/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-59.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 12:34:43,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 12:34:43,302 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 12:34:43,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 12:34:43,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 12:34:43,343 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 12:34:43,344 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 12:34:43,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 12:34:43,345 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 12:34:43,346 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 12:34:43,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 12:34:43,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 12:34:43,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 12:34:43,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 12:34:43,349 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 12:34:43,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 12:34:43,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 12:34:43,350 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 12:34:43,350 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 12:34:43,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 12:34:43,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 12:34:43,354 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 12:34:43,354 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 12:34:43,354 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 12:34:43,355 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 12:34:43,355 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 12:34:43,355 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 12:34:43,355 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 12:34:43,355 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 12:34:43,356 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 12:34:43,356 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 12:34:43,356 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 12:34:43,356 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 12:34:43,356 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 12:34:43,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:34:43,357 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 12:34:43,357 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 12:34:43,357 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 12:34:43,357 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 12:34:43,357 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 12:34:43,358 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 12:34:43,358 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 12:34:43,358 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 12:34:43,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 12:34:43,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 12:34:43,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 12:34:43,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 12:34:43,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 12:34:43,653 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 12:34:43,653 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 12:34:43,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-59.i [2024-11-03 12:34:45,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 12:34:45,333 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 12:34:45,334 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-59.i [2024-11-03 12:34:45,354 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47225327d/ab4b09453f0b40488c4020bd71f3b0b7/FLAG5ced1e5a5 [2024-11-03 12:34:45,676 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47225327d/ab4b09453f0b40488c4020bd71f3b0b7 [2024-11-03 12:34:45,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 12:34:45,680 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 12:34:45,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 12:34:45,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 12:34:45,687 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 12:34:45,688 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:34:45" (1/1) ... [2024-11-03 12:34:45,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7e891e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:45, skipping insertion in model container [2024-11-03 12:34:45,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:34:45" (1/1) ... [2024-11-03 12:34:45,732 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 12:34:45,900 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-59.i[916,929] [2024-11-03 12:34:45,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:34:46,000 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 12:34:46,010 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-59.i[916,929] [2024-11-03 12:34:46,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 12:34:46,076 INFO L204 MainTranslator]: Completed translation [2024-11-03 12:34:46,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46 WrapperNode [2024-11-03 12:34:46,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 12:34:46,077 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 12:34:46,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 12:34:46,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 12:34:46,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (1/1) ... [2024-11-03 12:34:46,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (1/1) ... [2024-11-03 12:34:46,134 INFO L138 Inliner]: procedures = 27, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 165 [2024-11-03 12:34:46,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 12:34:46,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 12:34:46,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 12:34:46,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 12:34:46,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (1/1) ... [2024-11-03 12:34:46,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (1/1) ... [2024-11-03 12:34:46,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (1/1) ... [2024-11-03 12:34:46,167 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 12:34:46,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (1/1) ... [2024-11-03 12:34:46,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (1/1) ... [2024-11-03 12:34:46,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (1/1) ... [2024-11-03 12:34:46,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (1/1) ... [2024-11-03 12:34:46,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (1/1) ... [2024-11-03 12:34:46,187 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (1/1) ... [2024-11-03 12:34:46,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 12:34:46,193 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 12:34:46,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 12:34:46,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 12:34:46,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (1/1) ... [2024-11-03 12:34:46,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 12:34:46,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 12:34:46,241 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 12:34:46,248 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 12:34:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 12:34:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 12:34:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 12:34:46,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 12:34:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 12:34:46,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 12:34:46,409 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 12:34:46,412 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 12:34:59,096 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-03 12:34:59,097 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 12:34:59,117 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 12:34:59,117 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 12:34:59,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:34:59 BoogieIcfgContainer [2024-11-03 12:34:59,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 12:34:59,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 12:34:59,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 12:34:59,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 12:34:59,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:34:45" (1/3) ... [2024-11-03 12:34:59,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de7d731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:34:59, skipping insertion in model container [2024-11-03 12:34:59,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:34:46" (2/3) ... [2024-11-03 12:34:59,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de7d731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:34:59, skipping insertion in model container [2024-11-03 12:34:59,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:34:59" (3/3) ... [2024-11-03 12:34:59,129 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-59.i [2024-11-03 12:34:59,147 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 12:34:59,147 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 12:34:59,219 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 12:34:59,225 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;@2c42c477, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 12:34:59,225 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 12:34:59,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 52 states have internal predecessors, (76), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-03 12:34:59,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-03 12:34:59,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:34:59,242 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:59,242 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:34:59,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:34:59,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1757905294, now seen corresponding path program 1 times [2024-11-03 12:34:59,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:34:59,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065510637] [2024-11-03 12:34:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:34:59,255 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:34:59,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:34:59,257 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 12:34:59,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 12:34:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:34:59,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 12:34:59,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:34:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-03 12:34:59,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:34:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-03 12:34:59,908 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:34:59,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065510637] [2024-11-03 12:34:59,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2065510637] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:34:59,910 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:34:59,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 12:34:59,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682368715] [2024-11-03 12:34:59,912 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:34:59,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 12:34:59,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:34:59,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 12:34:59,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 12:34:59,940 INFO L87 Difference]: Start difference. First operand has 75 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 52 states have internal predecessors, (76), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-03 12:34:59,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:34:59,964 INFO L93 Difference]: Finished difference Result 143 states and 251 transitions. [2024-11-03 12:34:59,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 12:34:59,967 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 140 [2024-11-03 12:34:59,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:34:59,973 INFO L225 Difference]: With dead ends: 143 [2024-11-03 12:34:59,974 INFO L226 Difference]: Without dead ends: 71 [2024-11-03 12:34:59,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 278 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 12:34:59,980 INFO L432 NwaCegarLoop]: 111 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, 111 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 12:34:59,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 12:34:59,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-03 12:35:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-03 12:35:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-03 12:35:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 111 transitions. [2024-11-03 12:35:00,025 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 111 transitions. Word has length 140 [2024-11-03 12:35:00,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:35:00,025 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 111 transitions. [2024-11-03 12:35:00,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-03 12:35:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 111 transitions. [2024-11-03 12:35:00,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-03 12:35:00,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:35:00,030 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:00,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-03 12:35:00,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:35:00,231 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:35:00,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:35:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2091457580, now seen corresponding path program 1 times [2024-11-03 12:35:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:35:00,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811995021] [2024-11-03 12:35:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:35:00,233 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:35:00,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:35:00,234 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 12:35:00,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 12:35:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:35:00,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 12:35:00,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:35:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-03 12:35:00,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:35:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-03 12:35:01,011 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:35:01,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811995021] [2024-11-03 12:35:01,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1811995021] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:35:01,012 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:35:01,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2024-11-03 12:35:01,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590993166] [2024-11-03 12:35:01,012 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:35:01,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 12:35:01,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:35:01,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 12:35:01,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 12:35:01,016 INFO L87 Difference]: Start difference. First operand 71 states and 111 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-03 12:35:05,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.90s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:35:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:35:05,988 INFO L93 Difference]: Finished difference Result 204 states and 321 transitions. [2024-11-03 12:35:05,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 12:35:05,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 140 [2024-11-03 12:35:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:35:05,992 INFO L225 Difference]: With dead ends: 204 [2024-11-03 12:35:05,992 INFO L226 Difference]: Without dead ends: 136 [2024-11-03 12:35:05,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 12:35:05,994 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 231 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-03 12:35:05,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 197 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-03 12:35:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-03 12:35:06,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2024-11-03 12:35:06,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 89 states have (on average 1.3595505617977528) internal successors, (121), 89 states have internal predecessors, (121), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-03 12:35:06,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 205 transitions. [2024-11-03 12:35:06,026 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 205 transitions. Word has length 140 [2024-11-03 12:35:06,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:35:06,027 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 205 transitions. [2024-11-03 12:35:06,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-03 12:35:06,028 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 205 transitions. [2024-11-03 12:35:06,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-03 12:35:06,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:35:06,032 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:06,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 12:35:06,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:35:06,234 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:35:06,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:35:06,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1841343339, now seen corresponding path program 1 times [2024-11-03 12:35:06,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:35:06,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445314665] [2024-11-03 12:35:06,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:35:06,236 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:35:06,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:35:06,238 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 12:35:06,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 12:35:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:35:06,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 12:35:06,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:35:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-03 12:35:08,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:35:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-03 12:35:09,375 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:35:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445314665] [2024-11-03 12:35:09,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [445314665] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:35:09,375 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:35:09,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2024-11-03 12:35:09,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888248920] [2024-11-03 12:35:09,376 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:35:09,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 12:35:09,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:35:09,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 12:35:09,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 12:35:09,377 INFO L87 Difference]: Start difference. First operand 134 states and 205 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-03 12:35:14,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:35:15,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 12:35:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:35:16,069 INFO L93 Difference]: Finished difference Result 320 states and 491 transitions. [2024-11-03 12:35:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 12:35:16,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 141 [2024-11-03 12:35:16,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:35:16,074 INFO L225 Difference]: With dead ends: 320 [2024-11-03 12:35:16,074 INFO L226 Difference]: Without dead ends: 189 [2024-11-03 12:35:16,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-03 12:35:16,079 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 42 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-03 12:35:16,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 325 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2024-11-03 12:35:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-03 12:35:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 134. [2024-11-03 12:35:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 89 states have internal predecessors, (119), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-03 12:35:16,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 203 transitions. [2024-11-03 12:35:16,122 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 203 transitions. Word has length 141 [2024-11-03 12:35:16,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:35:16,122 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 203 transitions. [2024-11-03 12:35:16,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-03 12:35:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 203 transitions. [2024-11-03 12:35:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-03 12:35:16,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:35:16,129 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:16,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 12:35:16,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:35:16,330 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:35:16,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:35:16,331 INFO L85 PathProgramCache]: Analyzing trace with hash -979098577, now seen corresponding path program 1 times [2024-11-03 12:35:16,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:35:16,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312593815] [2024-11-03 12:35:16,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:35:16,331 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:35:16,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:35:16,333 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 12:35:16,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 12:35:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:35:16,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 12:35:16,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:35:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-03 12:35:16,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 12:35:17,860 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-03 12:35:17,861 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 12:35:17,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312593815] [2024-11-03 12:35:17,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1312593815] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 12:35:17,861 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 12:35:17,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2024-11-03 12:35:17,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899961785] [2024-11-03 12:35:17,861 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 12:35:17,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 12:35:17,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 12:35:17,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 12:35:17,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-03 12:35:17,863 INFO L87 Difference]: Start difference. First operand 134 states and 203 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-03 12:35:23,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:35:25,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 12:35:25,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 12:35:25,774 INFO L93 Difference]: Finished difference Result 214 states and 317 transitions. [2024-11-03 12:35:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 12:35:25,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2024-11-03 12:35:25,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 12:35:25,806 INFO L225 Difference]: With dead ends: 214 [2024-11-03 12:35:25,806 INFO L226 Difference]: Without dead ends: 83 [2024-11-03 12:35:25,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2024-11-03 12:35:25,808 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 168 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 124 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-03 12:35:25,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 161 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 142 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2024-11-03 12:35:25,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-03 12:35:25,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2024-11-03 12:35:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.24) internal successors, (62), 50 states have internal predecessors, (62), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-03 12:35:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 104 transitions. [2024-11-03 12:35:25,824 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 104 transitions. Word has length 142 [2024-11-03 12:35:25,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 12:35:25,825 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 104 transitions. [2024-11-03 12:35:25,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-03 12:35:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 104 transitions. [2024-11-03 12:35:25,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-03 12:35:25,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 12:35:25,827 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:25,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 12:35:26,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:35:26,028 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 12:35:26,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 12:35:26,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2017213119, now seen corresponding path program 1 times [2024-11-03 12:35:26,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 12:35:26,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833005267] [2024-11-03 12:35:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 12:35:26,029 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 12:35:26,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 12:35:26,030 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 12:35:26,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 12:35:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 12:35:26,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-03 12:35:26,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 12:35:42,371 WARN L286 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 12:35:47,454 WARN L286 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 12:36:00,187 WARN L286 SmtUtils]: Spent 6.41s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 12:36:05,401 WARN L286 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 12:36:16,294 WARN L286 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)