 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) [2024-11-01 20:31:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:49,379 INFO L93 Difference]: Finished difference Result 101 states and 121 transitions. [2024-11-01 20:31:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 20:31:49,380 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 [2024-11-01 20:31:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:49,380 INFO L225 Difference]: With dead ends: 101 [2024-11-01 20:31:49,380 INFO L226 Difference]: Without dead ends: 69 [2024-11-01 20:31:49,381 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 [2024-11-01 20:31:49,381 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 [2024-11-01 20:31:49,381 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] [2024-11-01 20:31:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-01 20:31:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-01 20:31:49,388 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) [2024-11-01 20:31:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2024-11-01 20:31:49,389 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 67 [2024-11-01 20:31:49,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:49,389 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2024-11-01 20:31:49,389 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) [2024-11-01 20:31:49,389 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2024-11-01 20:31:49,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-01 20:31:49,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:49,390 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] [2024-11-01 20:31:49,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:49,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:49,593 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:49,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:49,594 INFO L85 PathProgramCache]: Analyzing trace with hash -515774748, now seen corresponding path program 3 times [2024-11-01 20:31:49,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:49,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437985626] [2024-11-01 20:31:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:49,595 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:49,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:49,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:49,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-01 20:31:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:49,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-01 20:31:49,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-01 20:31:50,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-01 20:31:50,488 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:50,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437985626] [2024-11-01 20:31:50,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [437985626] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:50,488 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:50,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2024-11-01 20:31:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297097435] [2024-11-01 20:31:50,489 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:50,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:31:50,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:50,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:31:50,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:31:50,490 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) [2024-11-01 20:31:50,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:50,638 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2024-11-01 20:31:50,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-01 20:31:50,639 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 [2024-11-01 20:31:50,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:50,639 INFO L225 Difference]: With dead ends: 83 [2024-11-01 20:31:50,640 INFO L226 Difference]: Without dead ends: 81 [2024-11-01 20:31:50,640 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 [2024-11-01 20:31:50,640 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 [2024-11-01 20:31:50,640 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] [2024-11-01 20:31:50,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-01 20:31:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-01 20:31:50,648 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) [2024-11-01 20:31:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2024-11-01 20:31:50,648 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 71 [2024-11-01 20:31:50,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:50,649 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2024-11-01 20:31:50,649 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) [2024-11-01 20:31:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2024-11-01 20:31:50,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-01 20:31:50,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:50,650 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] [2024-11-01 20:31:50,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-01 20:31:50,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:50,851 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:50,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1746558445, now seen corresponding path program 1 times [2024-11-01 20:31:50,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:50,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698188104] [2024-11-01 20:31:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:50,852 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:50,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:50,853 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:50,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-01 20:31:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:51,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:31:51,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-01 20:31:51,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-01 20:31:51,325 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:51,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698188104] [2024-11-01 20:31:51,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1698188104] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:51,326 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:51,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:31:51,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073262454] [2024-11-01 20:31:51,326 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:51,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:31:51,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:51,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:31:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:51,327 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) [2024-11-01 20:31:51,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:51,361 INFO L93 Difference]: Finished difference Result 115 states and 140 transitions. [2024-11-01 20:31:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:31:51,362 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 [2024-11-01 20:31:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:51,363 INFO L225 Difference]: With dead ends: 115 [2024-11-01 20:31:51,363 INFO L226 Difference]: Without dead ends: 84 [2024-11-01 20:31:51,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:51,364 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:51,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 90 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:51,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-01 20:31:51,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-01 20:31:51,371 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) [2024-11-01 20:31:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2024-11-01 20:31:51,372 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 112 [2024-11-01 20:31:51,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:51,372 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2024-11-01 20:31:51,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:31:51,372 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2024-11-01 20:31:51,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-01 20:31:51,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:51,373 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] [2024-11-01 20:31:51,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:51,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:51,574 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:51,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:51,574 INFO L85 PathProgramCache]: Analyzing trace with hash -830156913, now seen corresponding path program 1 times [2024-11-01 20:31:51,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:51,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557150049] [2024-11-01 20:31:51,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:51,575 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:51,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:51,576 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:51,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-01 20:31:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:52,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:31:52,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-01 20:31:52,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-01 20:31:52,179 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:52,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557150049] [2024-11-01 20:31:52,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [557150049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:52,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:52,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:31:52,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403250035] [2024-11-01 20:31:52,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:52,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:31:52,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:52,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:31:52,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:31:52,181 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) [2024-11-01 20:31:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:52,323 INFO L93 Difference]: Finished difference Result 126 states and 153 transitions. [2024-11-01 20:31:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 20:31:52,327 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 [2024-11-01 20:31:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:52,328 INFO L225 Difference]: With dead ends: 126 [2024-11-01 20:31:52,328 INFO L226 Difference]: Without dead ends: 92 [2024-11-01 20:31:52,328 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 [2024-11-01 20:31:52,329 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 [2024-11-01 20:31:52,329 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] [2024-11-01 20:31:52,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-01 20:31:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-01 20:31:52,346 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) [2024-11-01 20:31:52,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2024-11-01 20:31:52,348 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 116 [2024-11-01 20:31:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:52,349 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2024-11-01 20:31:52,349 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) [2024-11-01 20:31:52,349 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2024-11-01 20:31:52,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-01 20:31:52,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:52,351 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] [2024-11-01 20:31:52,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-01 20:31:52,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:52,551 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:52,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:52,552 INFO L85 PathProgramCache]: Analyzing trace with hash 518049927, now seen corresponding path program 2 times [2024-11-01 20:31:52,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:52,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696239112] [2024-11-01 20:31:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:52,552 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:52,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:52,554 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:52,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-01 20:31:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:53,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-01 20:31:53,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-01 20:31:53,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-01 20:31:53,248 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:53,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696239112] [2024-11-01 20:31:53,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1696239112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:53,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:53,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-01 20:31:53,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223654613] [2024-11-01 20:31:53,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:53,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-01 20:31:53,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:53,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-01 20:31:53,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-01 20:31:53,250 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) [2024-11-01 20:31:53,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:53,456 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2024-11-01 20:31:53,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 20:31:53,459 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 [2024-11-01 20:31:53,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:53,462 INFO L225 Difference]: With dead ends: 138 [2024-11-01 20:31:53,462 INFO L226 Difference]: Without dead ends: 96 [2024-11-01 20:31:53,462 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 [2024-11-01 20:31:53,463 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 [2024-11-01 20:31:53,463 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] [2024-11-01 20:31:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-01 20:31:53,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-01 20:31:53,485 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) [2024-11-01 20:31:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2024-11-01 20:31:53,486 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 124 [2024-11-01 20:31:53,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:53,486 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2024-11-01 20:31:53,486 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) [2024-11-01 20:31:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2024-11-01 20:31:53,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-01 20:31:53,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:53,489 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] [2024-11-01 20:31:53,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-01 20:31:53,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:53,689 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:53,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:53,690 INFO L85 PathProgramCache]: Analyzing trace with hash -291789821, now seen corresponding path program 3 times [2024-11-01 20:31:53,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:53,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125231011] [2024-11-01 20:31:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:53,690 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:53,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:53,691 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:53,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-01 20:31:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:54,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:31:54,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-01 20:31:54,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:54,409 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-01 20:31:54,409 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:54,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125231011] [2024-11-01 20:31:54,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1125231011] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:54,409 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:54,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:31:54,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252163879] [2024-11-01 20:31:54,410 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:54,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:31:54,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:54,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:31:54,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:54,411 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) [2024-11-01 20:31:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:54,440 INFO L93 Difference]: Finished difference Result 145 states and 170 transitions. [2024-11-01 20:31:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:31:54,441 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 [2024-11-01 20:31:54,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:54,441 INFO L225 Difference]: With dead ends: 145 [2024-11-01 20:31:54,441 INFO L226 Difference]: Without dead ends: 99 [2024-11-01 20:31:54,442 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 [2024-11-01 20:31:54,442 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:54,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 133 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:54,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-01 20:31:54,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-01 20:31:54,449 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) [2024-11-01 20:31:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2024-11-01 20:31:54,449 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 128 [2024-11-01 20:31:54,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:54,450 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2024-11-01 20:31:54,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:31:54,450 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2024-11-01 20:31:54,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-01 20:31:54,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:54,451 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] [2024-11-01 20:31:54,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Ended with exit code 0 [2024-11-01 20:31:54,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:54,651 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:54,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:54,653 INFO L85 PathProgramCache]: Analyzing trace with hash -297563905, now seen corresponding path program 1 times [2024-11-01 20:31:54,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:54,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350249282] [2024-11-01 20:31:54,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:54,653 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:54,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:54,655 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:54,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-01 20:31:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:55,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:31:55,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-01 20:31:55,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-01 20:31:55,422 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:55,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350249282] [2024-11-01 20:31:55,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [350249282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:55,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:55,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:31:55,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140165068] [2024-11-01 20:31:55,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:55,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:31:55,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:31:55,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:31:55,424 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) [2024-11-01 20:31:55,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:55,518 INFO L93 Difference]: Finished difference Result 156 states and 183 transitions. [2024-11-01 20:31:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 20:31:55,520 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 [2024-11-01 20:31:55,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:55,521 INFO L225 Difference]: With dead ends: 156 [2024-11-01 20:31:55,521 INFO L226 Difference]: Without dead ends: 107 [2024-11-01 20:31:55,521 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 [2024-11-01 20:31:55,522 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-01 20:31:55,522 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] [2024-11-01 20:31:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-01 20:31:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-01 20:31:55,534 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) [2024-11-01 20:31:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2024-11-01 20:31:55,535 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 132 [2024-11-01 20:31:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:55,535 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2024-11-01 20:31:55,535 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) [2024-11-01 20:31:55,535 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2024-11-01 20:31:55,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-01 20:31:55,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:55,536 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] [2024-11-01 20:31:55,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-01 20:31:55,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:55,737 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:55,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:55,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1407600393, now seen corresponding path program 2 times [2024-11-01 20:31:55,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:55,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88467998] [2024-11-01 20:31:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:55,738 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:55,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:55,739 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:55,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-01 20:31:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:56,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-01 20:31:56,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-01 20:31:56,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-01 20:31:56,793 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:56,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88467998] [2024-11-01 20:31:56,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [88467998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:56,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:56,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-01 20:31:56,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166307517] [2024-11-01 20:31:56,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:56,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-01 20:31:56,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:56,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-01 20:31:56,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-01 20:31:56,795 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) [2024-11-01 20:31:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:56,948 INFO L93 Difference]: Finished difference Result 168 states and 193 transitions. [2024-11-01 20:31:56,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 20:31:56,950 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 [2024-11-01 20:31:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:56,951 INFO L225 Difference]: With dead ends: 168 [2024-11-01 20:31:56,951 INFO L226 Difference]: Without dead ends: 111 [2024-11-01 20:31:56,951 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 [2024-11-01 20:31:56,952 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:56,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 391 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 20:31:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-01 20:31:56,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-01 20:31:56,962 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) [2024-11-01 20:31:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2024-11-01 20:31:56,963 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 140 [2024-11-01 20:31:56,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:56,963 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2024-11-01 20:31:56,963 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) [2024-11-01 20:31:56,963 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2024-11-01 20:31:56,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-01 20:31:56,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:56,969 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] [2024-11-01 20:31:56,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:57,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:57,173 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:57,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:57,173 INFO L85 PathProgramCache]: Analyzing trace with hash -469367821, now seen corresponding path program 3 times [2024-11-01 20:31:57,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:57,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803224003] [2024-11-01 20:31:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:57,174 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:57,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:57,175 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:57,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-01 20:31:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:57,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:31:57,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-01 20:31:57,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-01 20:31:57,910 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:57,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803224003] [2024-11-01 20:31:57,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1803224003] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:31:57,910 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:31:57,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:31:57,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725728054] [2024-11-01 20:31:57,910 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:31:57,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:31:57,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:57,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:31:57,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:31:57,911 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) [2024-11-01 20:31:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:57,931 INFO L93 Difference]: Finished difference Result 175 states and 200 transitions. [2024-11-01 20:31:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:31:57,931 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 [2024-11-01 20:31:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:57,932 INFO L225 Difference]: With dead ends: 175 [2024-11-01 20:31:57,932 INFO L226 Difference]: Without dead ends: 114 [2024-11-01 20:31:57,933 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 [2024-11-01 20:31:57,934 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:31:57,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 133 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:31:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-01 20:31:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-01 20:31:57,940 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) [2024-11-01 20:31:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2024-11-01 20:31:57,940 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 144 [2024-11-01 20:31:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:57,940 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2024-11-01 20:31:57,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:31:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2024-11-01 20:31:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-01 20:31:57,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:57,941 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] [2024-11-01 20:31:57,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Forceful destruction successful, exit code 0 [2024-11-01 20:31:58,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:58,142 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:58,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:58,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1956806545, now seen corresponding path program 1 times [2024-11-01 20:31:58,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:58,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277690643] [2024-11-01 20:31:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:58,143 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:58,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:58,144 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:58,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-01 20:31:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:58,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:31:58,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-01 20:31:58,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:31:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-01 20:31:58,944 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:31:58,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277690643] [2024-11-01 20:31:58,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1277690643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:31:58,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:31:58,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:31:58,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432593645] [2024-11-01 20:31:58,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:31:58,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:31:58,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:31:58,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:31:58,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:31:58,945 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) [2024-11-01 20:31:59,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:31:59,005 INFO L93 Difference]: Finished difference Result 186 states and 213 transitions. [2024-11-01 20:31:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 20:31:59,006 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 [2024-11-01 20:31:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:31:59,006 INFO L225 Difference]: With dead ends: 186 [2024-11-01 20:31:59,007 INFO L226 Difference]: Without dead ends: 122 [2024-11-01 20:31:59,007 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 [2024-11-01 20:31:59,007 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 [2024-11-01 20:31:59,007 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] [2024-11-01 20:31:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-01 20:31:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-01 20:31:59,013 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) [2024-11-01 20:31:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 137 transitions. [2024-11-01 20:31:59,014 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 137 transitions. Word has length 148 [2024-11-01 20:31:59,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:31:59,014 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 137 transitions. [2024-11-01 20:31:59,014 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) [2024-11-01 20:31:59,014 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 137 transitions. [2024-11-01 20:31:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-01 20:31:59,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:31:59,015 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] [2024-11-01 20:31:59,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Ended with exit code 0 [2024-11-01 20:31:59,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:59,219 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:31:59,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:31:59,220 INFO L85 PathProgramCache]: Analyzing trace with hash -525623449, now seen corresponding path program 2 times [2024-11-01 20:31:59,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:31:59,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335297584] [2024-11-01 20:31:59,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:31:59,220 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:31:59,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:31:59,222 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:31:59,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-01 20:31:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:31:59,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-01 20:31:59,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:31:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-01 20:31:59,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-01 20:32:00,087 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:00,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335297584] [2024-11-01 20:32:00,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [335297584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:32:00,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:32:00,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-01 20:32:00,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291743464] [2024-11-01 20:32:00,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:32:00,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-01 20:32:00,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:00,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-01 20:32:00,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-01 20:32:00,090 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) [2024-11-01 20:32:00,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:00,209 INFO L93 Difference]: Finished difference Result 198 states and 223 transitions. [2024-11-01 20:32:00,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 20:32:00,209 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 [2024-11-01 20:32:00,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:00,210 INFO L225 Difference]: With dead ends: 198 [2024-11-01 20:32:00,210 INFO L226 Difference]: Without dead ends: 126 [2024-11-01 20:32:00,211 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 [2024-11-01 20:32:00,211 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 [2024-11-01 20:32:00,211 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] [2024-11-01 20:32:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-01 20:32:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-01 20:32:00,217 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) [2024-11-01 20:32:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2024-11-01 20:32:00,218 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 156 [2024-11-01 20:32:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:00,218 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2024-11-01 20:32:00,218 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) [2024-11-01 20:32:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2024-11-01 20:32:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-01 20:32:00,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:00,219 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] [2024-11-01 20:32:00,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:00,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:00,420 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:00,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:00,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1008746979, now seen corresponding path program 3 times [2024-11-01 20:32:00,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:00,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477624019] [2024-11-01 20:32:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:00,421 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:00,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:00,422 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:00,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Waiting until timeout for monitored process [2024-11-01 20:32:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:01,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 20:32:01,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-01 20:32:01,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-01 20:32:01,323 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:01,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477624019] [2024-11-01 20:32:01,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1477624019] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 20:32:01,323 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 20:32:01,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-01 20:32:01,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963552900] [2024-11-01 20:32:01,323 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 20:32:01,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 20:32:01,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:01,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 20:32:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-01 20:32:01,324 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) [2024-11-01 20:32:01,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:01,352 INFO L93 Difference]: Finished difference Result 205 states and 230 transitions. [2024-11-01 20:32:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 20:32:01,352 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 [2024-11-01 20:32:01,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:01,353 INFO L225 Difference]: With dead ends: 205 [2024-11-01 20:32:01,353 INFO L226 Difference]: Without dead ends: 129 [2024-11-01 20:32:01,353 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 [2024-11-01 20:32:01,354 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 20:32:01,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 133 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 20:32:01,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-01 20:32:01,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-01 20:32:01,365 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) [2024-11-01 20:32:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2024-11-01 20:32:01,366 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 160 [2024-11-01 20:32:01,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:01,366 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2024-11-01 20:32:01,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-01 20:32:01,366 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2024-11-01 20:32:01,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-01 20:32:01,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:01,367 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] [2024-11-01 20:32:01,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Ended with exit code 0 [2024-11-01 20:32:01,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:01,568 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:01,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash 134624735, now seen corresponding path program 1 times [2024-11-01 20:32:01,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:01,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438311333] [2024-11-01 20:32:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:01,569 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:01,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:01,570 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:01,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Waiting until timeout for monitored process [2024-11-01 20:32:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:02,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-01 20:32:02,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-01 20:32:02,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-01 20:32:02,501 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:02,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438311333] [2024-11-01 20:32:02,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1438311333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:32:02,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:32:02,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 20:32:02,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226990842] [2024-11-01 20:32:02,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:32:02,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 20:32:02,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:02,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 20:32:02,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-01 20:32:02,503 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) [2024-11-01 20:32:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:02,565 INFO L93 Difference]: Finished difference Result 216 states and 243 transitions. [2024-11-01 20:32:02,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 20:32:02,569 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 [2024-11-01 20:32:02,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:02,571 INFO L225 Difference]: With dead ends: 216 [2024-11-01 20:32:02,571 INFO L226 Difference]: Without dead ends: 137 [2024-11-01 20:32:02,571 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 [2024-11-01 20:32:02,571 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 [2024-11-01 20:32:02,572 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] [2024-11-01 20:32:02,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-01 20:32:02,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-01 20:32:02,579 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) [2024-11-01 20:32:02,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2024-11-01 20:32:02,581 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 164 [2024-11-01 20:32:02,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:02,581 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2024-11-01 20:32:02,581 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) [2024-11-01 20:32:02,581 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2024-11-01 20:32:02,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-01 20:32:02,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:02,584 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:02,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Ended with exit code 0 [2024-11-01 20:32:02,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:02,785 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:02,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:02,785 INFO L85 PathProgramCache]: Analyzing trace with hash -952499241, now seen corresponding path program 2 times [2024-11-01 20:32:02,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:02,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797525204] [2024-11-01 20:32:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:02,785 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:02,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:02,786 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:02,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Waiting until timeout for monitored process [2024-11-01 20:32:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:03,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-01 20:32:03,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 112 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-01 20:32:03,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 20:32:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-01 20:32:03,972 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:03,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797525204] [2024-11-01 20:32:03,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1797525204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 20:32:03,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 20:32:03,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-01 20:32:03,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598919392] [2024-11-01 20:32:03,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 20:32:03,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-01 20:32:03,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 20:32:03,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-01 20:32:03,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-01 20:32:03,974 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) [2024-11-01 20:32:04,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 20:32:04,095 INFO L93 Difference]: Finished difference Result 228 states and 253 transitions. [2024-11-01 20:32:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 20:32:04,095 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 [2024-11-01 20:32:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 20:32:04,096 INFO L225 Difference]: With dead ends: 228 [2024-11-01 20:32:04,096 INFO L226 Difference]: Without dead ends: 141 [2024-11-01 20:32:04,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-01 20:32:04,097 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 [2024-11-01 20:32:04,097 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] [2024-11-01 20:32:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-01 20:32:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-01 20:32:04,103 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) [2024-11-01 20:32:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 156 transitions. [2024-11-01 20:32:04,104 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 156 transitions. Word has length 172 [2024-11-01 20:32:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 20:32:04,104 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 156 transitions. [2024-11-01 20:32:04,105 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) [2024-11-01 20:32:04,105 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 156 transitions. [2024-11-01 20:32:04,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-01 20:32:04,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 20:32:04,105 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 20:32:04,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (21)] Ended with exit code 0 [2024-11-01 20:32:04,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:04,310 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 20:32:04,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 20:32:04,311 INFO L85 PathProgramCache]: Analyzing trace with hash 197516755, now seen corresponding path program 3 times [2024-11-01 20:32:04,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 20:32:04,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403750440] [2024-11-01 20:32:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 20:32:04,311 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 20:32:04,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:04,313 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 20:32:04,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (22)] Waiting until timeout for monitored process [2024-11-01 20:32:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 20:32:05,225 WARN L253 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 902 conjuncts are in the unsatisfiable core [2024-11-01 20:32:05,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 20:32:05,462 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 [2024-11-01 20:32:05,686 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 [2024-11-01 20:32:05,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:05,973 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 [2024-11-01 20:32:06,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:06,281 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 [2024-11-01 20:32:06,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:06,711 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 [2024-11-01 20:32:07,084 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:07,084 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 [2024-11-01 20:32:07,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:07,568 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 [2024-11-01 20:32:07,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:07,985 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 [2024-11-01 20:32:08,718 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 [2024-11-01 20:32:09,402 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 [2024-11-01 20:32:10,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:10,143 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 [2024-11-01 20:32:11,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:11,076 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 [2024-11-01 20:32:12,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:12,170 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 [2024-11-01 20:32:13,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:13,369 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 [2024-11-01 20:32:14,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:14,435 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 [2024-11-01 20:32:15,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 20:32:15,542 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 [2024-11-01 20:32:42,441 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-01 20:32:42,442 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 20:32:42,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403750440] [2024-11-01 20:32:42,442 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-01 20:32:42,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-01 20:32:42,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (22)] Forceful destruction successful, exit code 0 [2024-11-01 20:32:42,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 20:32:42,644 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 [2024-11-01 20:32:42,648 INFO L158 Benchmark]: Toolchain (without parser) took 59699.22ms. Allocated memory was 206.6MB in the beginning and 1.0GB in the end (delta: 805.3MB). Free memory was 160.7MB in the beginning and 811.5MB in the end (delta: -650.8MB). Peak memory consumption was 155.6MB. Max. memory is 8.0GB. [2024-11-01 20:32:42,648 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 206.6MB. Free memory is still 182.4MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-01 20:32:42,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 456.17ms. Allocated memory is still 206.6MB. Free memory was 160.7MB in the beginning and 123.5MB in the end (delta: 37.2MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2024-11-01 20:32:42,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.83ms. Allocated memory is still 206.6MB. Free memory was 123.5MB in the beginning and 116.1MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2024-11-01 20:32:42,648 INFO L158 Benchmark]: Boogie Preprocessor took 122.27ms. Allocated memory is still 206.6MB. Free memory was 116.1MB in the beginning and 106.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2024-11-01 20:32:42,648 INFO L158 Benchmark]: RCFGBuilder took 860.43ms. Allocated memory is still 206.6MB. Free memory was 106.7MB in the beginning and 114.8MB in the end (delta: -8.0MB). Peak memory consumption was 49.6MB. Max. memory is 8.0GB. [2024-11-01 20:32:42,649 INFO L158 Benchmark]: TraceAbstraction took 58174.58ms. Allocated memory was 206.6MB in the beginning and 1.0GB in the end (delta: 805.3MB). Free memory was 113.7MB in the beginning and 811.5MB in the end (delta: -697.8MB). Peak memory consumption was 107.0MB. Max. memory is 8.0GB. [2024-11-01 20:32:42,650 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 206.6MB. Free memory is still 182.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 456.17ms. Allocated memory is still 206.6MB. Free memory was 160.7MB in the beginning and 123.5MB in the end (delta: 37.2MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 80.83ms. Allocated memory is still 206.6MB. Free memory was 123.5MB in the beginning and 116.1MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 122.27ms. Allocated memory is still 206.6MB. Free memory was 116.1MB in the beginning and 106.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 860.43ms. Allocated memory is still 206.6MB. Free memory was 106.7MB in the beginning and 114.8MB in the end (delta: -8.0MB). Peak memory consumption was 49.6MB. Max. memory is 8.0GB. * TraceAbstraction took 58174.58ms. Allocated memory was 206.6MB in the beginning and 1.0GB in the end (delta: 805.3MB). Free memory was 113.7MB in the beginning and 811.5MB in the end (delta: -697.8MB). Peak memory consumption was 107.0MB. 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...