/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 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 01:11:07,288 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 01:11:07,338 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 01:11:07,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 01:11:07,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 01:11:07,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 01:11:07,366 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 01:11:07,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 01:11:07,367 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 01:11:07,369 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 01:11:07,369 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 01:11:07,369 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 01:11:07,370 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 01:11:07,370 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 01:11:07,370 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 01:11:07,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 01:11:07,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 01:11:07,371 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 01:11:07,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 01:11:07,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 01:11:07,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 01:11:07,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 01:11:07,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 01:11:07,373 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 01:11:07,373 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 01:11:07,373 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 01:11:07,373 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 01:11:07,373 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 01:11:07,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 01:11:07,373 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 01:11:07,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 01:11:07,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 01:11:07,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 01:11:07,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 01:11:07,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:11:07,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 01:11:07,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 01:11:07,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 01:11:07,375 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 01:11:07,375 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 01:11:07,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 01:11:07,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 01:11:07,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 01:11:07,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 01:11:07,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 01:11:07,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 01:11:07,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 01:11:07,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 01:11:07,558 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 01:11:07,559 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 01:11:07,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-10.i [2024-11-03 01:11:08,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 01:11:08,897 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 01:11:08,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-10.i [2024-11-03 01:11:08,905 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87ab8f70/598f9561b3d14783941b5bf4a803464a/FLAGc9b5d509c [2024-11-03 01:11:08,915 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87ab8f70/598f9561b3d14783941b5bf4a803464a [2024-11-03 01:11:08,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 01:11:08,918 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 01:11:08,919 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 01:11:08,919 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 01:11:08,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 01:11:08,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:11:08" (1/1) ... [2024-11-03 01:11:08,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1785a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:08, skipping insertion in model container [2024-11-03 01:11:08,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:11:08" (1/1) ... [2024-11-03 01:11:08,958 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 01:11:09,084 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_amount250_file-10.i[916,929] [2024-11-03 01:11:09,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:11:09,204 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 01:11:09,212 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_amount250_file-10.i[916,929] [2024-11-03 01:11:09,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:11:09,272 INFO L204 MainTranslator]: Completed translation [2024-11-03 01:11:09,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09 WrapperNode [2024-11-03 01:11:09,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 01:11:09,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 01:11:09,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 01:11:09,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 01:11:09,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (1/1) ... [2024-11-03 01:11:09,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (1/1) ... [2024-11-03 01:11:09,320 INFO L138 Inliner]: procedures = 27, calls = 78, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 402 [2024-11-03 01:11:09,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 01:11:09,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 01:11:09,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 01:11:09,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 01:11:09,328 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (1/1) ... [2024-11-03 01:11:09,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (1/1) ... [2024-11-03 01:11:09,333 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (1/1) ... [2024-11-03 01:11:09,353 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 01:11:09,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (1/1) ... [2024-11-03 01:11:09,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (1/1) ... [2024-11-03 01:11:09,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (1/1) ... [2024-11-03 01:11:09,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (1/1) ... [2024-11-03 01:11:09,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (1/1) ... [2024-11-03 01:11:09,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (1/1) ... [2024-11-03 01:11:09,382 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 01:11:09,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 01:11:09,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 01:11:09,383 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 01:11:09,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (1/1) ... [2024-11-03 01:11:09,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:11:09,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 01:11:09,419 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 01:11:09,444 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 01:11:09,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 01:11:09,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 01:11:09,463 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 01:11:09,463 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 01:11:09,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 01:11:09,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 01:11:09,571 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 01:11:09,573 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 01:11:16,862 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-03 01:11:16,862 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 01:11:16,877 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 01:11:16,878 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 01:11:16,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:11:16 BoogieIcfgContainer [2024-11-03 01:11:16,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 01:11:16,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 01:11:16,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 01:11:16,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 01:11:16,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:11:08" (1/3) ... [2024-11-03 01:11:16,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9cdf26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:11:16, skipping insertion in model container [2024-11-03 01:11:16,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:11:09" (2/3) ... [2024-11-03 01:11:16,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9cdf26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:11:16, skipping insertion in model container [2024-11-03 01:11:16,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:11:16" (3/3) ... [2024-11-03 01:11:16,887 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-10.i [2024-11-03 01:11:16,899 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 01:11:16,899 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 01:11:16,952 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 01:11:16,957 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;@5b326994, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 01:11:16,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 01:11:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 102 states have (on average 1.4313725490196079) internal successors, (146), 103 states have internal predecessors, (146), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-03 01:11:16,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-11-03 01:11:16,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:11:16,985 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:16,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:11:16,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:11:16,990 INFO L85 PathProgramCache]: Analyzing trace with hash -737838138, now seen corresponding path program 1 times [2024-11-03 01:11:16,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:11:16,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604516682] [2024-11-03 01:11:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:11:16,999 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:11:16,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:11:17,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:11:17,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 01:11:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:11:17,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 01:11:17,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:11:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2024-11-03 01:11:17,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:11:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2024-11-03 01:11:19,066 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:11:19,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604516682] [2024-11-03 01:11:19,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1604516682] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:11:19,067 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:11:19,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 01:11:19,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146808977] [2024-11-03 01:11:19,071 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:11:19,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 01:11:19,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:11:19,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 01:11:19,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:11:19,098 INFO L87 Difference]: Start difference. First operand has 170 states, 102 states have (on average 1.4313725490196079) internal successors, (146), 103 states have internal predecessors, (146), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (65), 1 states have call predecessors, (65), 2 states have return successors, (65), 2 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-03 01:11:19,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:11:19,128 INFO L93 Difference]: Finished difference Result 333 states and 611 transitions. [2024-11-03 01:11:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 01:11:19,130 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (65), 1 states have call predecessors, (65), 2 states have return successors, (65), 2 states have call predecessors, (65), 1 states have call successors, (65) Word has length 401 [2024-11-03 01:11:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:11:19,136 INFO L225 Difference]: With dead ends: 333 [2024-11-03 01:11:19,136 INFO L226 Difference]: Without dead ends: 166 [2024-11-03 01:11:19,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 800 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 01:11:19,141 INFO L432 NwaCegarLoop]: 268 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, 268 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 01:11:19,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 01:11:19,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-03 01:11:19,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-03 01:11:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 99 states have (on average 1.393939393939394) internal successors, (138), 99 states have internal predecessors, (138), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-03 01:11:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 268 transitions. [2024-11-03 01:11:19,190 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 268 transitions. Word has length 401 [2024-11-03 01:11:19,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:11:19,190 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 268 transitions. [2024-11-03 01:11:19,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (65), 1 states have call predecessors, (65), 2 states have return successors, (65), 2 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-03 01:11:19,191 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 268 transitions. [2024-11-03 01:11:19,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-11-03 01:11:19,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:11:19,203 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:19,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-03 01:11:19,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:11:19,408 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:11:19,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:11:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1494359300, now seen corresponding path program 1 times [2024-11-03 01:11:19,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:11:19,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807520942] [2024-11-03 01:11:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:11:19,409 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:11:19,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:11:19,411 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:11:19,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 01:11:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:11:19,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 01:11:19,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:11:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-03 01:11:20,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:11:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-03 01:11:21,639 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:11:21,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807520942] [2024-11-03 01:11:21,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1807520942] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:11:21,640 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:11:21,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 01:11:21,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64420702] [2024-11-03 01:11:21,640 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:11:21,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 01:11:21,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:11:21,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 01:11:21,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 01:11:21,643 INFO L87 Difference]: Start difference. First operand 166 states and 268 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-03 01:11:25,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:11:29,852 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 01:11:29,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:11:29,939 INFO L93 Difference]: Finished difference Result 491 states and 796 transitions. [2024-11-03 01:11:29,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 01:11:29,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 401 [2024-11-03 01:11:29,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:11:29,949 INFO L225 Difference]: With dead ends: 491 [2024-11-03 01:11:29,949 INFO L226 Difference]: Without dead ends: 328 [2024-11-03 01:11:29,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 01:11:29,951 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 244 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-03 01:11:29,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 740 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2024-11-03 01:11:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-03 01:11:30,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 326. [2024-11-03 01:11:30,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 193 states have (on average 1.38860103626943) internal successors, (268), 193 states have internal predecessors, (268), 130 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-03 01:11:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 528 transitions. [2024-11-03 01:11:30,011 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 528 transitions. Word has length 401 [2024-11-03 01:11:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:11:30,013 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 528 transitions. [2024-11-03 01:11:30,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-03 01:11:30,014 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 528 transitions. [2024-11-03 01:11:30,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-11-03 01:11:30,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:11:30,017 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:30,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-03 01:11:30,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:11:30,218 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:11:30,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:11:30,218 INFO L85 PathProgramCache]: Analyzing trace with hash 556624698, now seen corresponding path program 1 times [2024-11-03 01:11:30,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:11:30,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734819553] [2024-11-03 01:11:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:11:30,219 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:11:30,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:11:30,221 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:11:30,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 01:11:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:11:30,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 01:11:30,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:11:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-03 01:11:35,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:11:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-03 01:11:37,822 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:11:37,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734819553] [2024-11-03 01:11:37,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1734819553] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:11:37,822 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:11:37,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2024-11-03 01:11:37,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314150551] [2024-11-03 01:11:37,823 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:11:37,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 01:11:37,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:11:37,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 01:11:37,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 01:11:37,827 INFO L87 Difference]: Start difference. First operand 326 states and 528 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2024-11-03 01:11:42,000 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 01:11:44,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:11:45,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:11:45,598 INFO L93 Difference]: Finished difference Result 1293 states and 2099 transitions. [2024-11-03 01:11:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 01:11:45,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) Word has length 401 [2024-11-03 01:11:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:11:45,607 INFO L225 Difference]: With dead ends: 1293 [2024-11-03 01:11:45,607 INFO L226 Difference]: Without dead ends: 970 [2024-11-03 01:11:45,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 798 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 01:11:45,610 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 265 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-03 01:11:45,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 670 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2024-11-03 01:11:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2024-11-03 01:11:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 643. [2024-11-03 01:11:45,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 378 states have (on average 1.380952380952381) internal successors, (522), 378 states have internal predecessors, (522), 260 states have call successors, (260), 4 states have call predecessors, (260), 4 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) [2024-11-03 01:11:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1042 transitions. [2024-11-03 01:11:45,703 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1042 transitions. Word has length 401 [2024-11-03 01:11:45,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:11:45,706 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 1042 transitions. [2024-11-03 01:11:45,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2024-11-03 01:11:45,707 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1042 transitions. [2024-11-03 01:11:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-03 01:11:45,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:11:45,709 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:45,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-03 01:11:45,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:11:45,910 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:11:45,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:11:45,910 INFO L85 PathProgramCache]: Analyzing trace with hash 66414566, now seen corresponding path program 1 times [2024-11-03 01:11:45,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:11:45,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760274043] [2024-11-03 01:11:45,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:11:45,911 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:11:45,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:11:45,912 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:11:45,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 01:11:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:11:46,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 01:11:46,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:11:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-03 01:11:50,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:11:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-03 01:11:53,807 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:11:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760274043] [2024-11-03 01:11:53,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [760274043] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:11:53,807 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:11:53,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2024-11-03 01:11:53,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227811830] [2024-11-03 01:11:53,807 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:11:53,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 01:11:53,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:11:53,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 01:11:53,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 01:11:53,809 INFO L87 Difference]: Start difference. First operand 643 states and 1042 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2024-11-03 01:11:58,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:12:02,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:12:08,863 WARN L539 Checker$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 01:12:12,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:12:15,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:12:15,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:12:15,096 INFO L93 Difference]: Finished difference Result 1176 states and 1905 transitions. [2024-11-03 01:12:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 01:12:15,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) Word has length 402 [2024-11-03 01:12:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:12:15,158 INFO L225 Difference]: With dead ends: 1176 [2024-11-03 01:12:15,158 INFO L226 Difference]: Without dead ends: 536 [2024-11-03 01:12:15,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 800 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-03 01:12:15,160 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 457 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 458 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2024-11-03 01:12:15,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 502 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 279 Invalid, 4 Unknown, 0 Unchecked, 21.0s Time] [2024-11-03 01:12:15,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-11-03 01:12:15,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 191. [2024-11-03 01:12:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 124 states have (on average 1.4274193548387097) internal successors, (177), 124 states have internal predecessors, (177), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-03 01:12:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 307 transitions. [2024-11-03 01:12:15,185 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 307 transitions. Word has length 402 [2024-11-03 01:12:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:12:15,185 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 307 transitions. [2024-11-03 01:12:15,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2024-11-03 01:12:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 307 transitions. [2024-11-03 01:12:15,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-03 01:12:15,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:12:15,188 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:12:15,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 01:12:15,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:12:15,390 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:12:15,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:12:15,390 INFO L85 PathProgramCache]: Analyzing trace with hash 891442006, now seen corresponding path program 1 times [2024-11-03 01:12:15,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:12:15,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564653286] [2024-11-03 01:12:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:12:15,390 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:12:15,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:12:15,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:12:15,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 01:12:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:12:16,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 01:12:16,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:12:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-03 01:12:17,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:12:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2024-11-03 01:12:18,911 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:12:18,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564653286] [2024-11-03 01:12:18,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1564653286] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:12:18,912 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:12:18,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 01:12:18,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641615968] [2024-11-03 01:12:18,912 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:12:18,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 01:12:18,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:12:18,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 01:12:18,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 01:12:18,914 INFO L87 Difference]: Start difference. First operand 191 states and 307 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-03 01:12:23,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-03 01:12:23,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:12:23,950 INFO L93 Difference]: Finished difference Result 379 states and 611 transitions. [2024-11-03 01:12:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 01:12:24,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 402 [2024-11-03 01:12:24,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:12:24,008 INFO L225 Difference]: With dead ends: 379 [2024-11-03 01:12:24,008 INFO L226 Difference]: Without dead ends: 191 [2024-11-03 01:12:24,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 800 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 01:12:24,013 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 378 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 132 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-03 01:12:24,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 256 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2024-11-03 01:12:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-03 01:12:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2024-11-03 01:12:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 124 states have internal predecessors, (175), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-03 01:12:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 305 transitions. [2024-11-03 01:12:24,037 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 305 transitions. Word has length 402 [2024-11-03 01:12:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:12:24,038 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 305 transitions. [2024-11-03 01:12:24,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2024-11-03 01:12:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 305 transitions. [2024-11-03 01:12:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-03 01:12:24,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:12:24,040 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:12:24,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-03 01:12:24,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:12:24,240 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:12:24,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:12:24,241 INFO L85 PathProgramCache]: Analyzing trace with hash -797501736, now seen corresponding path program 1 times [2024-11-03 01:12:24,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:12:24,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034214085] [2024-11-03 01:12:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:12:24,241 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:12:24,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:12:24,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:12:24,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 01:12:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:12:25,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 01:12:25,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:12:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4068 proven. 114 refuted. 0 times theorem prover too weak. 4138 trivial. 0 not checked. [2024-11-03 01:12:28,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:12:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 78 proven. 114 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-03 01:12:31,198 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:12:31,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034214085] [2024-11-03 01:12:31,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1034214085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:12:31,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:12:31,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-03 01:12:31,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115197419] [2024-11-03 01:12:31,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:12:31,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 01:12:31,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:12:31,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 01:12:31,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-03 01:12:31,200 INFO L87 Difference]: Start difference. First operand 191 states and 305 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2024-11-03 01:12:37,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:12:41,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:12:41,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:12:41,425 INFO L93 Difference]: Finished difference Result 385 states and 612 transitions. [2024-11-03 01:12:41,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 01:12:41,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 402 [2024-11-03 01:12:41,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:12:41,484 INFO L225 Difference]: With dead ends: 385 [2024-11-03 01:12:41,484 INFO L226 Difference]: Without dead ends: 197 [2024-11-03 01:12:41,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 796 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-03 01:12:41,485 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 211 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-03 01:12:41,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 437 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 341 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2024-11-03 01:12:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-03 01:12:41,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2024-11-03 01:12:41,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 127 states have (on average 1.3858267716535433) internal successors, (176), 127 states have internal predecessors, (176), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-03 01:12:41,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 306 transitions. [2024-11-03 01:12:41,507 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 306 transitions. Word has length 402 [2024-11-03 01:12:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:12:41,507 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 306 transitions. [2024-11-03 01:12:41,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2024-11-03 01:12:41,508 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 306 transitions. [2024-11-03 01:12:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-03 01:12:41,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:12:41,509 INFO L215 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:12:41,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2024-11-03 01:12:41,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:12:41,711 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:12:41,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:12:41,711 INFO L85 PathProgramCache]: Analyzing trace with hash -869065007, now seen corresponding path program 1 times [2024-11-03 01:12:41,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:12:41,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234252299] [2024-11-03 01:12:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:12:41,712 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:12:41,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:12:41,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:12:41,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 01:12:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:12:43,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 01:12:43,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:12:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3168 proven. 144 refuted. 0 times theorem prover too weak. 5008 trivial. 0 not checked. [2024-11-03 01:12:46,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:12:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 48 proven. 144 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2024-11-03 01:12:49,986 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:12:49,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234252299] [2024-11-03 01:12:49,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1234252299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:12:49,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:12:49,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 01:12:49,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208326870] [2024-11-03 01:12:49,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:12:49,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 01:12:49,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:12:49,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 01:12:49,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-03 01:12:49,989 INFO L87 Difference]: Start difference. First operand 195 states and 306 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (114), 3 states have call predecessors, (114), 3 states have call successors, (114)