/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/recursified_loop-crafted/recursified_simple_array_index_value_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:47:42,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:47:42,064 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:47:42,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:47:42,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:47:42,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:47:42,099 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:47:42,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:47:42,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:47:42,102 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:47:42,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:47:42,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:47:42,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:47:42,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:47:42,104 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:47:42,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:47:42,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:47:42,105 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:47:42,105 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:47:42,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:47:42,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:47:42,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:47:42,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:47:42,106 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:47:42,106 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:47:42,106 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:47:42,107 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:47:42,107 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:47:42,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:47:42,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:47:42,108 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:47:42,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:47:42,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:47:42,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:47:42,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:47:42,108 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:47:42,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:47:42,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:47:42,109 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:47:42,109 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:47:42,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:47:42,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:47:42,109 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:47:42,109 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:47:42,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:47:42,110 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:47:42,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:47:42,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:47:42,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:47:42,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:47:42,304 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:47:42,305 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:47:42,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_2.i [2023-12-16 17:47:43,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:47:43,462 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:47:43,462 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_2.i [2023-12-16 17:47:43,468 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05e08eee/f2a663a40b304245bde745791d918976/FLAG73272313b [2023-12-16 17:47:43,484 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05e08eee/f2a663a40b304245bde745791d918976 [2023-12-16 17:47:43,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:47:43,487 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:47:43,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:47:43,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:47:43,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:47:43,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ff93cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43, skipping insertion in model container [2023-12-16 17:47:43,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,509 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:47:43,606 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_2.i[1800,1813] [2023-12-16 17:47:43,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:47:43,625 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:47:43,633 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-crafted/recursified_simple_array_index_value_2.i[1800,1813] [2023-12-16 17:47:43,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:47:43,650 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:47:43,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43 WrapperNode [2023-12-16 17:47:43,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:47:43,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:47:43,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:47:43,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:47:43,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,674 INFO L138 Inliner]: procedures = 21, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2023-12-16 17:47:43,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:47:43,675 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:47:43,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:47:43,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:47:43,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,688 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,699 INFO L175 MemorySlicer]: Split 16 memory accesses to 3 slices as follows [2, 12, 2]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 5 writes are split as follows [0, 4, 1]. [2023-12-16 17:47:43,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:47:43,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:47:43,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:47:43,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:47:43,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (1/1) ... [2023-12-16 17:47:43,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:47:43,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:47:43,736 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) [2023-12-16 17:47:43,744 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 [2023-12-16 17:47:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:47:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:47:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 17:47:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 17:47:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 17:47:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_38_to_41_0 [2023-12-16 17:47:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_38_to_41_0 [2023-12-16 17:47:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 17:47:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 17:47:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 17:47:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_44_to_45_0 [2023-12-16 17:47:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_44_to_45_0 [2023-12-16 17:47:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:47:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:47:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 17:47:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 17:47:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 17:47:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 17:47:43,843 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:47:43,845 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:47:43,968 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:47:43,989 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:47:43,989 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 17:47:43,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:47:43 BoogieIcfgContainer [2023-12-16 17:47:43,990 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:47:43,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:47:43,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:47:43,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:47:43,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:47:43" (1/3) ... [2023-12-16 17:47:43,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55895c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:47:43, skipping insertion in model container [2023-12-16 17:47:43,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:43" (2/3) ... [2023-12-16 17:47:43,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55895c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:47:43, skipping insertion in model container [2023-12-16 17:47:43,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:47:43" (3/3) ... [2023-12-16 17:47:43,995 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_simple_array_index_value_2.i [2023-12-16 17:47:44,009 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:47:44,009 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:47:44,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:47:44,050 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;@2a5ece0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:47:44,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:47:44,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 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) [2023-12-16 17:47:44,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-16 17:47:44,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:47:44,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:47:44,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:47:44,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:47:44,069 INFO L85 PathProgramCache]: Analyzing trace with hash 290853727, now seen corresponding path program 1 times [2023-12-16 17:47:44,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:47:44,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550115771] [2023-12-16 17:47:44,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:47:44,078 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 [2023-12-16 17:47:44,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:47:44,080 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) [2023-12-16 17:47:44,086 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 [2023-12-16 17:47:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:47:44,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:47:44,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:47:44,234 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 11 treesize of output 7 [2023-12-16 17:47:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:47:44,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:47:44,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:47:44,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550115771] [2023-12-16 17:47:44,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550115771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:47:44,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:47:44,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:47:44,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222725436] [2023-12-16 17:47:44,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:47:44,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:47:44,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:47:44,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:47:44,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:47:44,376 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 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) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:47:44,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:47:44,493 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2023-12-16 17:47:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:47:44,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-16 17:47:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:47:44,500 INFO L225 Difference]: With dead ends: 47 [2023-12-16 17:47:44,500 INFO L226 Difference]: Without dead ends: 20 [2023-12-16 17:47:44,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:47:44,505 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:47:44,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 40 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:47:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-16 17:47:44,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-16 17:47:44,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 17:47:44,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-12-16 17:47:44,530 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2023-12-16 17:47:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:47:44,530 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-12-16 17:47:44,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:47:44,530 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-12-16 17:47:44,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 17:47:44,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:47:44,531 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:47:44,538 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 [2023-12-16 17:47:44,736 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 [2023-12-16 17:47:44,736 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:47:44,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:47:44,737 INFO L85 PathProgramCache]: Analyzing trace with hash -813217266, now seen corresponding path program 1 times [2023-12-16 17:47:44,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:47:44,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63844885] [2023-12-16 17:47:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:47:44,738 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 [2023-12-16 17:47:44,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:47:44,739 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) [2023-12-16 17:47:44,740 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 [2023-12-16 17:47:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:47:44,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 17:47:44,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:47:44,799 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 11 treesize of output 7 [2023-12-16 17:47:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:47:45,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:47:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:47:45,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:47:45,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63844885] [2023-12-16 17:47:45,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63844885] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:47:45,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:47:45,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-16 17:47:45,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141195280] [2023-12-16 17:47:45,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:47:45,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 17:47:45,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:47:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 17:47:45,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-12-16 17:47:45,491 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 17 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 17:47:45,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:47:45,770 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2023-12-16 17:47:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 17:47:45,771 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2023-12-16 17:47:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:47:45,772 INFO L225 Difference]: With dead ends: 31 [2023-12-16 17:47:45,772 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 17:47:45,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-16 17:47:45,773 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:47:45,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 70 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:47:45,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 17:47:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-16 17:47:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 17:47:45,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-12-16 17:47:45,779 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2023-12-16 17:47:45,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:47:45,779 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-12-16 17:47:45,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 17:47:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-12-16 17:47:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 17:47:45,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:47:45,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:47:45,784 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 (3)] Forceful destruction successful, exit code 0 [2023-12-16 17:47:45,980 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 [2023-12-16 17:47:45,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:47:45,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:47:45,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1129500737, now seen corresponding path program 2 times [2023-12-16 17:47:45,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:47:45,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198526059] [2023-12-16 17:47:45,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:47:45,982 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 [2023-12-16 17:47:45,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:47:45,983 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) [2023-12-16 17:47:46,013 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 [2023-12-16 17:47:46,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:47:46,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:47:46,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 17:47:46,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:47:46,065 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 11 treesize of output 7 [2023-12-16 17:47:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 17:47:46,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:47:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:47:47,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:47:47,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198526059] [2023-12-16 17:47:47,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198526059] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:47:47,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:47:47,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 21 [2023-12-16 17:47:47,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126756836] [2023-12-16 17:47:47,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:47:47,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 17:47:47,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:47:47,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 17:47:47,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-12-16 17:47:47,079 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 22 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-16 17:47:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:47:47,394 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2023-12-16 17:47:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:47:47,395 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 26 [2023-12-16 17:47:47,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:47:47,395 INFO L225 Difference]: With dead ends: 33 [2023-12-16 17:47:47,395 INFO L226 Difference]: Without dead ends: 24 [2023-12-16 17:47:47,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2023-12-16 17:47:47,396 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:47:47,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 78 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:47:47,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-16 17:47:47,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-16 17:47:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 17:47:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-12-16 17:47:47,400 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 26 [2023-12-16 17:47:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:47:47,401 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-12-16 17:47:47,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-16 17:47:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-12-16 17:47:47,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 17:47:47,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:47:47,401 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:47:47,409 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 [2023-12-16 17:47:47,602 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 [2023-12-16 17:47:47,602 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:47:47,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:47:47,603 INFO L85 PathProgramCache]: Analyzing trace with hash 33493038, now seen corresponding path program 3 times [2023-12-16 17:47:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:47:47,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768358578] [2023-12-16 17:47:47,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:47:47,603 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 [2023-12-16 17:47:47,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:47:47,604 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) [2023-12-16 17:47:47,606 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 [2023-12-16 17:47:47,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 17:47:47,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:47:47,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 17:47:47,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:47:47,692 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 11 treesize of output 7 [2023-12-16 17:47:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 17:47:48,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:47:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:47:49,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:47:49,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768358578] [2023-12-16 17:47:49,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768358578] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:47:49,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:47:49,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 30 [2023-12-16 17:47:49,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048654467] [2023-12-16 17:47:49,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:47:49,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-16 17:47:49,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:47:49,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-16 17:47:49,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2023-12-16 17:47:49,713 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 31 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-16 17:47:50,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:47:50,440 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2023-12-16 17:47:50,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 17:47:50,440 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 33 [2023-12-16 17:47:50,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:47:50,441 INFO L225 Difference]: With dead ends: 40 [2023-12-16 17:47:50,441 INFO L226 Difference]: Without dead ends: 31 [2023-12-16 17:47:50,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=221, Invalid=1111, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 17:47:50,442 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:47:50,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 107 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:47:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-16 17:47:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2023-12-16 17:47:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-16 17:47:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-12-16 17:47:50,447 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 33 [2023-12-16 17:47:50,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:47:50,447 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-12-16 17:47:50,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-16 17:47:50,447 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-12-16 17:47:50,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 17:47:50,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:47:50,448 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:47:50,453 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 (5)] Forceful destruction successful, exit code 0 [2023-12-16 17:47:50,651 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 [2023-12-16 17:47:50,651 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:47:50,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:47:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash -195283937, now seen corresponding path program 4 times [2023-12-16 17:47:50,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:47:50,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594270074] [2023-12-16 17:47:50,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:47:50,652 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 [2023-12-16 17:47:50,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:47:50,653 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) [2023-12-16 17:47:50,654 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 [2023-12-16 17:47:50,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:47:50,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:47:50,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-16 17:47:50,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:47:50,769 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 11 treesize of output 7 [2023-12-16 17:47:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 17:47:51,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:47:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:47:52,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:47:52,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594270074] [2023-12-16 17:47:52,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594270074] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:47:52,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:47:52,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21] total 31 [2023-12-16 17:47:52,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594288698] [2023-12-16 17:47:52,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:47:52,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 17:47:52,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:47:52,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 17:47:52,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2023-12-16 17:47:52,874 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 32 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-16 17:47:53,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:47:53,449 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2023-12-16 17:47:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 17:47:53,449 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) Word has length 40 [2023-12-16 17:47:53,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:47:53,450 INFO L225 Difference]: With dead ends: 37 [2023-12-16 17:47:53,450 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 17:47:53,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 17:47:53,452 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 51 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:47:53,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 129 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:47:53,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 17:47:53,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-16 17:47:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 17:47:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-12-16 17:47:53,456 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 40 [2023-12-16 17:47:53,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:47:53,456 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-12-16 17:47:53,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-16 17:47:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-12-16 17:47:53,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-16 17:47:53,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:47:53,457 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:47:53,462 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 (6)] Forceful destruction successful, exit code 0 [2023-12-16 17:47:53,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-16 17:47:53,663 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:47:53,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:47:53,663 INFO L85 PathProgramCache]: Analyzing trace with hash 511618638, now seen corresponding path program 5 times [2023-12-16 17:47:53,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:47:53,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809449260] [2023-12-16 17:47:53,664 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:47:53,664 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 [2023-12-16 17:47:53,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:47:53,665 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2023-12-16 17:47:53,680 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 (7)] Waiting until timeout for monitored process [2023-12-16 17:47:53,774 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-16 17:47:53,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:47:53,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-16 17:47:53,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:47:53,786 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 11 treesize of output 7 [2023-12-16 17:47:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 24 proven. 35 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 17:47:54,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:47:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:47:57,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:47:57,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809449260] [2023-12-16 17:47:57,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809449260] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:47:57,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:47:57,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27] total 41 [2023-12-16 17:47:57,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193132224] [2023-12-16 17:47:57,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:47:57,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-16 17:47:57,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:47:57,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-16 17:47:57,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1500, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 17:47:57,546 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 42 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-16 17:47:59,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:47:59,024 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2023-12-16 17:47:59,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:47:59,025 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) Word has length 47 [2023-12-16 17:47:59,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:47:59,026 INFO L225 Difference]: With dead ends: 44 [2023-12-16 17:47:59,026 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 17:47:59,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=376, Invalid=2074, Unknown=0, NotChecked=0, Total=2450 [2023-12-16 17:47:59,027 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 73 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:47:59,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 214 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 17:47:59,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 17:47:59,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2023-12-16 17:47:59,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:47:59,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-12-16 17:47:59,039 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 47 [2023-12-16 17:47:59,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:47:59,039 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-12-16 17:47:59,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-16 17:47:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-12-16 17:47:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 17:47:59,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:47:59,043 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:47:59,048 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 (7)] Forceful destruction successful, exit code 0 [2023-12-16 17:47:59,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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 [2023-12-16 17:47:59,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:47:59,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:47:59,249 INFO L85 PathProgramCache]: Analyzing trace with hash -849010561, now seen corresponding path program 6 times [2023-12-16 17:47:59,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:47:59,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283776491] [2023-12-16 17:47:59,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 17:47:59,249 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 [2023-12-16 17:47:59,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:47:59,250 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) [2023-12-16 17:47:59,251 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 [2023-12-16 17:47:59,390 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-16 17:47:59,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:47:59,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-16 17:47:59,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:47:59,399 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 11 treesize of output 7 [2023-12-16 17:47:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 20 proven. 48 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-16 17:47:59,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:48:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:03,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:03,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283776491] [2023-12-16 17:48:03,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283776491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:48:03,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:48:03,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 30] total 45 [2023-12-16 17:48:03,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164034305] [2023-12-16 17:48:03,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:48:03,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-16 17:48:03,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:03,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-16 17:48:03,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1818, Unknown=0, NotChecked=0, Total=2070 [2023-12-16 17:48:03,987 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 46 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 11 states have call successors, (11), 9 states have call predecessors, (11), 14 states have return successors, (14), 13 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-16 17:48:05,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:05,782 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2023-12-16 17:48:05,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 17:48:05,783 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 11 states have call successors, (11), 9 states have call predecessors, (11), 14 states have return successors, (14), 13 states have call predecessors, (14), 10 states have call successors, (14) Word has length 54 [2023-12-16 17:48:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:05,783 INFO L225 Difference]: With dead ends: 46 [2023-12-16 17:48:05,783 INFO L226 Difference]: Without dead ends: 37 [2023-12-16 17:48:05,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=443, Invalid=2527, Unknown=0, NotChecked=0, Total=2970 [2023-12-16 17:48:05,789 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 105 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:05,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 200 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 17:48:05,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-16 17:48:05,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2023-12-16 17:48:05,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-16 17:48:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-12-16 17:48:05,794 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 54 [2023-12-16 17:48:05,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:05,794 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-12-16 17:48:05,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 11 states have call successors, (11), 9 states have call predecessors, (11), 14 states have return successors, (14), 13 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-16 17:48:05,794 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-12-16 17:48:05,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 17:48:05,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:05,795 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:05,801 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 [2023-12-16 17:48:05,999 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 [2023-12-16 17:48:05,999 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:05,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:06,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1902388334, now seen corresponding path program 7 times [2023-12-16 17:48:06,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:06,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563253197] [2023-12-16 17:48:06,000 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 17:48:06,000 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 [2023-12-16 17:48:06,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:06,010 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) [2023-12-16 17:48:06,011 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 [2023-12-16 17:48:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:48:06,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-16 17:48:06,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:06,128 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 11 treesize of output 7 [2023-12-16 17:48:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 17:48:06,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:48:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:10,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:10,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563253197] [2023-12-16 17:48:10,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563253197] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:48:10,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:48:10,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 33] total 46 [2023-12-16 17:48:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813142914] [2023-12-16 17:48:10,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:48:10,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-16 17:48:10,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:10,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-16 17:48:10,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1946, Unknown=0, NotChecked=0, Total=2162 [2023-12-16 17:48:10,601 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 47 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 37 states have internal predecessors, (59), 11 states have call successors, (11), 10 states have call predecessors, (11), 16 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-16 17:48:12,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:12,133 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2023-12-16 17:48:12,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 17:48:12,134 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 37 states have internal predecessors, (59), 11 states have call successors, (11), 10 states have call predecessors, (11), 16 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) Word has length 61 [2023-12-16 17:48:12,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:12,134 INFO L225 Difference]: With dead ends: 43 [2023-12-16 17:48:12,135 INFO L226 Difference]: Without dead ends: 34 [2023-12-16 17:48:12,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=391, Invalid=2689, Unknown=0, NotChecked=0, Total=3080 [2023-12-16 17:48:12,136 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:12,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 323 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 17:48:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-16 17:48:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-12-16 17:48:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.1) internal successors, (22), 22 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-16 17:48:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2023-12-16 17:48:12,139 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 61 [2023-12-16 17:48:12,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:12,139 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2023-12-16 17:48:12,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 37 states have internal predecessors, (59), 11 states have call successors, (11), 10 states have call predecessors, (11), 16 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-16 17:48:12,139 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2023-12-16 17:48:12,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 17:48:12,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:12,140 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:12,146 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 17:48:12,345 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 [2023-12-16 17:48:12,345 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:12,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:12,346 INFO L85 PathProgramCache]: Analyzing trace with hash 894039263, now seen corresponding path program 8 times [2023-12-16 17:48:12,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:12,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400727327] [2023-12-16 17:48:12,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 17:48:12,346 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 [2023-12-16 17:48:12,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:12,347 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) [2023-12-16 17:48:12,350 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 [2023-12-16 17:48:12,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 17:48:12,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:48:12,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-16 17:48:12,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:12,489 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 11 treesize of output 7 [2023-12-16 17:48:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-16 17:48:13,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:48:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:17,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:17,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400727327] [2023-12-16 17:48:17,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400727327] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:48:17,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:48:17,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 37] total 51 [2023-12-16 17:48:17,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123760032] [2023-12-16 17:48:17,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:48:17,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-16 17:48:17,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:17,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-16 17:48:17,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2406, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 17:48:17,976 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 52 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 41 states have internal predecessors, (65), 12 states have call successors, (12), 11 states have call predecessors, (12), 18 states have return successors, (18), 17 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-16 17:48:19,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:19,757 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2023-12-16 17:48:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:48:19,757 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 41 states have internal predecessors, (65), 12 states have call successors, (12), 11 states have call predecessors, (12), 18 states have return successors, (18), 17 states have call predecessors, (18), 11 states have call successors, (18) Word has length 68 [2023-12-16 17:48:19,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:19,758 INFO L225 Difference]: With dead ends: 45 [2023-12-16 17:48:19,758 INFO L226 Difference]: Without dead ends: 36 [2023-12-16 17:48:19,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=456, Invalid=3326, Unknown=0, NotChecked=0, Total=3782 [2023-12-16 17:48:19,759 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 87 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:19,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 349 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 17:48:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-16 17:48:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-16 17:48:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-16 17:48:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2023-12-16 17:48:19,767 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 68 [2023-12-16 17:48:19,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:19,767 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2023-12-16 17:48:19,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 41 states have internal predecessors, (65), 12 states have call successors, (12), 11 states have call predecessors, (12), 18 states have return successors, (18), 17 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-16 17:48:19,767 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2023-12-16 17:48:19,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 17:48:19,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:19,768 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:19,777 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 (10)] Forceful destruction successful, exit code 0 [2023-12-16 17:48:19,972 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 [2023-12-16 17:48:19,972 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:19,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash 244150926, now seen corresponding path program 9 times [2023-12-16 17:48:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837046363] [2023-12-16 17:48:19,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 17:48:19,973 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 [2023-12-16 17:48:19,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:19,974 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) [2023-12-16 17:48:19,975 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 [2023-12-16 17:48:20,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-16 17:48:20,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:48:20,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 84 conjunts are in the unsatisfiable core [2023-12-16 17:48:20,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:20,212 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 11 treesize of output 7 [2023-12-16 17:48:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 32 proven. 99 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-16 17:48:20,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:48:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:28,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:28,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837046363] [2023-12-16 17:48:28,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837046363] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:48:28,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:48:28,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 42] total 60 [2023-12-16 17:48:28,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736950229] [2023-12-16 17:48:28,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:48:28,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-16 17:48:28,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:28,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-16 17:48:28,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=3282, Unknown=0, NotChecked=0, Total=3660 [2023-12-16 17:48:28,702 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 61 states, 48 states have (on average 1.5625) internal successors, (75), 49 states have internal predecessors, (75), 14 states have call successors, (14), 12 states have call predecessors, (14), 20 states have return successors, (20), 19 states have call predecessors, (20), 13 states have call successors, (20) [2023-12-16 17:48:32,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:32,513 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2023-12-16 17:48:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 17:48:32,514 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 48 states have (on average 1.5625) internal successors, (75), 49 states have internal predecessors, (75), 14 states have call successors, (14), 12 states have call predecessors, (14), 20 states have return successors, (20), 19 states have call predecessors, (20), 13 states have call successors, (20) Word has length 75 [2023-12-16 17:48:32,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:32,514 INFO L225 Difference]: With dead ends: 52 [2023-12-16 17:48:32,514 INFO L226 Difference]: Without dead ends: 43 [2023-12-16 17:48:32,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=737, Invalid=4519, Unknown=0, NotChecked=0, Total=5256 [2023-12-16 17:48:32,516 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 215 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:32,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 314 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 17:48:32,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-16 17:48:32,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2023-12-16 17:48:32,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 24 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-16 17:48:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-12-16 17:48:32,519 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 75 [2023-12-16 17:48:32,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:32,519 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-12-16 17:48:32,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 48 states have (on average 1.5625) internal successors, (75), 49 states have internal predecessors, (75), 14 states have call successors, (14), 12 states have call predecessors, (14), 20 states have return successors, (20), 19 states have call predecessors, (20), 13 states have call successors, (20) [2023-12-16 17:48:32,520 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-12-16 17:48:32,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 17:48:32,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:32,520 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:32,529 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 [2023-12-16 17:48:32,721 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 [2023-12-16 17:48:32,721 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:32,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:32,721 INFO L85 PathProgramCache]: Analyzing trace with hash 302821695, now seen corresponding path program 10 times [2023-12-16 17:48:32,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:32,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385336919] [2023-12-16 17:48:32,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 17:48:32,722 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 [2023-12-16 17:48:32,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:32,723 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-12-16 17:48:32,764 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 (12)] Waiting until timeout for monitored process [2023-12-16 17:48:32,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 17:48:32,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:48:32,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-16 17:48:32,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:32,917 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 11 treesize of output 7 [2023-12-16 17:48:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-16 17:48:33,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:48:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:48:40,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:48:40,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385336919] [2023-12-16 17:48:40,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385336919] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:48:40,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:48:40,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 45] total 61 [2023-12-16 17:48:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779649498] [2023-12-16 17:48:40,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:48:40,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-16 17:48:40,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:48:40,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-16 17:48:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=3473, Unknown=0, NotChecked=0, Total=3782 [2023-12-16 17:48:40,806 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 62 states, 49 states have (on average 1.5714285714285714) internal successors, (77), 49 states have internal predecessors, (77), 14 states have call successors, (14), 13 states have call predecessors, (14), 22 states have return successors, (22), 21 states have call predecessors, (22), 13 states have call successors, (22) [2023-12-16 17:48:43,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:48:43,468 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2023-12-16 17:48:43,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 17:48:43,469 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 49 states have (on average 1.5714285714285714) internal successors, (77), 49 states have internal predecessors, (77), 14 states have call successors, (14), 13 states have call predecessors, (14), 22 states have return successors, (22), 21 states have call predecessors, (22), 13 states have call successors, (22) Word has length 82 [2023-12-16 17:48:43,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:48:43,470 INFO L225 Difference]: With dead ends: 49 [2023-12-16 17:48:43,470 INFO L226 Difference]: Without dead ends: 40 [2023-12-16 17:48:43,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1137 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=598, Invalid=4804, Unknown=0, NotChecked=0, Total=5402 [2023-12-16 17:48:43,471 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 141 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:48:43,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 456 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 17:48:43,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-16 17:48:43,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-16 17:48:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 17:48:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2023-12-16 17:48:43,474 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 82 [2023-12-16 17:48:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:48:43,474 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2023-12-16 17:48:43,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 49 states have (on average 1.5714285714285714) internal successors, (77), 49 states have internal predecessors, (77), 14 states have call successors, (14), 13 states have call predecessors, (14), 22 states have return successors, (22), 21 states have call predecessors, (22), 13 states have call successors, (22) [2023-12-16 17:48:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2023-12-16 17:48:43,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-16 17:48:43,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:48:43,475 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:48:43,482 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 (12)] Forceful destruction successful, exit code 0 [2023-12-16 17:48:43,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 [2023-12-16 17:48:43,680 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:48:43,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:48:43,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1319593810, now seen corresponding path program 11 times [2023-12-16 17:48:43,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:48:43,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61927978] [2023-12-16 17:48:43,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 17:48:43,681 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 [2023-12-16 17:48:43,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:48:43,681 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) [2023-12-16 17:48:43,683 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 [2023-12-16 17:48:43,990 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-16 17:48:43,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 17:48:43,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-16 17:48:44,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:48:44,014 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 11 treesize of output 7 [2023-12-16 17:48:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 72 proven. 143 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-12-16 17:48:45,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 17:48:56,528 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:48:56,533 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 [2023-12-16 17:48:56,534 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 [2023-12-16 17:48:56,558 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 (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:48:56,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-16 17:48:56,729 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 90 with TraceHistMax 12,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 72 known predicates. [2023-12-16 17:48:56,732 INFO L445 BasicCegarLoop]: Path program histogram: [11, 1] [2023-12-16 17:48:56,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:48:56,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:48:56 BoogieIcfgContainer [2023-12-16 17:48:56,735 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:48:56,735 INFO L158 Benchmark]: Toolchain (without parser) took 73248.35ms. Allocated memory was 243.3MB in the beginning and 351.3MB in the end (delta: 108.0MB). Free memory was 187.5MB in the beginning and 247.7MB in the end (delta: -60.2MB). Peak memory consumption was 48.5MB. Max. memory is 8.0GB. [2023-12-16 17:48:56,735 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 182.5MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:48:56,735 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.29ms. Allocated memory is still 243.3MB. Free memory was 186.9MB in the beginning and 175.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 17:48:56,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.12ms. Allocated memory is still 243.3MB. Free memory was 175.4MB in the beginning and 173.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:48:56,736 INFO L158 Benchmark]: Boogie Preprocessor took 37.51ms. Allocated memory is still 243.3MB. Free memory was 173.8MB in the beginning and 171.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:48:56,736 INFO L158 Benchmark]: RCFGBuilder took 276.36ms. Allocated memory is still 243.3MB. Free memory was 171.7MB in the beginning and 157.6MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 17:48:56,736 INFO L158 Benchmark]: TraceAbstraction took 72743.73ms. Allocated memory was 243.3MB in the beginning and 351.3MB in the end (delta: 108.0MB). Free memory was 156.5MB in the beginning and 247.7MB in the end (delta: -91.1MB). Peak memory consumption was 18.1MB. Max. memory is 8.0GB. [2023-12-16 17:48:56,740 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 182.5MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 161.29ms. Allocated memory is still 243.3MB. Free memory was 186.9MB in the beginning and 175.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.12ms. Allocated memory is still 243.3MB. Free memory was 175.4MB in the beginning and 173.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.51ms. Allocated memory is still 243.3MB. Free memory was 173.8MB in the beginning and 171.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 276.36ms. Allocated memory is still 243.3MB. Free memory was 171.7MB in the beginning and 157.6MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 72743.73ms. Allocated memory was 243.3MB in the beginning and 351.3MB in the end (delta: 108.0MB). Free memory was 156.5MB in the beginning and 247.7MB in the end (delta: -91.1MB). Peak memory consumption was 18.1MB. 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: 50]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 50). Cancelled while NwaCegarLoop was analyzing trace of length 90 with TraceHistMax 12,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 72 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.7s, OverallIterations: 12, TraceHistogramMax: 12, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 15.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 818 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 818 mSDsluCounter, 2280 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2109 mSDsCounter, 644 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3962 IncrementalHoareTripleChecker+Invalid, 4606 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 644 mSolverCounterUnsat, 171 mSDtfsCounter, 3962 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1081 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 476 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5900 ImplicationChecksByTransitivity, 23.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=11, InterpolantAutomatonStates: 153, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 40.7s InterpolantComputationTime, 517 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1001 ConstructedInterpolants, 0 QuantifiedInterpolants, 16856 SizeOfPredicates, 162 NumberOfNonLiveVariables, 2145 ConjunctsInSsa, 560 ConjunctsInUnsatCore, 21 InterpolantComputations, 1 PerfectInterpolantSequences, 880/2750 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