/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 19:55:54,222 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 19:55:54,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 19:55:54,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 19:55:54,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 19:55:54,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 19:55:54,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 19:55:54,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 19:55:54,349 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 19:55:54,353 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 19:55:54,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 19:55:54,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 19:55:54,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 19:55:54,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 19:55:54,355 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 19:55:54,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 19:55:54,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 19:55:54,356 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 19:55:54,358 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 19:55:54,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 19:55:54,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 19:55:54,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 19:55:54,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 19:55:54,359 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 19:55:54,359 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 19:55:54,359 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 19:55:54,359 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 19:55:54,360 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 19:55:54,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 19:55:54,360 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 19:55:54,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 19:55:54,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 19:55:54,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 19:55:54,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 19:55:54,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 19:55:54,362 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 19:55:54,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 19:55:54,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 19:55:54,363 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 19:55:54,363 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 19:55:54,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 19:55:54,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 19:55:54,363 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 19:55:54,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 19:55:54,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 19:55:54,364 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 19:55:54,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 19:55:54,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 19:55:54,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 19:55:54,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 19:55:54,617 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 19:55:54,617 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 19:55:54,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2023-12-21 19:55:55,821 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 19:55:56,006 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 19:55:56,006 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2023-12-21 19:55:56,012 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c89ab8361/3ebb63dd440447bb9eb71d55fba446fe/FLAG674e21a93 [2023-12-21 19:55:56,022 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c89ab8361/3ebb63dd440447bb9eb71d55fba446fe [2023-12-21 19:55:56,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 19:55:56,026 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 19:55:56,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 19:55:56,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 19:55:56,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 19:55:56,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ad6ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56, skipping insertion in model container [2023-12-21 19:55:56,037 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,055 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 19:55:56,178 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c[423,436] [2023-12-21 19:55:56,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 19:55:56,212 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 19:55:56,222 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c[423,436] [2023-12-21 19:55:56,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 19:55:56,242 INFO L206 MainTranslator]: Completed translation [2023-12-21 19:55:56,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56 WrapperNode [2023-12-21 19:55:56,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 19:55:56,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 19:55:56,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 19:55:56,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 19:55:56,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,274 INFO L138 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2023-12-21 19:55:56,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 19:55:56,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 19:55:56,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 19:55:56,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 19:55:56,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,307 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 1 writes are split as follows [0, 0, 1]. [2023-12-21 19:55:56,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,325 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 19:55:56,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 19:55:56,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 19:55:56,329 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 19:55:56,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (1/1) ... [2023-12-21 19:55:56,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 19:55:56,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 19:55:56,374 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) [2023-12-21 19:55:56,381 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 [2023-12-21 19:55:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 19:55:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 19:55:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 19:55:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 19:55:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 19:55:56,407 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 19:55:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 19:55:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 19:55:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 19:55:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 19:55:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 19:55:56,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 19:55:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 19:55:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 19:55:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 19:55:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 19:55:56,492 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 19:55:56,494 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 19:55:56,636 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 19:55:56,668 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 19:55:56,668 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 19:55:56,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 07:55:56 BoogieIcfgContainer [2023-12-21 19:55:56,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 19:55:56,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 19:55:56,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 19:55:56,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 19:55:56,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 07:55:56" (1/3) ... [2023-12-21 19:55:56,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e52f5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 07:55:56, skipping insertion in model container [2023-12-21 19:55:56,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:55:56" (2/3) ... [2023-12-21 19:55:56,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e52f5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 07:55:56, skipping insertion in model container [2023-12-21 19:55:56,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 07:55:56" (3/3) ... [2023-12-21 19:55:56,676 INFO L112 eAbstractionObserver]: Analyzing ICFG array_min_and_copy_shift_sum_add.c [2023-12-21 19:55:56,701 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 19:55:56,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 19:55:56,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 19:55:56,760 INFO L357 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, mHoare=true, 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;@352bae3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 19:55:56,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 19:55:56,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 19:55:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 19:55:56,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:55:56,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:55:56,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:55:56,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:55:56,775 INFO L85 PathProgramCache]: Analyzing trace with hash 736703334, now seen corresponding path program 1 times [2023-12-21 19:55:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:55:56,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202990983] [2023-12-21 19:55:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:55:56,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:55:56,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:55:56,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:55:56,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 19:55:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:55:56,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 19:55:56,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:55:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:55:56,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:55:56,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:55:56,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202990983] [2023-12-21 19:55:56,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202990983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:55:56,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:55:56,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 19:55:56,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93160443] [2023-12-21 19:55:56,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:55:56,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 19:55:56,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:55:56,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 19:55:56,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 19:55:56,907 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 19:55:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:55:56,961 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2023-12-21 19:55:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 19:55:56,963 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-12-21 19:55:56,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:55:56,968 INFO L225 Difference]: With dead ends: 48 [2023-12-21 19:55:56,969 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 19:55:56,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 19:55:56,974 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 19:55:56,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 19:55:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 19:55:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-21 19:55:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 19:55:57,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2023-12-21 19:55:57,030 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 21 [2023-12-21 19:55:57,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:55:57,030 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-12-21 19:55:57,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 19:55:57,031 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-12-21 19:55:57,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 19:55:57,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:55:57,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:55:57,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 19:55:57,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:55:57,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:55:57,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:55:57,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1171229586, now seen corresponding path program 1 times [2023-12-21 19:55:57,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:55:57,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390572326] [2023-12-21 19:55:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:55:57,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:55:57,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:55:57,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:55:57,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 19:55:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:55:57,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 19:55:57,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:55:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:55:57,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:55:57,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:55:57,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390572326] [2023-12-21 19:55:57,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390572326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:55:57,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:55:57,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 19:55:57,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061020345] [2023-12-21 19:55:57,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:55:57,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 19:55:57,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:55:57,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 19:55:57,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:55:57,372 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:55:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:55:57,439 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2023-12-21 19:55:57,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 19:55:57,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-12-21 19:55:57,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:55:57,440 INFO L225 Difference]: With dead ends: 28 [2023-12-21 19:55:57,441 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 19:55:57,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 19:55:57,444 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 19:55:57,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 59 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 19:55:57,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 19:55:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-21 19:55:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 19:55:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-12-21 19:55:57,458 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 21 [2023-12-21 19:55:57,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:55:57,459 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-12-21 19:55:57,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 19:55:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-12-21 19:55:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 19:55:57,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:55:57,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:55:57,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-21 19:55:57,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:55:57,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:55:57,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:55:57,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1922761409, now seen corresponding path program 1 times [2023-12-21 19:55:57,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:55:57,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177730724] [2023-12-21 19:55:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:55:57,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:55:57,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:55:57,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:55:57,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 19:55:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:55:57,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 19:55:57,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:55:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 19:55:57,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:55:57,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:55:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177730724] [2023-12-21 19:55:57,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177730724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:55:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:55:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 19:55:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702714281] [2023-12-21 19:55:57,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:55:57,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 19:55:57,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:55:57,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 19:55:57,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 19:55:57,875 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 19:55:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:55:58,058 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2023-12-21 19:55:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 19:55:58,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-12-21 19:55:58,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:55:58,060 INFO L225 Difference]: With dead ends: 43 [2023-12-21 19:55:58,061 INFO L226 Difference]: Without dead ends: 31 [2023-12-21 19:55:58,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-21 19:55:58,062 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 19:55:58,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 58 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 19:55:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-21 19:55:58,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2023-12-21 19:55:58,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 19:55:58,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-12-21 19:55:58,068 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 22 [2023-12-21 19:55:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:55:58,069 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-12-21 19:55:58,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 19:55:58,069 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-12-21 19:55:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 19:55:58,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:55:58,070 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:55:58,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 19:55:58,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:55:58,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:55:58,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:55:58,273 INFO L85 PathProgramCache]: Analyzing trace with hash 513249973, now seen corresponding path program 1 times [2023-12-21 19:55:58,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:55:58,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114214201] [2023-12-21 19:55:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:55:58,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:55:58,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:55:58,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:55:58,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 19:55:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:55:58,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 19:55:58,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:55:58,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2023-12-21 19:55:59,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:55:59,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2023-12-21 19:55:59,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-21 19:55:59,213 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:55:59,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:55:59,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-12-21 19:55:59,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2023-12-21 19:56:04,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:56:04,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 26 [2023-12-21 19:56:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 19:56:16,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:56:16,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114214201] [2023-12-21 19:56:16,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114214201] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:56:16,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:56:16,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2023-12-21 19:56:16,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240294495] [2023-12-21 19:56:16,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:56:16,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 19:56:16,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:56:16,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 19:56:16,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=578, Unknown=4, NotChecked=0, Total=702 [2023-12-21 19:56:16,400 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 27 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 19:56:23,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 19:56:24,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:56:24,336 INFO L93 Difference]: Finished difference Result 86 states and 114 transitions. [2023-12-21 19:56:24,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 19:56:24,337 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 33 [2023-12-21 19:56:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:56:24,339 INFO L225 Difference]: With dead ends: 86 [2023-12-21 19:56:24,339 INFO L226 Difference]: Without dead ends: 80 [2023-12-21 19:56:24,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=463, Invalid=1885, Unknown=4, NotChecked=0, Total=2352 [2023-12-21 19:56:24,341 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 130 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-21 19:56:24,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 226 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 440 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2023-12-21 19:56:24,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-21 19:56:24,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 64. [2023-12-21 19:56:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 52 states have internal predecessors, (69), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-21 19:56:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2023-12-21 19:56:24,357 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 33 [2023-12-21 19:56:24,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:56:24,358 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2023-12-21 19:56:24,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 19:56:24,358 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2023-12-21 19:56:24,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 19:56:24,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:56:24,359 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:56:24,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-21 19:56:24,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:56:24,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:56:24,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:56:24,563 INFO L85 PathProgramCache]: Analyzing trace with hash 771415411, now seen corresponding path program 1 times [2023-12-21 19:56:24,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:56:24,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323643885] [2023-12-21 19:56:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:56:24,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:56:24,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:56:24,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:56:24,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 19:56:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:56:24,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 19:56:24,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:56:25,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:56:25,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-12-21 19:56:25,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 19:56:25,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-21 19:56:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 19:56:25,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:56:25,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-12-21 19:56:25,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2023-12-21 19:56:51,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:56:51,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 29 [2023-12-21 19:56:51,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:56:51,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323643885] [2023-12-21 19:56:51,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323643885] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 19:56:51,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [346579162] [2023-12-21 19:56:51,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:56:51,580 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 19:56:51,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 19:56:51,642 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) [2023-12-21 19:56:51,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-21 19:56:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:56:51,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 19:56:51,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:56:52,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:56:52,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-12-21 19:56:52,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 19:56:52,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-12-21 19:56:52,227 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 19:56:52,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:56:52,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-12-21 19:56:52,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2023-12-21 19:56:59,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:56:59,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 29 [2023-12-21 19:57:00,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [346579162] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 19:57:00,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:57:00,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2023-12-21 19:57:00,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083997476] [2023-12-21 19:57:00,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:57:00,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 19:57:00,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:57:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 19:57:00,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1006, Unknown=7, NotChecked=0, Total=1190 [2023-12-21 19:57:00,151 INFO L87 Difference]: Start difference. First operand 64 states and 89 transitions. Second operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 17 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 19:57:02,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:57:02,098 INFO L93 Difference]: Finished difference Result 111 states and 151 transitions. [2023-12-21 19:57:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 19:57:02,099 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 17 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2023-12-21 19:57:02,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:57:02,100 INFO L225 Difference]: With dead ends: 111 [2023-12-21 19:57:02,100 INFO L226 Difference]: Without dead ends: 107 [2023-12-21 19:57:02,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=383, Invalid=1866, Unknown=7, NotChecked=0, Total=2256 [2023-12-21 19:57:02,102 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 106 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 19:57:02,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 162 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 19:57:02,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-21 19:57:02,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 64. [2023-12-21 19:57:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 52 states have internal predecessors, (69), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-21 19:57:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2023-12-21 19:57:02,118 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 33 [2023-12-21 19:57:02,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:57:02,119 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2023-12-21 19:57:02,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 17 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 19:57:02,119 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2023-12-21 19:57:02,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 19:57:02,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:57:02,120 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:57:02,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-21 19:57:02,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-21 19:57:02,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:57:02,523 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:57:02,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:57:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash -917528331, now seen corresponding path program 1 times [2023-12-21 19:57:02,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:57:02,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408123219] [2023-12-21 19:57:02,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:57:02,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:57:02,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:57:02,525 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:57:02,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 19:57:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:57:02,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 19:57:02,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:57:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 19:57:02,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:57:02,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:57:02,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408123219] [2023-12-21 19:57:02,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408123219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:57:02,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:57:02,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 19:57:02,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115839404] [2023-12-21 19:57:02,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:57:02,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 19:57:02,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:57:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 19:57:02,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 19:57:02,600 INFO L87 Difference]: Start difference. First operand 64 states and 89 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 19:57:02,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:57:02,686 INFO L93 Difference]: Finished difference Result 97 states and 133 transitions. [2023-12-21 19:57:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 19:57:02,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-12-21 19:57:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:57:02,691 INFO L225 Difference]: With dead ends: 97 [2023-12-21 19:57:02,691 INFO L226 Difference]: Without dead ends: 45 [2023-12-21 19:57:02,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 19:57:02,693 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 19:57:02,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 19:57:02,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-21 19:57:02,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-21 19:57:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 19:57:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2023-12-21 19:57:02,702 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 33 [2023-12-21 19:57:02,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:57:02,703 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2023-12-21 19:57:02,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 19:57:02,703 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2023-12-21 19:57:02,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 19:57:02,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:57:02,704 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:57:02,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 19:57:02,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:57:02,907 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:57:02,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:57:02,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1243502632, now seen corresponding path program 2 times [2023-12-21 19:57:02,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:57:02,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895680472] [2023-12-21 19:57:02,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 19:57:02,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:57:02,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:57:02,909 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:57:02,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 19:57:02,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 19:57:02,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:57:02,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 19:57:02,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:57:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 19:57:03,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:57:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 19:57:03,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:57:03,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895680472] [2023-12-21 19:57:03,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895680472] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:57:03,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:57:03,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-12-21 19:57:03,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646932613] [2023-12-21 19:57:03,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:57:03,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 19:57:03,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:57:03,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 19:57:03,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-12-21 19:57:03,362 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-21 19:57:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:57:03,786 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2023-12-21 19:57:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 19:57:03,786 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2023-12-21 19:57:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:57:03,788 INFO L225 Difference]: With dead ends: 79 [2023-12-21 19:57:03,788 INFO L226 Difference]: Without dead ends: 64 [2023-12-21 19:57:03,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-12-21 19:57:03,789 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:57:03,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 112 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 19:57:03,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-21 19:57:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2023-12-21 19:57:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 states have internal predecessors, (53), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 19:57:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2023-12-21 19:57:03,800 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 34 [2023-12-21 19:57:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:57:03,800 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2023-12-21 19:57:03,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-21 19:57:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2023-12-21 19:57:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 19:57:03,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:57:03,802 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:57:03,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-21 19:57:04,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:57:04,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:57:04,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:57:04,006 INFO L85 PathProgramCache]: Analyzing trace with hash 12402317, now seen corresponding path program 3 times [2023-12-21 19:57:04,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:57:04,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654400533] [2023-12-21 19:57:04,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 19:57:04,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:57:04,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:57:04,007 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:57:04,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 19:57:04,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 19:57:04,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:57:04,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 19:57:04,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:57:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 19:57:04,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:57:04,284 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 19:57:04,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:57:04,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654400533] [2023-12-21 19:57:04,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654400533] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:57:04,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:57:04,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-21 19:57:04,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792097105] [2023-12-21 19:57:04,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:57:04,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 19:57:04,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:57:04,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 19:57:04,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-21 19:57:04,286 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-21 19:57:04,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:57:04,645 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2023-12-21 19:57:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 19:57:04,646 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2023-12-21 19:57:04,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:57:04,646 INFO L225 Difference]: With dead ends: 77 [2023-12-21 19:57:04,647 INFO L226 Difference]: Without dead ends: 70 [2023-12-21 19:57:04,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-12-21 19:57:04,647 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 73 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:57:04,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 106 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 19:57:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-21 19:57:04,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 38. [2023-12-21 19:57:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 19:57:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-12-21 19:57:04,659 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 43 [2023-12-21 19:57:04,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:57:04,659 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-12-21 19:57:04,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-21 19:57:04,660 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-12-21 19:57:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 19:57:04,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:57:04,661 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:57:04,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 19:57:04,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:57:04,864 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:57:04,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:57:04,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1725584258, now seen corresponding path program 4 times [2023-12-21 19:57:04,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:57:04,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190802131] [2023-12-21 19:57:04,865 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 19:57:04,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:57:04,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:57:04,866 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:57:04,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 19:57:04,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 19:57:04,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:57:04,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 19:57:04,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:57:06,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-21 19:57:06,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2023-12-21 19:57:06,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:57:06,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 74 [2023-12-21 19:57:07,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:57:07,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 29 [2023-12-21 19:57:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:57:07,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:57:16,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2023-12-21 19:57:16,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:57:16,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1148 treesize of output 1100 [2023-12-21 19:57:41,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:57:41,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 70 [2023-12-21 19:57:46,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:57:46,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190802131] [2023-12-21 19:57:46,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190802131] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 19:57:46,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1758456621] [2023-12-21 19:57:46,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 19:57:46,830 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 19:57:46,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 19:57:46,831 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 19:57:46,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-21 19:57:46,967 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 19:57:46,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:57:46,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 19:57:46,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:57:47,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-21 19:57:47,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2023-12-21 19:57:47,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:57:47,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 74 [2023-12-21 19:57:48,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:57:48,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 29 [2023-12-21 19:57:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:57:48,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:57:48,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2023-12-21 19:57:48,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:57:48,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 571 treesize of output 547 [2023-12-21 19:59:09,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:59:09,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 70 [2023-12-21 19:59:15,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1758456621] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 19:59:15,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:59:15,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2023-12-21 19:59:15,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558055715] [2023-12-21 19:59:15,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:59:15,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 19:59:15,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:59:15,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 19:59:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2435, Unknown=23, NotChecked=0, Total=2756 [2023-12-21 19:59:15,550 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 27 states, 25 states have (on average 1.36) internal successors, (34), 24 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 19:59:19,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:59:19,750 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2023-12-21 19:59:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 19:59:19,751 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.36) internal successors, (34), 24 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 45 [2023-12-21 19:59:19,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:59:19,752 INFO L225 Difference]: With dead ends: 85 [2023-12-21 19:59:19,752 INFO L226 Difference]: Without dead ends: 81 [2023-12-21 19:59:19,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 100 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 126.7s TimeCoverageRelationStatistics Valid=463, Invalid=3546, Unknown=23, NotChecked=0, Total=4032 [2023-12-21 19:59:19,754 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 90 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 19:59:19,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 318 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 19:59:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-21 19:59:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2023-12-21 19:59:19,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-21 19:59:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2023-12-21 19:59:19,772 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 45 [2023-12-21 19:59:19,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:59:19,772 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2023-12-21 19:59:19,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.36) internal successors, (34), 24 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 19:59:19,772 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2023-12-21 19:59:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 19:59:19,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:59:19,773 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:59:19,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 19:59:19,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-21 19:59:20,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-21 19:59:20,177 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:59:20,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:59:20,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1558265788, now seen corresponding path program 1 times [2023-12-21 19:59:20,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:59:20,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367416432] [2023-12-21 19:59:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:59:20,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:59:20,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:59:20,178 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:59:20,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 19:59:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:59:20,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 19:59:20,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:59:21,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-21 19:59:21,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2023-12-21 19:59:21,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:59:21,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 75 [2023-12-21 19:59:22,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:59:22,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 30 [2023-12-21 19:59:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 19:59:22,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:59:31,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2023-12-21 19:59:31,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:59:31,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 571 treesize of output 547 [2023-12-21 20:00:21,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:00:21,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 69 [2023-12-21 20:00:30,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 20:00:30,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367416432] [2023-12-21 20:00:30,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367416432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 20:00:30,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1140762942] [2023-12-21 20:00:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 20:00:30,565 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 20:00:30,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 20:00:30,567 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 20:00:30,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-21 20:00:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 20:00:30,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-21 20:00:30,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 20:00:31,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-21 20:00:31,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2023-12-21 20:00:31,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:00:31,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 75 [2023-12-21 20:00:31,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:00:31,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 30 [2023-12-21 20:00:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 20:00:31,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 20:00:31,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2023-12-21 20:00:31,823 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:00:31,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1188 treesize of output 1140 [2023-12-21 20:02:05,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:02:05,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 69 [2023-12-21 20:02:13,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1140762942] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 20:02:13,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 20:02:13,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2023-12-21 20:02:13,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328342286] [2023-12-21 20:02:13,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 20:02:13,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 20:02:13,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 20:02:13,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 20:02:13,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2520, Unknown=35, NotChecked=0, Total=2862 [2023-12-21 20:02:13,356 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 27 states, 25 states have (on average 1.36) internal successors, (34), 24 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 20:02:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 20:02:17,905 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2023-12-21 20:02:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 20:02:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.36) internal successors, (34), 24 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 45 [2023-12-21 20:02:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 20:02:17,911 INFO L225 Difference]: With dead ends: 98 [2023-12-21 20:02:17,911 INFO L226 Difference]: Without dead ends: 94 [2023-12-21 20:02:17,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 99 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1624 ImplicationChecksByTransitivity, 169.9s TimeCoverageRelationStatistics Valid=534, Invalid=3853, Unknown=35, NotChecked=0, Total=4422 [2023-12-21 20:02:17,912 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 95 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 20:02:17,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 259 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 20:02:17,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-21 20:02:17,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 66. [2023-12-21 20:02:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-21 20:02:17,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2023-12-21 20:02:17,929 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 45 [2023-12-21 20:02:17,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 20:02:17,929 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2023-12-21 20:02:17,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.36) internal successors, (34), 24 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 20:02:17,929 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2023-12-21 20:02:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 20:02:17,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 20:02:17,930 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 20:02:17,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-21 20:02:18,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 20:02:18,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 20:02:18,333 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 20:02:18,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 20:02:18,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1859597764, now seen corresponding path program 2 times [2023-12-21 20:02:18,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 20:02:18,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110013683] [2023-12-21 20:02:18,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 20:02:18,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 20:02:18,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 20:02:18,335 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 20:02:18,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 20:02:18,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 20:02:18,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 20:02:18,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 20:02:18,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 20:02:20,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-21 20:02:20,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2023-12-21 20:02:20,293 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:02:20,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 74 [2023-12-21 20:02:20,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:02:20,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 29 [2023-12-21 20:02:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 20:02:20,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 20:02:29,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2023-12-21 20:02:29,759 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:02:29,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 595 treesize of output 571 [2023-12-21 20:03:01,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:03:01,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 73 [2023-12-21 20:03:04,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 20:03:04,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110013683] [2023-12-21 20:03:04,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110013683] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 20:03:04,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1069320072] [2023-12-21 20:03:04,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 20:03:04,958 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 20:03:04,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 20:03:04,959 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 20:03:04,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-21 20:03:05,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 20:03:05,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 20:03:05,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 20:03:05,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 20:03:05,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-21 20:03:05,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2023-12-21 20:03:05,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:03:05,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 74 [2023-12-21 20:03:06,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:03:06,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 29 [2023-12-21 20:03:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 20:03:06,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 20:03:06,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2023-12-21 20:03:06,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:03:06,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1148 treesize of output 1100 [2023-12-21 20:04:28,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:04:28,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 73 [2023-12-21 20:04:45,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1069320072] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 20:04:45,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 20:04:45,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2023-12-21 20:04:45,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690041425] [2023-12-21 20:04:45,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 20:04:45,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 20:04:45,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 20:04:45,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 20:04:45,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=2917, Unknown=23, NotChecked=0, Total=3306 [2023-12-21 20:04:45,589 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 31 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 26 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 20:04:50,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 20:04:50,386 INFO L93 Difference]: Finished difference Result 129 states and 156 transitions. [2023-12-21 20:04:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 20:04:50,387 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 26 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 45 [2023-12-21 20:04:50,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 20:04:50,389 INFO L225 Difference]: With dead ends: 129 [2023-12-21 20:04:50,389 INFO L226 Difference]: Without dead ends: 125 [2023-12-21 20:04:50,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 94 SyntacticMatches, 6 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 145.3s TimeCoverageRelationStatistics Valid=583, Invalid=4364, Unknown=23, NotChecked=0, Total=4970 [2023-12-21 20:04:50,391 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 146 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 20:04:50,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 167 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 20:04:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-21 20:04:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 80. [2023-12-21 20:04:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-21 20:04:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2023-12-21 20:04:50,417 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 45 [2023-12-21 20:04:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 20:04:50,417 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2023-12-21 20:04:50,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 26 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 20:04:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2023-12-21 20:04:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 20:04:50,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 20:04:50,418 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 20:04:50,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-12-21 20:04:50,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 20:04:50,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 20:04:50,823 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 20:04:50,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 20:04:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1424252282, now seen corresponding path program 2 times [2023-12-21 20:04:50,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 20:04:50,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368208335] [2023-12-21 20:04:50,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 20:04:50,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 20:04:50,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 20:04:50,825 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 20:04:50,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-21 20:04:50,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 20:04:50,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 20:04:50,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 20:04:50,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 20:04:52,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-21 20:04:53,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:04:53,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 83 [2023-12-21 20:04:53,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 47 [2023-12-21 20:04:53,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:04:53,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 41 [2023-12-21 20:04:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 20:04:54,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 20:05:03,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2023-12-21 20:05:03,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:05:03,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 595 treesize of output 571 [2023-12-21 20:06:29,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:06:29,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 76 [2023-12-21 20:06:33,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 20:06:33,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368208335] [2023-12-21 20:06:33,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368208335] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 20:06:33,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [114174346] [2023-12-21 20:06:33,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 20:06:33,971 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 20:06:33,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 20:06:33,973 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 20:06:33,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-21 20:06:34,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 20:06:34,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 20:06:34,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 20:06:34,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 20:06:34,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-21 20:06:34,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:06:34,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 83 [2023-12-21 20:06:34,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 47 [2023-12-21 20:06:35,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:06:35,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 41 [2023-12-21 20:06:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 20:06:36,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 20:06:36,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2023-12-21 20:06:36,451 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:06:36,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1152 treesize of output 1104 [2023-12-21 20:08:24,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:08:24,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 76 [2023-12-21 20:08:30,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [114174346] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 20:08:30,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 20:08:30,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2023-12-21 20:08:30,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904917304] [2023-12-21 20:08:30,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 20:08:30,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 20:08:30,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 20:08:30,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 20:08:30,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=2993, Unknown=43, NotChecked=0, Total=3422 [2023-12-21 20:08:30,867 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 31 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 26 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 20:08:38,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 20:08:38,610 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2023-12-21 20:08:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 20:08:38,610 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 26 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 45 [2023-12-21 20:08:38,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 20:08:38,611 INFO L225 Difference]: With dead ends: 108 [2023-12-21 20:08:38,611 INFO L226 Difference]: Without dead ends: 104 [2023-12-21 20:08:38,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 94 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1793 ImplicationChecksByTransitivity, 217.6s TimeCoverageRelationStatistics Valid=615, Invalid=4454, Unknown=43, NotChecked=0, Total=5112 [2023-12-21 20:08:38,613 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 57 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 20:08:38,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 253 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 20:08:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-21 20:08:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 58. [2023-12-21 20:08:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 48 states have (on average 1.1875) internal successors, (57), 48 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-21 20:08:38,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2023-12-21 20:08:38,628 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 45 [2023-12-21 20:08:38,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 20:08:38,628 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2023-12-21 20:08:38,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 26 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 20:08:38,628 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2023-12-21 20:08:38,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 20:08:38,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 20:08:38,629 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 20:08:38,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-21 20:08:38,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-21 20:08:39,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-21 20:08:39,031 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 20:08:39,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 20:08:39,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1927887057, now seen corresponding path program 5 times [2023-12-21 20:08:39,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 20:08:39,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733839813] [2023-12-21 20:08:39,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 20:08:39,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 20:08:39,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 20:08:39,032 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 20:08:39,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-21 20:08:39,098 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 20:08:39,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 20:08:39,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 20:08:39,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 20:08:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 20:08:39,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 20:08:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 20:08:39,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 20:08:39,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733839813] [2023-12-21 20:08:39,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733839813] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 20:08:39,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 20:08:39,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-12-21 20:08:39,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390482907] [2023-12-21 20:08:39,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 20:08:39,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 20:08:39,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 20:08:39,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 20:08:39,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-12-21 20:08:39,750 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-21 20:08:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 20:08:40,337 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2023-12-21 20:08:40,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 20:08:40,337 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 46 [2023-12-21 20:08:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 20:08:40,338 INFO L225 Difference]: With dead ends: 102 [2023-12-21 20:08:40,338 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 20:08:40,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2023-12-21 20:08:40,339 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 90 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 20:08:40,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 143 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 20:08:40,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 20:08:40,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 66. [2023-12-21 20:08:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 states have internal predecessors, (66), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-21 20:08:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2023-12-21 20:08:40,360 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 46 [2023-12-21 20:08:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 20:08:40,360 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2023-12-21 20:08:40,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 20 states have internal predecessors, (50), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-21 20:08:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2023-12-21 20:08:40,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 20:08:40,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 20:08:40,361 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 20:08:40,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-21 20:08:40,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 20:08:40,563 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 20:08:40,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 20:08:40,564 INFO L85 PathProgramCache]: Analyzing trace with hash 800085078, now seen corresponding path program 6 times [2023-12-21 20:08:40,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 20:08:40,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334218950] [2023-12-21 20:08:40,564 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 20:08:40,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 20:08:40,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 20:08:40,565 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 20:08:40,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-21 20:08:40,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 20:08:40,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 20:08:40,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-21 20:08:40,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 20:08:45,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-21 20:08:45,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 20:08:46,001 INFO L349 Elim1Store]: treesize reduction 84, result has 67.3 percent of original size [2023-12-21 20:08:46,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 160 treesize of output 234 [2023-12-21 20:08:46,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 59 [2023-12-21 20:08:48,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:08:48,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2023-12-21 20:08:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 46 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 20:08:48,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 20:08:50,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2023-12-21 20:08:50,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:08:50,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1152 treesize of output 1104 [2023-12-21 20:09:09,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 20:09:09,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334218950] [2023-12-21 20:09:09,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334218950] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 20:09:09,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1772144774] [2023-12-21 20:09:09,059 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 20:09:09,059 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 20:09:09,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 20:09:09,060 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 20:09:09,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-21 20:09:09,202 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-21 20:09:09,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 20:09:09,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 20:09:09,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 20:09:19,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-21 20:09:20,335 INFO L349 Elim1Store]: treesize reduction 56, result has 53.7 percent of original size [2023-12-21 20:09:20,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 125 treesize of output 113 [2023-12-21 20:09:20,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 72 [2023-12-21 20:09:23,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:09:23,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 29 [2023-12-21 20:09:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 44 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 20:09:24,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 20:09:24,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2023-12-21 20:09:24,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 20:09:24,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 571 treesize of output 547 [2023-12-21 20:10:01,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1772144774] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 20:10:01,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 20:10:01,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 30] total 56 [2023-12-21 20:10:01,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162175531] [2023-12-21 20:10:01,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 20:10:01,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-21 20:10:01,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 20:10:01,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-21 20:10:01,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=758, Invalid=5876, Unknown=8, NotChecked=0, Total=6642 [2023-12-21 20:10:01,571 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 56 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 51 states have internal predecessors, (71), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-21 20:10:06,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 20:10:19,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 20:10:23,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-21 20:10:26,528 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 20:10:26,531 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 20:10:26,535 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 20:10:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-21 20:10:26,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 73 SyntacticMatches, 7 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4653 ImplicationChecksByTransitivity, 80.4s TimeCoverageRelationStatistics Valid=1475, Invalid=11173, Unknown=8, NotChecked=0, Total=12656 [2023-12-21 20:10:26,546 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2023-12-21 20:10:26,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 140 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 816 Invalid, 2 Unknown, 0 Unchecked, 15.9s Time] [2023-12-21 20:10:26,547 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 20:10:26,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-21 20:10:26,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-21 20:10:26,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-21 20:10:26,949 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (66states) and FLOYD_HOARE automaton (currently 42 states, 56 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 113 known predicates. [2023-12-21 20:10:26,953 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 2, 1, 1, 1, 1] [2023-12-21 20:10:26,955 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 20:10:26,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 08:10:26 BoogieIcfgContainer [2023-12-21 20:10:26,956 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 20:10:26,957 INFO L158 Benchmark]: Toolchain (without parser) took 870931.18ms. Allocated memory was 200.3MB in the beginning and 247.5MB in the end (delta: 47.2MB). Free memory was 155.0MB in the beginning and 134.1MB in the end (delta: 21.0MB). Peak memory consumption was 68.8MB. Max. memory is 8.0GB. [2023-12-21 20:10:26,957 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 200.3MB. Free memory was 157.0MB in the beginning and 156.9MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 20:10:26,957 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.82ms. Allocated memory is still 200.3MB. Free memory was 155.0MB in the beginning and 143.4MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 20:10:26,957 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.84ms. Allocated memory is still 200.3MB. Free memory was 143.4MB in the beginning and 141.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 20:10:26,957 INFO L158 Benchmark]: Boogie Preprocessor took 53.05ms. Allocated memory is still 200.3MB. Free memory was 141.4MB in the beginning and 139.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 20:10:26,957 INFO L158 Benchmark]: RCFGBuilder took 339.97ms. Allocated memory is still 200.3MB. Free memory was 139.3MB in the beginning and 124.2MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-21 20:10:26,958 INFO L158 Benchmark]: TraceAbstraction took 870285.47ms. Allocated memory was 200.3MB in the beginning and 247.5MB in the end (delta: 47.2MB). Free memory was 123.6MB in the beginning and 134.1MB in the end (delta: -10.5MB). Peak memory consumption was 37.3MB. Max. memory is 8.0GB. [2023-12-21 20:10:26,959 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 200.3MB. Free memory was 157.0MB in the beginning and 156.9MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.82ms. Allocated memory is still 200.3MB. Free memory was 155.0MB in the beginning and 143.4MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.84ms. Allocated memory is still 200.3MB. Free memory was 143.4MB in the beginning and 141.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.05ms. Allocated memory is still 200.3MB. Free memory was 141.4MB in the beginning and 139.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 339.97ms. Allocated memory is still 200.3MB. Free memory was 139.3MB in the beginning and 124.2MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 870285.47ms. Allocated memory was 200.3MB in the beginning and 247.5MB in the end (delta: 47.2MB). Free memory was 123.6MB in the beginning and 134.1MB in the end (delta: -10.5MB). Peak memory consumption was 37.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was constructing difference of abstraction (66states) and FLOYD_HOARE automaton (currently 42 states, 56 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 113 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 870.2s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 58.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 938 SdHoareTripleChecker+Valid, 29.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 912 mSDsluCounter, 2106 SdHoareTripleChecker+Invalid, 29.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1822 mSDsCounter, 241 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4722 IncrementalHoareTripleChecker+Invalid, 4966 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 241 mSolverCounterUnsat, 284 mSDtfsCounter, 4722 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1422 GetRequests, 846 SyntacticMatches, 34 SemanticMatches, 541 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12944 ImplicationChecksByTransitivity, 795.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=11, InterpolantAutomatonStates: 247, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 259 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 805.9s InterpolantComputationTime, 789 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 921 ConstructedInterpolants, 338 QuantifiedInterpolants, 19378 SizeOfPredicates, 269 NumberOfNonLiveVariables, 1743 ConjunctsInSsa, 546 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 481/710 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown