/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-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-39.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 12:31:46,111 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 12:31:46,175 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 12:31:46,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 12:31:46,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 12:31:46,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 12:31:46,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 12:31:46,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 12:31:46,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 12:31:46,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 12:31:46,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 12:31:46,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 12:31:46,208 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 12:31:46,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 12:31:46,208 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 12:31:46,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 12:31:46,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 12:31:46,208 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 12:31:46,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 12:31:46,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 12:31:46,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 12:31:46,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 12:31:46,210 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 12:31:46,210 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 12:31:46,210 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 12:31:46,211 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 12:31:46,211 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 12:31:46,211 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 12:31:46,211 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 12:31:46,211 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 12:31:46,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 12:31:46,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 12:31:46,212 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 12:31:46,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 12:31:46,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:31:46,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 12:31:46,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 12:31:46,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 12:31:46,212 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 12:31:46,213 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 12:31:46,213 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 12:31:46,213 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 12:31:46,214 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 12:31:46,214 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 12:31:46,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 12:31:46,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 12:31:46,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 12:31:46,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 12:31:46,456 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 12:31:46,457 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 12:31:46,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-39.i [2024-11-03 12:31:47,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 12:31:48,166 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 12:31:48,166 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-39.i [2024-11-03 12:31:48,183 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a34b36fd6/972f9a5b3de1457bb03f2bf0ad07a31c/FLAG941329a5c [2024-11-03 12:31:48,198 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a34b36fd6/972f9a5b3de1457bb03f2bf0ad07a31c [2024-11-03 12:31:48,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 12:31:48,202 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 12:31:48,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 12:31:48,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 12:31:48,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 12:31:48,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363a0240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48, skipping insertion in model container [2024-11-03 12:31:48,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,238 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 12:31:48,371 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-39.i[916,929] [2024-11-03 12:31:48,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:31:48,443 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 12:31:48,452 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-39.i[916,929] [2024-11-03 12:31:48,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:31:48,495 INFO L204 MainTranslator]: Completed translation [2024-11-03 12:31:48,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48 WrapperNode [2024-11-03 12:31:48,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 12:31:48,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 12:31:48,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 12:31:48,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 12:31:48,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,539 INFO L138 Inliner]: procedures = 27, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 196 [2024-11-03 12:31:48,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 12:31:48,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 12:31:48,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 12:31:48,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 12:31:48,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,556 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,574 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 12:31:48,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,589 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 12:31:48,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 12:31:48,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 12:31:48,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 12:31:48,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (1/1) ... [2024-11-03 12:31:48,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:31:48,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 12:31:48,619 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) [2024-11-03 12:31:48,621 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 [2024-11-03 12:31:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 12:31:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 12:31:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 12:31:48,641 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 12:31:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 12:31:48,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 12:31:48,715 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 12:31:48,717 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 12:31:53,491 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-03 12:31:53,491 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 12:31:53,508 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 12:31:53,508 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 12:31:53,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:31:53 BoogieIcfgContainer [2024-11-03 12:31:53,509 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 12:31:53,510 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 12:31:53,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 12:31:53,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 12:31:53,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:31:48" (1/3) ... [2024-11-03 12:31:53,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424a1287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:31:53, skipping insertion in model container [2024-11-03 12:31:53,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:31:48" (2/3) ... [2024-11-03 12:31:53,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424a1287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:31:53, skipping insertion in model container [2024-11-03 12:31:53,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:31:53" (3/3) ... [2024-11-03 12:31:53,519 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-39.i [2024-11-03 12:31:53,532 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 12:31:53,533 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 12:31:53,593 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 12:31:53,599 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;@780d810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 12:31:53,599 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 12:31:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 59 states have internal predecessors, (83), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-03 12:31:53,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-03 12:31:53,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:31:53,614 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:31:53,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:31:53,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:31:53,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1822079040, now seen corresponding path program 1 times [2024-11-03 12:31:53,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:31:53,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240579410] [2024-11-03 12:31:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:31:53,628 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:31:53,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:31:53,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:31:53,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 12:31:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:31:53,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 12:31:53,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:31:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-03 12:31:53,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:31:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-03 12:31:54,130 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:31:54,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240579410] [2024-11-03 12:31:54,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1240579410] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:31:54,130 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:31:54,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 12:31:54,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945580618] [2024-11-03 12:31:54,135 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:31:54,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 12:31:54,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:31:54,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 12:31:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:31:54,155 INFO L87 Difference]: Start difference. First operand has 85 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 59 states have internal predecessors, (83), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-03 12:31:54,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:31:54,180 INFO L93 Difference]: Finished difference Result 163 states and 280 transitions. [2024-11-03 12:31:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 12:31:54,182 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 163 [2024-11-03 12:31:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:31:54,188 INFO L225 Difference]: With dead ends: 163 [2024-11-03 12:31:54,188 INFO L226 Difference]: Without dead ends: 81 [2024-11-03 12:31:54,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:31:54,196 INFO L432 NwaCegarLoop]: 124 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, 124 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 [2024-11-03 12:31:54,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 12:31:54,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-03 12:31:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-03 12:31:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-03 12:31:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 124 transitions. [2024-11-03 12:31:54,232 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 124 transitions. Word has length 163 [2024-11-03 12:31:54,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:31:54,234 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 124 transitions. [2024-11-03 12:31:54,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (24), 1 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-03 12:31:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 124 transitions. [2024-11-03 12:31:54,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-03 12:31:54,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:31:54,238 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:31:54,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 12:31:54,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:31:54,439 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:31:54,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:31:54,440 INFO L85 PathProgramCache]: Analyzing trace with hash 968921588, now seen corresponding path program 1 times [2024-11-03 12:31:54,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:31:54,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80725323] [2024-11-03 12:31:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:31:54,441 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:31:54,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:31:54,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:31:54,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 12:31:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:31:54,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 12:31:54,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:31:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 563 proven. 39 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2024-11-03 12:31:55,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:31:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 30 proven. 39 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-11-03 12:31:55,705 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:31:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80725323] [2024-11-03 12:31:55,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [80725323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 12:31:55,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 12:31:55,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 12:31:55,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646587999] [2024-11-03 12:31:55,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 12:31:55,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 12:31:55,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:31:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 12:31:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-03 12:31:55,710 INFO L87 Difference]: Start difference. First operand 81 states and 124 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-03 12:32:00,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:32:04,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:32:06,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:32:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:32:06,385 INFO L93 Difference]: Finished difference Result 165 states and 250 transitions. [2024-11-03 12:32:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 12:32:06,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 163 [2024-11-03 12:32:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:32:06,424 INFO L225 Difference]: With dead ends: 165 [2024-11-03 12:32:06,424 INFO L226 Difference]: Without dead ends: 87 [2024-11-03 12:32:06,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-03 12:32:06,426 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 62 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2024-11-03 12:32:06,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 235 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2024-11-03 12:32:06,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-03 12:32:06,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2024-11-03 12:32:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 58 states have internal predecessors, (77), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-03 12:32:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 125 transitions. [2024-11-03 12:32:06,437 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 125 transitions. Word has length 163 [2024-11-03 12:32:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:32:06,437 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 125 transitions. [2024-11-03 12:32:06,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-03 12:32:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 125 transitions. [2024-11-03 12:32:06,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-03 12:32:06,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:32:06,439 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:32:06,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 12:32:06,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:32:06,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:32:06,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:32:06,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1934925815, now seen corresponding path program 1 times [2024-11-03 12:32:06,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:32:06,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780976602] [2024-11-03 12:32:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:32:06,643 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:32:06,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:32:06,646 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:32:06,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 12:32:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:32:06,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 12:32:06,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:32:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-03 12:32:06,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:32:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-03 12:32:07,591 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:32:07,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780976602] [2024-11-03 12:32:07,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [780976602] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:32:07,591 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:32:07,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2024-11-03 12:32:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328026241] [2024-11-03 12:32:07,592 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:32:07,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 12:32:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:32:07,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 12:32:07,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 12:32:07,593 INFO L87 Difference]: Start difference. First operand 85 states and 125 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-03 12:32:11,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:32:15,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:32:15,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:32:15,739 INFO L93 Difference]: Finished difference Result 310 states and 451 transitions. [2024-11-03 12:32:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 12:32:15,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 164 [2024-11-03 12:32:15,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:32:15,743 INFO L225 Difference]: With dead ends: 310 [2024-11-03 12:32:15,744 INFO L226 Difference]: Without dead ends: 228 [2024-11-03 12:32:15,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 12:32:15,745 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 371 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-03 12:32:15,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 433 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-03 12:32:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-03 12:32:15,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 101. [2024-11-03 12:32:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-03 12:32:15,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 146 transitions. [2024-11-03 12:32:15,762 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 146 transitions. Word has length 164 [2024-11-03 12:32:15,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:32:15,762 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 146 transitions. [2024-11-03 12:32:15,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-03 12:32:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 146 transitions. [2024-11-03 12:32:15,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-03 12:32:15,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:32:15,764 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:32:15,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 12:32:15,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:32:15,967 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:32:15,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:32:15,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2101876043, now seen corresponding path program 1 times [2024-11-03 12:32:15,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:32:15,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700221306] [2024-11-03 12:32:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:32:15,994 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:32:15,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:32:15,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:32:15,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 12:32:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:32:16,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 12:32:16,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:32:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 219 proven. 123 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2024-11-03 12:32:19,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:32:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 9 proven. 126 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-11-03 12:32:21,615 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:32:21,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700221306] [2024-11-03 12:32:21,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1700221306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 12:32:21,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 12:32:21,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2024-11-03 12:32:21,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41199387] [2024-11-03 12:32:21,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 12:32:21,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-03 12:32:21,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:32:21,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-03 12:32:21,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-03 12:32:21,621 INFO L87 Difference]: Start difference. First operand 101 states and 146 transitions. Second operand has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 5 states have call successors, (46), 3 states have call predecessors, (46), 7 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47) [2024-11-03 12:32:29,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:32:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:32:34,350 INFO L93 Difference]: Finished difference Result 420 states and 587 transitions. [2024-11-03 12:32:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-03 12:32:34,352 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 5 states have call successors, (46), 3 states have call predecessors, (46), 7 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47) Word has length 164 [2024-11-03 12:32:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:32:34,354 INFO L225 Difference]: With dead ends: 420 [2024-11-03 12:32:34,354 INFO L226 Difference]: Without dead ends: 322 [2024-11-03 12:32:34,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2024-11-03 12:32:34,359 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 434 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-03 12:32:34,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 659 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-11-03 12:32:34,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-03 12:32:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 213. [2024-11-03 12:32:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 154 states have (on average 1.3181818181818181) internal successors, (203), 154 states have internal predecessors, (203), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-03 12:32:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 299 transitions. [2024-11-03 12:32:34,405 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 299 transitions. Word has length 164 [2024-11-03 12:32:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:32:34,405 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 299 transitions. [2024-11-03 12:32:34,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 5 states have call successors, (46), 3 states have call predecessors, (46), 7 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47) [2024-11-03 12:32:34,406 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 299 transitions. [2024-11-03 12:32:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-03 12:32:34,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:32:34,407 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:32:34,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 12:32:34,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:32:34,608 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:32:34,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:32:34,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1883021325, now seen corresponding path program 1 times [2024-11-03 12:32:34,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:32:34,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315136695] [2024-11-03 12:32:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:32:34,635 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:32:34,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:32:34,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:32:34,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 12:32:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:32:34,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 12:32:34,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:32:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-03 12:32:36,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:32:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-03 12:32:37,975 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:32:37,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315136695] [2024-11-03 12:32:37,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1315136695] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:32:37,975 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:32:37,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [] total 7 [2024-11-03 12:32:37,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033667883] [2024-11-03 12:32:37,976 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:32:37,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 12:32:37,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:32:37,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 12:32:37,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-03 12:32:37,979 INFO L87 Difference]: Start difference. First operand 213 states and 299 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-03 12:32:42,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:32:42,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:32:42,677 INFO L93 Difference]: Finished difference Result 425 states and 596 transitions. [2024-11-03 12:32:42,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 12:32:42,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 164 [2024-11-03 12:32:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:32:42,716 INFO L225 Difference]: With dead ends: 425 [2024-11-03 12:32:42,716 INFO L226 Difference]: Without dead ends: 215 [2024-11-03 12:32:42,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-03 12:32:42,717 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 34 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-03 12:32:42,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 516 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-11-03 12:32:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-03 12:32:42,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 109. [2024-11-03 12:32:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-03 12:32:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 151 transitions. [2024-11-03 12:32:42,734 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 151 transitions. Word has length 164 [2024-11-03 12:32:42,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:32:42,735 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 151 transitions. [2024-11-03 12:32:42,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-03 12:32:42,735 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 151 transitions. [2024-11-03 12:32:42,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-03 12:32:42,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:32:42,736 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:32:42,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 12:32:42,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:32:42,937 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:32:42,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:32:42,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1875640598, now seen corresponding path program 1 times [2024-11-03 12:32:42,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:32:42,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265255504] [2024-11-03 12:32:42,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:32:42,938 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:32:42,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:32:42,939 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:32:42,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 12:32:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:32:43,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 12:32:43,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:32:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 533 proven. 24 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2024-11-03 12:32:43,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:32:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 45 proven. 24 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-11-03 12:32:44,468 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:32:44,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265255504] [2024-11-03 12:32:44,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1265255504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 12:32:44,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 12:32:44,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-03 12:32:44,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427677941] [2024-11-03 12:32:44,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 12:32:44,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 12:32:44,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:32:44,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 12:32:44,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-03 12:32:44,476 INFO L87 Difference]: Start difference. First operand 109 states and 151 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-03 12:32:49,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:32:52,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:32:55,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:32:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:32:55,333 INFO L93 Difference]: Finished difference Result 213 states and 290 transitions. [2024-11-03 12:32:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 12:32:55,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 165 [2024-11-03 12:32:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:32:55,376 INFO L225 Difference]: With dead ends: 213 [2024-11-03 12:32:55,376 INFO L226 Difference]: Without dead ends: 107 [2024-11-03 12:32:55,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-03 12:32:55,377 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 137 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-11-03 12:32:55,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 213 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 147 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2024-11-03 12:32:55,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-03 12:32:55,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2024-11-03 12:32:55,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 70 states have internal predecessors, (86), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-03 12:32:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 134 transitions. [2024-11-03 12:32:55,410 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 134 transitions. Word has length 165 [2024-11-03 12:32:55,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:32:55,414 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 134 transitions. [2024-11-03 12:32:55,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-03 12:32:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 134 transitions. [2024-11-03 12:32:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-03 12:32:55,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:32:55,415 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 12:32:55,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 12:32:55,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:32:55,616 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:32:55,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:32:55,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1966534190, now seen corresponding path program 1 times [2024-11-03 12:32:55,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:32:55,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366406744] [2024-11-03 12:32:55,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:32:55,617 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:32:55,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:32:55,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 12:32:55,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 12:32:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:32:55,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-03 12:32:55,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:33:02,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 641 proven. 144 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-11-03 12:33:02,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:33:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 57 proven. 141 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2024-11-03 12:33:16,777 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:33:16,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366406744] [2024-11-03 12:33:16,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [366406744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 12:33:16,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 12:33:16,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2024-11-03 12:33:16,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677015030] [2024-11-03 12:33:16,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 12:33:16,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-03 12:33:16,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:33:16,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-03 12:33:16,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2024-11-03 12:33:16,779 INFO L87 Difference]: Start difference. First operand 101 states and 134 transitions. Second operand has 34 states, 34 states have (on average 3.676470588235294) internal successors, (125), 34 states have internal predecessors, (125), 10 states have call successors, (48), 6 states have call predecessors, (48), 13 states have return successors, (48), 10 states have call predecessors, (48), 10 states have call successors, (48) [2024-11-03 12:33:30,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.68s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]