/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_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 04:27:47,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 04:27:47,525 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 04:27:47,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 04:27:47,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 04:27:47,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 04:27:47,551 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 04:27:47,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 04:27:47,552 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 04:27:47,555 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 04:27:47,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 04:27:47,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 04:27:47,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 04:27:47,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 04:27:47,557 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 04:27:47,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 04:27:47,557 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 04:27:47,558 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 04:27:47,558 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 04:27:47,558 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 04:27:47,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 04:27:47,558 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 04:27:47,558 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 04:27:47,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 04:27:47,559 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 04:27:47,559 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 04:27:47,559 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 04:27:47,559 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 04:27:47,560 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 04:27:47,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 04:27:47,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 04:27:47,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 04:27:47,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 04:27:47,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 04:27:47,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 04:27:47,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 04:27:47,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 04:27:47,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 04:27:47,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 04:27:47,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 04:27:47,562 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 04:27:47,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 04:27:47,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 04:27:47,562 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 04:27:47,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 04:27:47,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 04:27:47,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 04:27:47,764 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 04:27:47,765 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 04:27:47,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2023-12-21 04:27:48,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 04:27:48,952 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 04:27:48,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2023-12-21 04:27:48,959 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa920926/9f18afd9154041f8bf46f94ac5b9609a/FLAGa92169cc2 [2023-12-21 04:27:48,971 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa920926/9f18afd9154041f8bf46f94ac5b9609a [2023-12-21 04:27:48,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 04:27:48,976 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 04:27:48,978 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 04:27:48,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 04:27:48,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 04:27:48,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:27:48" (1/1) ... [2023-12-21 04:27:48,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9e5066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:48, skipping insertion in model container [2023-12-21 04:27:48,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:27:48" (1/1) ... [2023-12-21 04:27:49,004 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 04:27:49,142 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1215,1228] [2023-12-21 04:27:49,155 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1969,1982] [2023-12-21 04:27:49,159 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2504,2517] [2023-12-21 04:27:49,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 04:27:49,170 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 04:27:49,185 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1215,1228] [2023-12-21 04:27:49,199 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1969,1982] [2023-12-21 04:27:49,200 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2504,2517] [2023-12-21 04:27:49,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 04:27:49,211 INFO L206 MainTranslator]: Completed translation [2023-12-21 04:27:49,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49 WrapperNode [2023-12-21 04:27:49,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 04:27:49,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 04:27:49,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 04:27:49,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 04:27:49,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (1/1) ... [2023-12-21 04:27:49,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (1/1) ... [2023-12-21 04:27:49,237 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 144 [2023-12-21 04:27:49,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 04:27:49,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 04:27:49,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 04:27:49,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 04:27:49,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (1/1) ... [2023-12-21 04:27:49,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (1/1) ... [2023-12-21 04:27:49,251 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (1/1) ... [2023-12-21 04:27:49,259 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-21 04:27:49,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (1/1) ... [2023-12-21 04:27:49,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (1/1) ... [2023-12-21 04:27:49,264 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (1/1) ... [2023-12-21 04:27:49,266 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (1/1) ... [2023-12-21 04:27:49,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (1/1) ... [2023-12-21 04:27:49,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (1/1) ... [2023-12-21 04:27:49,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 04:27:49,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 04:27:49,270 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 04:27:49,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 04:27:49,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (1/1) ... [2023-12-21 04:27:49,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 04:27:49,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:27:49,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 04:27:49,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 04:27:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 04:27:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 04:27:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 04:27:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 04:27:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 04:27:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 04:27:49,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 04:27:49,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 04:27:49,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 04:27:49,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 04:27:49,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 04:27:49,394 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 04:27:49,395 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 04:27:49,560 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 04:27:49,577 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 04:27:49,577 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 04:27:49,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:27:49 BoogieIcfgContainer [2023-12-21 04:27:49,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 04:27:49,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 04:27:49,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 04:27:49,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 04:27:49,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:27:48" (1/3) ... [2023-12-21 04:27:49,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b6863d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:27:49, skipping insertion in model container [2023-12-21 04:27:49,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:27:49" (2/3) ... [2023-12-21 04:27:49,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b6863d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:27:49, skipping insertion in model container [2023-12-21 04:27:49,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:27:49" (3/3) ... [2023-12-21 04:27:49,583 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2023-12-21 04:27:49,594 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 04:27:49,595 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-21 04:27:49,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 04:27:49,636 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;@731e095e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 04:27:49,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-21 04:27:49,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:49,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 04:27:49,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:27:49,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:27:49,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:27:49,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:27:49,658 INFO L85 PathProgramCache]: Analyzing trace with hash -989118573, now seen corresponding path program 1 times [2023-12-21 04:27:49,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:27:49,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176353649] [2023-12-21 04:27:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:27:49,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:27:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:27:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:27:49,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:27:49,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176353649] [2023-12-21 04:27:49,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176353649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:27:49,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:27:49,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 04:27:49,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045847624] [2023-12-21 04:27:49,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:27:49,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 04:27:49,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:27:49,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 04:27:49,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:27:49,891 INFO L87 Difference]: Start difference. First operand has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 30 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:49,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:27:49,935 INFO L93 Difference]: Finished difference Result 61 states and 91 transitions. [2023-12-21 04:27:49,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 04:27:49,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-21 04:27:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:27:49,945 INFO L225 Difference]: With dead ends: 61 [2023-12-21 04:27:49,945 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 04:27:49,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:27:49,950 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:27:49,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:27:49,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 04:27:49,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-21 04:27:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2023-12-21 04:27:49,975 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 10 [2023-12-21 04:27:49,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:27:49,975 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2023-12-21 04:27:49,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:49,976 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2023-12-21 04:27:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 04:27:49,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:27:49,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:27:49,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 04:27:49,977 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:27:49,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:27:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash 447734621, now seen corresponding path program 1 times [2023-12-21 04:27:49,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:27:49,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726331063] [2023-12-21 04:27:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:27:49,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:27:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:27:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:27:50,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:27:50,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726331063] [2023-12-21 04:27:50,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726331063] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:27:50,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795684673] [2023-12-21 04:27:50,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:27:50,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:27:50,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:27:50,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:27:50,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 04:27:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:27:50,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 04:27:50,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:27:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:27:50,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:27:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:27:50,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795684673] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 04:27:50,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 04:27:50,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 4] total 10 [2023-12-21 04:27:50,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894841375] [2023-12-21 04:27:50,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:27:50,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 04:27:50,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:27:50,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 04:27:50,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 04:27:50,393 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:50,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:27:50,425 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2023-12-21 04:27:50,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 04:27:50,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-21 04:27:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:27:50,426 INFO L225 Difference]: With dead ends: 36 [2023-12-21 04:27:50,426 INFO L226 Difference]: Without dead ends: 31 [2023-12-21 04:27:50,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 04:27:50,427 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 39 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:27:50,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 77 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:27:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-21 04:27:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-12-21 04:27:50,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-12-21 04:27:50,430 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 11 [2023-12-21 04:27:50,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:27:50,431 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-12-21 04:27:50,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:50,431 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-12-21 04:27:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 04:27:50,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:27:50,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:27:50,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 04:27:50,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:27:50,638 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:27:50,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:27:50,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1185967719, now seen corresponding path program 1 times [2023-12-21 04:27:50,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:27:50,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590095222] [2023-12-21 04:27:50,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:27:50,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:27:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:27:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:27:50,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:27:50,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590095222] [2023-12-21 04:27:50,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590095222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:27:50,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:27:50,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 04:27:50,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942895997] [2023-12-21 04:27:50,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:27:50,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 04:27:50,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:27:50,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 04:27:50,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:27:50,680 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:50,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:27:50,707 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2023-12-21 04:27:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 04:27:50,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-21 04:27:50,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:27:50,709 INFO L225 Difference]: With dead ends: 56 [2023-12-21 04:27:50,709 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 04:27:50,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:27:50,711 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:27:50,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 37 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:27:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 04:27:50,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2023-12-21 04:27:50,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-12-21 04:27:50,714 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 12 [2023-12-21 04:27:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:27:50,714 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-12-21 04:27:50,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-12-21 04:27:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 04:27:50,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:27:50,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:27:50,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 04:27:50,715 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:27:50,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:27:50,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1254457228, now seen corresponding path program 1 times [2023-12-21 04:27:50,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:27:50,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083508756] [2023-12-21 04:27:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:27:50,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:27:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:27:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:27:50,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:27:50,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083508756] [2023-12-21 04:27:50,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083508756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:27:50,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:27:50,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 04:27:50,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527057391] [2023-12-21 04:27:50,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:27:50,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 04:27:50,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:27:50,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 04:27:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 04:27:50,778 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:50,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:27:50,809 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2023-12-21 04:27:50,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 04:27:50,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-21 04:27:50,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:27:50,811 INFO L225 Difference]: With dead ends: 49 [2023-12-21 04:27:50,811 INFO L226 Difference]: Without dead ends: 47 [2023-12-21 04:27:50,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 04:27:50,815 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:27:50,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 82 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:27:50,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-21 04:27:50,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 31. [2023-12-21 04:27:50,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:50,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-12-21 04:27:50,820 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 12 [2023-12-21 04:27:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:27:50,820 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-12-21 04:27:50,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:50,821 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-12-21 04:27:50,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-21 04:27:50,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:27:50,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:27:50,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 04:27:50,821 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:27:50,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:27:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash -171506001, now seen corresponding path program 1 times [2023-12-21 04:27:50,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:27:50,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555211626] [2023-12-21 04:27:50,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:27:50,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:27:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:27:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 04:27:50,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:27:50,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555211626] [2023-12-21 04:27:50,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555211626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:27:50,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:27:50,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 04:27:50,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165117683] [2023-12-21 04:27:50,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:27:50,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 04:27:50,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:27:50,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 04:27:50,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:27:50,863 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:50,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:27:50,883 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2023-12-21 04:27:50,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 04:27:50,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-21 04:27:50,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:27:50,884 INFO L225 Difference]: With dead ends: 52 [2023-12-21 04:27:50,884 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 04:27:50,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:27:50,885 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:27:50,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 35 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:27:50,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 04:27:50,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2023-12-21 04:27:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-12-21 04:27:50,890 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2023-12-21 04:27:50,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:27:50,890 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-12-21 04:27:50,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-12-21 04:27:50,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 04:27:50,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:27:50,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:27:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 04:27:50,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:27:50,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:27:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1887901844, now seen corresponding path program 1 times [2023-12-21 04:27:50,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:27:50,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018112867] [2023-12-21 04:27:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:27:50,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:27:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:27:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:27:51,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:27:51,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018112867] [2023-12-21 04:27:51,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018112867] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:27:51,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651639103] [2023-12-21 04:27:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:27:51,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:27:51,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:27:51,005 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:27:51,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 04:27:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:27:51,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 04:27:51,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:27:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:27:51,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:27:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:27:51,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651639103] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:27:51,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:27:51,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-21 04:27:51,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664349820] [2023-12-21 04:27:51,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:27:51,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 04:27:51,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:27:51,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 04:27:51,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 04:27:51,096 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:51,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:27:51,124 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2023-12-21 04:27:51,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 04:27:51,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-21 04:27:51,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:27:51,125 INFO L225 Difference]: With dead ends: 52 [2023-12-21 04:27:51,125 INFO L226 Difference]: Without dead ends: 29 [2023-12-21 04:27:51,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-21 04:27:51,126 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:27:51,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:27:51,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-21 04:27:51,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-21 04:27:51,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:51,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-12-21 04:27:51,133 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 18 [2023-12-21 04:27:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:27:51,133 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-12-21 04:27:51,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-12-21 04:27:51,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 04:27:51,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:27:51,134 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:27:51,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 04:27:51,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-21 04:27:51,339 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:27:51,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:27:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1838694686, now seen corresponding path program 2 times [2023-12-21 04:27:51,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:27:51,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025608590] [2023-12-21 04:27:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:27:51,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:27:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:27:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:27:51,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:27:51,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025608590] [2023-12-21 04:27:51,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025608590] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:27:51,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320904833] [2023-12-21 04:27:51,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:27:51,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:27:51,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:27:51,446 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:27:51,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 04:27:51,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 04:27:51,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:27:51,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 04:27:51,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:27:52,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 04:27:52,192 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 04:27:52,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 04:27:52,195 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-21 04:27:52,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 04:27:52,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 04:27:52,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 04:27:52,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 282 treesize of output 141 [2023-12-21 04:27:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 04:27:52,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 04:27:52,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320904833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:27:52,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 04:27:52,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 15 [2023-12-21 04:27:52,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085272893] [2023-12-21 04:27:52,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:27:52,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 04:27:52,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:27:52,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 04:27:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-21 04:27:52,349 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:52,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:27:52,643 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2023-12-21 04:27:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 04:27:52,644 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-21 04:27:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:27:52,644 INFO L225 Difference]: With dead ends: 44 [2023-12-21 04:27:52,644 INFO L226 Difference]: Without dead ends: 25 [2023-12-21 04:27:52,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-12-21 04:27:52,646 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:27:52,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 36 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:27:52,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-21 04:27:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-12-21 04:27:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-12-21 04:27:52,649 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2023-12-21 04:27:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:27:52,649 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-12-21 04:27:52,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:52,650 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-12-21 04:27:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 04:27:52,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:27:52,650 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:27:52,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 04:27:52,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:27:52,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:27:52,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:27:52,858 INFO L85 PathProgramCache]: Analyzing trace with hash 483554996, now seen corresponding path program 1 times [2023-12-21 04:27:52,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:27:52,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016709910] [2023-12-21 04:27:52,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:27:52,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:27:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:27:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 04:27:52,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:27:52,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016709910] [2023-12-21 04:27:52,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016709910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:27:52,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:27:52,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 04:27:52,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935968341] [2023-12-21 04:27:52,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:27:52,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 04:27:52,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:27:52,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 04:27:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 04:27:52,952 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:52,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:27:52,997 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2023-12-21 04:27:52,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 04:27:52,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 04:27:52,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:27:52,998 INFO L225 Difference]: With dead ends: 29 [2023-12-21 04:27:52,998 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 04:27:52,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-21 04:27:53,000 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:27:53,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 60 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:27:53,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 04:27:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 04:27:53,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:53,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 04:27:53,001 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2023-12-21 04:27:53,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:27:53,001 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 04:27:53,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:27:53,002 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 04:27:53,002 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 04:27:53,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-21 04:27:53,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-12-21 04:27:53,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-12-21 04:27:53,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 04:27:53,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 04:27:53,031 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 97) no Hoare annotation was computed. [2023-12-21 04:27:53,032 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2023-12-21 04:27:53,032 INFO L899 garLoopResultBuilder]: For program point L89(lines 64 97) no Hoare annotation was computed. [2023-12-21 04:27:53,032 INFO L899 garLoopResultBuilder]: For program point L52(lines 50 143) no Hoare annotation was computed. [2023-12-21 04:27:53,032 INFO L899 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2023-12-21 04:27:53,032 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2023-12-21 04:27:53,032 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 143) no Hoare annotation was computed. [2023-12-21 04:27:53,032 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 14 172) no Hoare annotation was computed. [2023-12-21 04:27:53,032 INFO L899 garLoopResultBuilder]: For program point $Ultimate##32(lines 105 131) no Hoare annotation was computed. [2023-12-21 04:27:53,032 INFO L899 garLoopResultBuilder]: For program point $Ultimate##30(lines 102 136) no Hoare annotation was computed. [2023-12-21 04:27:53,032 INFO L899 garLoopResultBuilder]: For program point L69(lines 66 92) no Hoare annotation was computed. [2023-12-21 04:27:53,032 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 137) no Hoare annotation was computed. [2023-12-21 04:27:53,033 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 166) no Hoare annotation was computed. [2023-12-21 04:27:53,033 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2023-12-21 04:27:53,033 INFO L899 garLoopResultBuilder]: For program point L148(lines 33 156) no Hoare annotation was computed. [2023-12-21 04:27:53,033 INFO L895 garLoopResultBuilder]: At program point L20-3(lines 20 23) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0) (= (mod |ULTIMATE.start_main_~main__loop_entered~0#1| 4294967296) 0)) [2023-12-21 04:27:53,033 INFO L899 garLoopResultBuilder]: For program point L20-4(lines 20 23) no Hoare annotation was computed. [2023-12-21 04:27:53,033 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 92) no Hoare annotation was computed. [2023-12-21 04:27:53,033 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 156) no Hoare annotation was computed. [2023-12-21 04:27:53,033 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-21 04:27:53,033 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 171) no Hoare annotation was computed. [2023-12-21 04:27:53,033 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 142) no Hoare annotation was computed. [2023-12-21 04:27:53,033 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 124) no Hoare annotation was computed. [2023-12-21 04:27:53,034 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-12-21 04:27:53,034 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 84) no Hoare annotation was computed. [2023-12-21 04:27:53,034 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-21 04:27:53,034 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 151) no Hoare annotation was computed. [2023-12-21 04:27:53,034 INFO L899 garLoopResultBuilder]: For program point L129(lines 102 136) no Hoare annotation was computed. [2023-12-21 04:27:53,034 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 161) no Hoare annotation was computed. [2023-12-21 04:27:53,034 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 114) no Hoare annotation was computed. [2023-12-21 04:27:53,034 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 151) no Hoare annotation was computed. [2023-12-21 04:27:53,036 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-12-21 04:27:53,038 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 04:27:53,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:27:53 BoogieIcfgContainer [2023-12-21 04:27:53,048 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 04:27:53,048 INFO L158 Benchmark]: Toolchain (without parser) took 4072.11ms. Allocated memory was 276.8MB in the beginning and 332.4MB in the end (delta: 55.6MB). Free memory was 233.9MB in the beginning and 276.5MB in the end (delta: -42.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 04:27:53,048 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 230.7MB. Free memory is still 181.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 04:27:53,048 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.23ms. Allocated memory is still 276.8MB. Free memory was 233.5MB in the beginning and 221.0MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 04:27:53,049 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.68ms. Allocated memory is still 276.8MB. Free memory was 221.0MB in the beginning and 219.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 04:27:53,049 INFO L158 Benchmark]: Boogie Preprocessor took 31.10ms. Allocated memory is still 276.8MB. Free memory was 219.0MB in the beginning and 216.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 04:27:53,049 INFO L158 Benchmark]: RCFGBuilder took 307.77ms. Allocated memory is still 276.8MB. Free memory was 216.9MB in the beginning and 202.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-21 04:27:53,050 INFO L158 Benchmark]: TraceAbstraction took 3468.81ms. Allocated memory was 276.8MB in the beginning and 332.4MB in the end (delta: 55.6MB). Free memory was 201.6MB in the beginning and 276.5MB in the end (delta: -74.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 04:27:53,051 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 230.7MB. Free memory is still 181.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.23ms. Allocated memory is still 276.8MB. Free memory was 233.5MB in the beginning and 221.0MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.68ms. Allocated memory is still 276.8MB. Free memory was 221.0MB in the beginning and 219.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.10ms. Allocated memory is still 276.8MB. Free memory was 219.0MB in the beginning and 216.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 307.77ms. Allocated memory is still 276.8MB. Free memory was 216.9MB in the beginning and 202.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 3468.81ms. Allocated memory was 276.8MB in the beginning and 332.4MB in the end (delta: 55.6MB). Free memory was 201.6MB in the beginning and 276.5MB in the end (delta: -74.9MB). There was no memory consumed. 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 - PositiveResult [Line: 46]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 77]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 114]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 134 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 505 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 300 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 217 IncrementalHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 205 mSDtfsCounter, 217 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 33 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 5 NumberOfFragments, 9 HoareAnnotationTreeSize, 1 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FormulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 169 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 708 SizeOfPredicates, 12 NumberOfNonLiveVariables, 245 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 24/39 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((main__loop_entered % 4294967296) == 0) RESULT: Ultimate proved your program to be correct! [2023-12-21 04:27:53,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...