/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:59:30,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:59:30,933 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:59:30,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:59:30,939 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:59:30,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:59:30,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:59:30,962 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:59:30,963 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:59:30,963 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:59:30,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:59:30,964 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:59:30,964 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:59:30,965 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:59:30,965 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:59:30,965 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:59:30,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:59:30,966 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:59:30,966 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:59:30,966 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:59:30,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:59:30,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:59:30,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:59:30,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:59:30,969 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:59:30,969 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:59:30,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:59:30,969 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:59:30,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:59:30,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:59:30,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:59:30,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:59:30,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:59:30,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:59:30,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:59:30,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:59:30,971 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:59:30,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:59:30,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:59:30,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:59:30,972 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:59:30,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:59:30,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:59:30,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:59:31,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:59:31,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:59:31,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:59:31,173 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:59:31,174 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:59:31,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-5.i [2023-12-15 19:59:32,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:59:32,253 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:59:32,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-5.i [2023-12-15 19:59:32,261 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/398182acc/cb655411c4774c5f9661e9eb8fe02619/FLAG7725b91bd [2023-12-15 19:59:32,273 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/398182acc/cb655411c4774c5f9661e9eb8fe02619 [2023-12-15 19:59:32,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:59:32,276 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:59:32,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:59:32,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:59:32,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:59:32,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:32,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@731b6119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32, skipping insertion in model container [2023-12-15 19:59:32,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:32,318 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:59:32,419 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-5.i[915,928] [2023-12-15 19:59:32,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:59:32,634 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:59:32,649 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-5.i[915,928] [2023-12-15 19:59:32,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:59:32,771 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:59:32,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32 WrapperNode [2023-12-15 19:59:32,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:59:32,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:59:32,773 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:59:32,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:59:32,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:32,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:32,944 INFO L138 Inliner]: procedures = 26, calls = 98, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 772 [2023-12-15 19:59:32,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:59:32,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:59:32,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:59:32,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:59:32,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:32,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:32,982 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:33,043 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:59:33,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:33,044 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:33,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:33,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:33,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:33,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:33,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:59:33,140 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:59:33,140 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:59:33,140 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:59:33,140 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (1/1) ... [2023-12-15 19:59:33,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:59:33,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:33,194 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) [2023-12-15 19:59:33,196 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 [2023-12-15 19:59:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:59:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:59:33,227 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:59:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:59:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:59:33,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:59:33,332 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:59:33,334 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:59:34,084 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:59:34,138 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:59:34,138 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:59:34,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:59:34 BoogieIcfgContainer [2023-12-15 19:59:34,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:59:34,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:59:34,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:59:34,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:59:34,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:59:32" (1/3) ... [2023-12-15 19:59:34,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5267b9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:59:34, skipping insertion in model container [2023-12-15 19:59:34,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:59:32" (2/3) ... [2023-12-15 19:59:34,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5267b9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:59:34, skipping insertion in model container [2023-12-15 19:59:34,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:59:34" (3/3) ... [2023-12-15 19:59:34,144 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-5.i [2023-12-15 19:59:34,155 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:59:34,155 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:59:34,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:59:34,193 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;@9fdb9b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:59:34,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:59:34,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 202 states have (on average 1.688118811881188) internal successors, (341), 203 states have internal predecessors, (341), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-15 19:59:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2023-12-15 19:59:34,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:34,227 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:34,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:34,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:34,231 INFO L85 PathProgramCache]: Analyzing trace with hash 212676845, now seen corresponding path program 1 times [2023-12-15 19:59:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:34,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215567255] [2023-12-15 19:59:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:34,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:34,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215567255] [2023-12-15 19:59:34,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:59:34,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993645301] [2023-12-15 19:59:34,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:34,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:34,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:34,570 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) [2023-12-15 19:59:34,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:59:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:34,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:59:34,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2023-12-15 19:59:35,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:59:35,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993645301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:59:35,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:59:35,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:59:35,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926498910] [2023-12-15 19:59:35,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:59:35,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:59:35,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:35,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:59:35,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:59:35,080 INFO L87 Difference]: Start difference. First operand has 290 states, 202 states have (on average 1.688118811881188) internal successors, (341), 203 states have internal predecessors, (341), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-15 19:59:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:35,129 INFO L93 Difference]: Finished difference Result 577 states and 1105 transitions. [2023-12-15 19:59:35,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:59:35,132 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) Word has length 566 [2023-12-15 19:59:35,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:35,139 INFO L225 Difference]: With dead ends: 577 [2023-12-15 19:59:35,139 INFO L226 Difference]: Without dead ends: 288 [2023-12-15 19:59:35,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:59:35,149 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:35,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 500 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:59:35,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-15 19:59:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-12-15 19:59:35,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 201 states have (on average 1.6567164179104477) internal successors, (333), 201 states have internal predecessors, (333), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-15 19:59:35,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 503 transitions. [2023-12-15 19:59:35,208 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 503 transitions. Word has length 566 [2023-12-15 19:59:35,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:35,209 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 503 transitions. [2023-12-15 19:59:35,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-15 19:59:35,209 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 503 transitions. [2023-12-15 19:59:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-12-15 19:59:35,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:35,219 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:35,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 19:59:35,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:59:35,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:35,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash 121408348, now seen corresponding path program 1 times [2023-12-15 19:59:35,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:35,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817906858] [2023-12-15 19:59:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:35,569 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:59:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378705415] [2023-12-15 19:59:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:35,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:35,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:35,590 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) [2023-12-15 19:59:35,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:59:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:35,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 1339 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:59:35,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 5544 proven. 0 refuted. 0 times theorem prover too weak. 8736 trivial. 0 not checked. [2023-12-15 19:59:36,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:59:36,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:36,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817906858] [2023-12-15 19:59:36,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:36,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378705415] [2023-12-15 19:59:36,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378705415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:59:36,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:59:36,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:59:36,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176931372] [2023-12-15 19:59:36,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:59:36,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:59:36,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:36,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:59:36,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:59:36,129 INFO L87 Difference]: Start difference. First operand 288 states and 503 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-15 19:59:36,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:36,189 INFO L93 Difference]: Finished difference Result 575 states and 1005 transitions. [2023-12-15 19:59:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:59:36,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) Word has length 567 [2023-12-15 19:59:36,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:36,197 INFO L225 Difference]: With dead ends: 575 [2023-12-15 19:59:36,197 INFO L226 Difference]: Without dead ends: 288 [2023-12-15 19:59:36,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:59:36,200 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 397 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:36,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 485 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:59:36,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-15 19:59:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-12-15 19:59:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 201 states have (on average 1.6517412935323383) internal successors, (332), 201 states have internal predecessors, (332), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-15 19:59:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 502 transitions. [2023-12-15 19:59:36,236 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 502 transitions. Word has length 567 [2023-12-15 19:59:36,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:36,238 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 502 transitions. [2023-12-15 19:59:36,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-15 19:59:36,238 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 502 transitions. [2023-12-15 19:59:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-12-15 19:59:36,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:36,242 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:36,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:59:36,448 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,SelfDestructingSolverStorable1 [2023-12-15 19:59:36,448 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:36,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash -898299083, now seen corresponding path program 1 times [2023-12-15 19:59:36,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:36,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979500762] [2023-12-15 19:59:36,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:36,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:36,499 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:59:36,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450694998] [2023-12-15 19:59:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:36,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:36,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:36,502 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) [2023-12-15 19:59:36,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:59:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:36,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:59:36,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-15 19:59:36,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:59:36,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:36,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979500762] [2023-12-15 19:59:36,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:36,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450694998] [2023-12-15 19:59:36,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450694998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:59:36,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:59:36,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:59:36,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212497961] [2023-12-15 19:59:36,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:59:36,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:59:36,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:36,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:59:36,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:59:36,860 INFO L87 Difference]: Start difference. First operand 288 states and 502 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:36,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:36,905 INFO L93 Difference]: Finished difference Result 770 states and 1333 transitions. [2023-12-15 19:59:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:59:36,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 568 [2023-12-15 19:59:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:36,909 INFO L225 Difference]: With dead ends: 770 [2023-12-15 19:59:36,909 INFO L226 Difference]: Without dead ends: 483 [2023-12-15 19:59:36,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:59:36,910 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 296 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:36,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 972 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:59:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-12-15 19:59:36,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 480. [2023-12-15 19:59:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 327 states have (on average 1.6085626911314985) internal successors, (526), 328 states have internal predecessors, (526), 150 states have call successors, (150), 2 states have call predecessors, (150), 2 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2023-12-15 19:59:36,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 826 transitions. [2023-12-15 19:59:36,940 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 826 transitions. Word has length 568 [2023-12-15 19:59:36,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:36,941 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 826 transitions. [2023-12-15 19:59:36,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:36,941 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 826 transitions. [2023-12-15 19:59:36,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-12-15 19:59:36,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:36,945 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:36,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:59:37,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:37,152 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:37,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:37,152 INFO L85 PathProgramCache]: Analyzing trace with hash -475597257, now seen corresponding path program 1 times [2023-12-15 19:59:37,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:37,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170796698] [2023-12-15 19:59:37,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:37,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:37,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:59:37,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759681366] [2023-12-15 19:59:37,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:37,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:37,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:37,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:59:37,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:59:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:37,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:59:37,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-15 19:59:37,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:59:37,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:37,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170796698] [2023-12-15 19:59:37,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:37,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759681366] [2023-12-15 19:59:37,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759681366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:59:37,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:59:37,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:59:37,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198507139] [2023-12-15 19:59:37,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:59:37,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:59:37,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:59:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:59:37,543 INFO L87 Difference]: Start difference. First operand 480 states and 826 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:37,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:37,586 INFO L93 Difference]: Finished difference Result 1289 states and 2225 transitions. [2023-12-15 19:59:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:59:37,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 568 [2023-12-15 19:59:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:37,591 INFO L225 Difference]: With dead ends: 1289 [2023-12-15 19:59:37,592 INFO L226 Difference]: Without dead ends: 810 [2023-12-15 19:59:37,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:59:37,593 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 294 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:37,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1158 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:59:37,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2023-12-15 19:59:37,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 806. [2023-12-15 19:59:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 581 states have (on average 1.640275387263339) internal successors, (953), 584 states have internal predecessors, (953), 220 states have call successors, (220), 4 states have call predecessors, (220), 4 states have return successors, (220), 217 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-15 19:59:37,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1393 transitions. [2023-12-15 19:59:37,651 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1393 transitions. Word has length 568 [2023-12-15 19:59:37,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:37,652 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1393 transitions. [2023-12-15 19:59:37,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:37,653 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1393 transitions. [2023-12-15 19:59:37,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-12-15 19:59:37,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:37,656 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:37,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:59:37,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:37,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:37,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:37,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2130426297, now seen corresponding path program 1 times [2023-12-15 19:59:37,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:37,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153765573] [2023-12-15 19:59:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:37,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:37,905 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:59:37,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929456393] [2023-12-15 19:59:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:37,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:37,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:37,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:59:37,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:59:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:38,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:59:38,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-15 19:59:38,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:59:38,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:38,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153765573] [2023-12-15 19:59:38,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:38,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929456393] [2023-12-15 19:59:38,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929456393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:59:38,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:59:38,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:59:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377609442] [2023-12-15 19:59:38,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:59:38,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:59:38,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:38,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:59:38,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:59:38,209 INFO L87 Difference]: Start difference. First operand 806 states and 1393 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:38,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:38,262 INFO L93 Difference]: Finished difference Result 2396 states and 4137 transitions. [2023-12-15 19:59:38,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:59:38,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 568 [2023-12-15 19:59:38,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:38,270 INFO L225 Difference]: With dead ends: 2396 [2023-12-15 19:59:38,270 INFO L226 Difference]: Without dead ends: 1591 [2023-12-15 19:59:38,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:59:38,272 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 485 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:38,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 992 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:59:38,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2023-12-15 19:59:38,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 826. [2023-12-15 19:59:38,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 601 states have (on average 1.6256239600665559) internal successors, (977), 604 states have internal predecessors, (977), 220 states have call successors, (220), 4 states have call predecessors, (220), 4 states have return successors, (220), 217 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-15 19:59:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1417 transitions. [2023-12-15 19:59:38,324 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1417 transitions. Word has length 568 [2023-12-15 19:59:38,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:38,325 INFO L495 AbstractCegarLoop]: Abstraction has 826 states and 1417 transitions. [2023-12-15 19:59:38,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:38,325 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1417 transitions. [2023-12-15 19:59:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-12-15 19:59:38,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:38,329 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:38,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:59:38,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:38,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:38,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:38,550 INFO L85 PathProgramCache]: Analyzing trace with hash 136281591, now seen corresponding path program 1 times [2023-12-15 19:59:38,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:38,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086372135] [2023-12-15 19:59:38,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:38,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:38,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:59:38,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757865980] [2023-12-15 19:59:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:38,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:38,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:38,626 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:59:38,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:59:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:38,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 1339 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:59:38,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-15 19:59:38,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:59:38,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:38,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086372135] [2023-12-15 19:59:38,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:38,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757865980] [2023-12-15 19:59:38,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757865980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:59:38,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:59:38,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:59:38,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123548046] [2023-12-15 19:59:38,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:59:38,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:59:38,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:38,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:59:38,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:59:38,997 INFO L87 Difference]: Start difference. First operand 826 states and 1417 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:39,069 INFO L93 Difference]: Finished difference Result 2456 states and 4209 transitions. [2023-12-15 19:59:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:59:39,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 568 [2023-12-15 19:59:39,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:39,076 INFO L225 Difference]: With dead ends: 2456 [2023-12-15 19:59:39,076 INFO L226 Difference]: Without dead ends: 1631 [2023-12-15 19:59:39,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:59:39,080 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 476 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:39,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1145 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:59:39,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2023-12-15 19:59:39,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1150. [2023-12-15 19:59:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 925 states have (on average 1.6875675675675677) internal successors, (1561), 928 states have internal predecessors, (1561), 220 states have call successors, (220), 4 states have call predecessors, (220), 4 states have return successors, (220), 217 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-15 19:59:39,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 2001 transitions. [2023-12-15 19:59:39,143 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 2001 transitions. Word has length 568 [2023-12-15 19:59:39,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:39,144 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 2001 transitions. [2023-12-15 19:59:39,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 2001 transitions. [2023-12-15 19:59:39,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-12-15 19:59:39,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:39,149 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:39,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:59:39,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:39,356 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:39,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:39,357 INFO L85 PathProgramCache]: Analyzing trace with hash -874835659, now seen corresponding path program 1 times [2023-12-15 19:59:39,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:39,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521810079] [2023-12-15 19:59:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:39,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:39,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:59:39,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687457196] [2023-12-15 19:59:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:39,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:39,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:39,409 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:59:39,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:59:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:39,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:59:39,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-15 19:59:39,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:59:39,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:39,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521810079] [2023-12-15 19:59:39,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:39,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687457196] [2023-12-15 19:59:39,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687457196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:59:39,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:59:39,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:59:39,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532449093] [2023-12-15 19:59:39,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:59:39,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:59:39,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:39,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:59:39,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:59:39,915 INFO L87 Difference]: Start difference. First operand 1150 states and 2001 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:40,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:40,749 INFO L93 Difference]: Finished difference Result 4799 states and 8357 transitions. [2023-12-15 19:59:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:59:40,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 568 [2023-12-15 19:59:40,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:40,761 INFO L225 Difference]: With dead ends: 4799 [2023-12-15 19:59:40,762 INFO L226 Difference]: Without dead ends: 3650 [2023-12-15 19:59:40,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:59:40,764 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 1434 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:40,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 2016 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:59:40,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2023-12-15 19:59:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3413. [2023-12-15 19:59:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3413 states, 2736 states have (on average 1.6710526315789473) internal successors, (4572), 2746 states have internal predecessors, (4572), 660 states have call successors, (660), 16 states have call predecessors, (660), 16 states have return successors, (660), 650 states have call predecessors, (660), 660 states have call successors, (660) [2023-12-15 19:59:40,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 5892 transitions. [2023-12-15 19:59:40,958 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 5892 transitions. Word has length 568 [2023-12-15 19:59:40,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:40,958 INFO L495 AbstractCegarLoop]: Abstraction has 3413 states and 5892 transitions. [2023-12-15 19:59:40,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 5892 transitions. [2023-12-15 19:59:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-12-15 19:59:40,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:40,965 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:40,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:59:41,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:41,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:41,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:41,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1048392375, now seen corresponding path program 1 times [2023-12-15 19:59:41,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:41,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100512558] [2023-12-15 19:59:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:41,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:41,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:59:41,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190343625] [2023-12-15 19:59:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:41,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:41,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:41,208 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:59:41,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:59:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:41,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 19:59:41,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-15 19:59:42,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:59:42,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:42,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100512558] [2023-12-15 19:59:42,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:42,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190343625] [2023-12-15 19:59:42,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190343625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:59:42,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:59:42,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:59:42,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958735025] [2023-12-15 19:59:42,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:59:42,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:59:42,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:42,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:59:42,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:59:42,294 INFO L87 Difference]: Start difference. First operand 3413 states and 5892 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:43,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:43,981 INFO L93 Difference]: Finished difference Result 17103 states and 29211 transitions. [2023-12-15 19:59:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 19:59:43,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 568 [2023-12-15 19:59:43,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:44,033 INFO L225 Difference]: With dead ends: 17103 [2023-12-15 19:59:44,033 INFO L226 Difference]: Without dead ends: 13691 [2023-12-15 19:59:44,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:59:44,042 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 1331 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:44,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 2304 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:59:44,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13691 states. [2023-12-15 19:59:44,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13691 to 12071. [2023-12-15 19:59:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12071 states, 9676 states have (on average 1.6339396444811907) internal successors, (15810), 9720 states have internal predecessors, (15810), 2332 states have call successors, (2332), 62 states have call predecessors, (2332), 62 states have return successors, (2332), 2288 states have call predecessors, (2332), 2332 states have call successors, (2332) [2023-12-15 19:59:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12071 states to 12071 states and 20474 transitions. [2023-12-15 19:59:44,840 INFO L78 Accepts]: Start accepts. Automaton has 12071 states and 20474 transitions. Word has length 568 [2023-12-15 19:59:44,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:44,841 INFO L495 AbstractCegarLoop]: Abstraction has 12071 states and 20474 transitions. [2023-12-15 19:59:44,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 12071 states and 20474 transitions. [2023-12-15 19:59:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-12-15 19:59:44,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:44,900 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:44,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 19:59:45,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 19:59:45,101 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:45,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:45,102 INFO L85 PathProgramCache]: Analyzing trace with hash -539955527, now seen corresponding path program 1 times [2023-12-15 19:59:45,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:45,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000325445] [2023-12-15 19:59:45,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:45,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:45,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:59:45,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104298955] [2023-12-15 19:59:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:45,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:45,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:45,139 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:59:45,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:59:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:45,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:59:45,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 6984 proven. 102 refuted. 0 times theorem prover too weak. 7194 trivial. 0 not checked. [2023-12-15 19:59:45,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:59:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 150 proven. 102 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2023-12-15 19:59:46,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:46,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000325445] [2023-12-15 19:59:46,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:46,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104298955] [2023-12-15 19:59:46,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104298955] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:59:46,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:59:46,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:59:46,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885835048] [2023-12-15 19:59:46,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:59:46,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:59:46,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:46,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:59:46,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:59:46,109 INFO L87 Difference]: Start difference. First operand 12071 states and 20474 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-15 19:59:46,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:46,964 INFO L93 Difference]: Finished difference Result 23157 states and 39315 transitions. [2023-12-15 19:59:46,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:59:46,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) Word has length 568 [2023-12-15 19:59:46,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:47,001 INFO L225 Difference]: With dead ends: 23157 [2023-12-15 19:59:47,001 INFO L226 Difference]: Without dead ends: 10379 [2023-12-15 19:59:47,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1138 GetRequests, 1128 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:59:47,026 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 745 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:47,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1049 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:59:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10379 states. [2023-12-15 19:59:47,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10379 to 10299. [2023-12-15 19:59:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10299 states, 8412 states have (on average 1.6450309082263432) internal successors, (13838), 8444 states have internal predecessors, (13838), 1826 states have call successors, (1826), 60 states have call predecessors, (1826), 60 states have return successors, (1826), 1794 states have call predecessors, (1826), 1826 states have call successors, (1826) [2023-12-15 19:59:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10299 states to 10299 states and 17490 transitions. [2023-12-15 19:59:47,539 INFO L78 Accepts]: Start accepts. Automaton has 10299 states and 17490 transitions. Word has length 568 [2023-12-15 19:59:47,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:47,540 INFO L495 AbstractCegarLoop]: Abstraction has 10299 states and 17490 transitions. [2023-12-15 19:59:47,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-15 19:59:47,541 INFO L276 IsEmpty]: Start isEmpty. Operand 10299 states and 17490 transitions. [2023-12-15 19:59:47,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-12-15 19:59:47,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:47,550 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:47,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 19:59:47,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:47,757 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:47,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:47,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1367461833, now seen corresponding path program 1 times [2023-12-15 19:59:47,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:47,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703290605] [2023-12-15 19:59:47,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:47,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:47,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:59:47,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223246423] [2023-12-15 19:59:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:47,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:47,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:47,815 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:59:47,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:59:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:48,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:59:48,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 9547 proven. 90 refuted. 0 times theorem prover too weak. 4643 trivial. 0 not checked. [2023-12-15 19:59:48,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:59:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 162 proven. 90 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2023-12-15 19:59:49,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703290605] [2023-12-15 19:59:49,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223246423] [2023-12-15 19:59:49,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223246423] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:59:49,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:59:49,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-15 19:59:49,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478954207] [2023-12-15 19:59:49,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:59:49,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 19:59:49,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:49,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 19:59:49,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:59:49,180 INFO L87 Difference]: Start difference. First operand 10299 states and 17490 transitions. Second operand has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 4 states have call successors, (147), 3 states have call predecessors, (147), 5 states have return successors, (147), 4 states have call predecessors, (147), 4 states have call successors, (147) [2023-12-15 19:59:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:51,138 INFO L93 Difference]: Finished difference Result 33123 states and 55916 transitions. [2023-12-15 19:59:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 19:59:51,139 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 4 states have call successors, (147), 3 states have call predecessors, (147), 5 states have return successors, (147), 4 states have call predecessors, (147), 4 states have call successors, (147) Word has length 568 [2023-12-15 19:59:51,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:51,198 INFO L225 Difference]: With dead ends: 33123 [2023-12-15 19:59:51,198 INFO L226 Difference]: Without dead ends: 22825 [2023-12-15 19:59:51,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1148 GetRequests, 1126 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=330, Unknown=0, NotChecked=0, Total=506 [2023-12-15 19:59:51,225 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 942 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:51,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 2219 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 19:59:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22825 states. [2023-12-15 19:59:52,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22825 to 16583. [2023-12-15 19:59:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16583 states, 13190 states have (on average 1.623730098559515) internal successors, (21417), 13258 states have internal predecessors, (21417), 3284 states have call successors, (3284), 108 states have call predecessors, (3284), 108 states have return successors, (3284), 3216 states have call predecessors, (3284), 3284 states have call successors, (3284) [2023-12-15 19:59:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16583 states to 16583 states and 27985 transitions. [2023-12-15 19:59:52,160 INFO L78 Accepts]: Start accepts. Automaton has 16583 states and 27985 transitions. Word has length 568 [2023-12-15 19:59:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:52,160 INFO L495 AbstractCegarLoop]: Abstraction has 16583 states and 27985 transitions. [2023-12-15 19:59:52,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 4 states have call successors, (147), 3 states have call predecessors, (147), 5 states have return successors, (147), 4 states have call predecessors, (147), 4 states have call successors, (147) [2023-12-15 19:59:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand 16583 states and 27985 transitions. [2023-12-15 19:59:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-12-15 19:59:52,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:52,176 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:52,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-15 19:59:52,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:59:52,384 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:52,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1559146295, now seen corresponding path program 1 times [2023-12-15 19:59:52,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:52,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327092529] [2023-12-15 19:59:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:52,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:52,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:59:52,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622632809] [2023-12-15 19:59:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:52,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:52,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:52,421 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:59:52,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:59:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:52,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 19:59:52,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-15 19:59:53,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:59:53,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:53,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327092529] [2023-12-15 19:59:53,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622632809] [2023-12-15 19:59:53,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622632809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:59:53,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:59:53,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 19:59:53,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211302712] [2023-12-15 19:59:53,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:59:53,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 19:59:53,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:53,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 19:59:53,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:59:53,108 INFO L87 Difference]: Start difference. First operand 16583 states and 27985 transitions. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 19:59:57,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 20:00:01,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 20:00:05,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 20:00:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:00:14,121 INFO L93 Difference]: Finished difference Result 159951 states and 270415 transitions. [2023-12-15 20:00:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-15 20:00:14,122 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 568 [2023-12-15 20:00:14,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:00:14,536 INFO L225 Difference]: With dead ends: 159951 [2023-12-15 20:00:14,536 INFO L226 Difference]: Without dead ends: 143369 [2023-12-15 20:00:14,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=543, Invalid=1619, Unknown=0, NotChecked=0, Total=2162 [2023-12-15 20:00:14,615 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 4645 mSDsluCounter, 7531 mSDsCounter, 0 mSdLazyCounter, 3214 mSolverCounterSat, 464 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4645 SdHoareTripleChecker+Valid, 8417 SdHoareTripleChecker+Invalid, 3681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 3214 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:00:14,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4645 Valid, 8417 Invalid, 3681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 3214 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2023-12-15 20:00:14,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143369 states. [2023-12-15 20:00:17,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143369 to 48739. [2023-12-15 20:00:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48739 states, 42574 states have (on average 1.6847136750129186) internal successors, (71725), 42786 states have internal predecessors, (71725), 5876 states have call successors, (5876), 288 states have call predecessors, (5876), 288 states have return successors, (5876), 5664 states have call predecessors, (5876), 5876 states have call successors, (5876) [2023-12-15 20:00:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48739 states to 48739 states and 83477 transitions. [2023-12-15 20:00:18,231 INFO L78 Accepts]: Start accepts. Automaton has 48739 states and 83477 transitions. Word has length 568 [2023-12-15 20:00:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:00:18,232 INFO L495 AbstractCegarLoop]: Abstraction has 48739 states and 83477 transitions. [2023-12-15 20:00:18,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2023-12-15 20:00:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand 48739 states and 83477 transitions. [2023-12-15 20:00:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-12-15 20:00:18,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:00:18,280 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:00:18,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 20:00:18,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 20:00:18,489 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:00:18,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:00:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash 972870073, now seen corresponding path program 1 times [2023-12-15 20:00:18,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:00:18,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816555940] [2023-12-15 20:00:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:00:18,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:00:18,525 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:00:18,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048768831] [2023-12-15 20:00:18,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:00:18,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:00:18,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:00:18,526 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:00:18,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 20:00:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:00:18,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:00:18,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:00:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 5418 proven. 189 refuted. 0 times theorem prover too weak. 8673 trivial. 0 not checked. [2023-12-15 20:00:19,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:00:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 63 proven. 189 refuted. 0 times theorem prover too weak. 14028 trivial. 0 not checked. [2023-12-15 20:00:19,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:00:19,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816555940] [2023-12-15 20:00:19,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:00:19,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048768831] [2023-12-15 20:00:19,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048768831] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:00:19,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:00:19,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 20:00:19,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284406366] [2023-12-15 20:00:19,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:00:19,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:00:19,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:00:19,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:00:19,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:00:19,589 INFO L87 Difference]: Start difference. First operand 48739 states and 83477 transitions. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 3 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (149), 3 states have call predecessors, (149), 3 states have call successors, (149) [2023-12-15 20:00:22,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:00:22,532 INFO L93 Difference]: Finished difference Result 98673 states and 168473 transitions. [2023-12-15 20:00:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:00:22,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 3 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (149), 3 states have call predecessors, (149), 3 states have call successors, (149) Word has length 568 [2023-12-15 20:00:22,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:00:22,801 INFO L225 Difference]: With dead ends: 98673 [2023-12-15 20:00:22,802 INFO L226 Difference]: Without dead ends: 49935 [2023-12-15 20:00:22,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1138 GetRequests, 1126 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-15 20:00:22,851 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 495 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:00:22,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 1521 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:00:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49935 states. [2023-12-15 20:00:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49935 to 46039. [2023-12-15 20:00:25,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46039 states, 39802 states have (on average 1.6543138535751973) internal successors, (65845), 40014 states have internal predecessors, (65845), 5876 states have call successors, (5876), 360 states have call predecessors, (5876), 360 states have return successors, (5876), 5664 states have call predecessors, (5876), 5876 states have call successors, (5876) [2023-12-15 20:00:25,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46039 states to 46039 states and 77597 transitions. [2023-12-15 20:00:25,282 INFO L78 Accepts]: Start accepts. Automaton has 46039 states and 77597 transitions. Word has length 568 [2023-12-15 20:00:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:00:25,283 INFO L495 AbstractCegarLoop]: Abstraction has 46039 states and 77597 transitions. [2023-12-15 20:00:25,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 3 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (149), 3 states have call predecessors, (149), 3 states have call successors, (149) [2023-12-15 20:00:25,284 INFO L276 IsEmpty]: Start isEmpty. Operand 46039 states and 77597 transitions. [2023-12-15 20:00:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-12-15 20:00:25,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:00:25,318 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:00:25,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 20:00:25,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 20:00:25,527 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:00:25,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:00:25,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1036204664, now seen corresponding path program 1 times [2023-12-15 20:00:25,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:00:25,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337410091] [2023-12-15 20:00:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:00:25,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:00:25,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:00:25,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673805525] [2023-12-15 20:00:25,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:00:25,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:00:25,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:00:25,583 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:00:25,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 20:00:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:00:25,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 20:00:25,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:00:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2023-12-15 20:00:27,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:00:27,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:00:27,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337410091] [2023-12-15 20:00:27,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:00:27,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673805525] [2023-12-15 20:00:27,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673805525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:00:27,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:00:27,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:00:27,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668248201] [2023-12-15 20:00:27,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:00:27,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:00:27,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:00:27,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:00:27,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:00:27,115 INFO L87 Difference]: Start difference. First operand 46039 states and 77597 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Received shutdown request... [2023-12-15 20:00:32,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 20:00:32,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:00:32,969 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 1352 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 865 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 865 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:00:32,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 2608 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [865 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 20:00:32,970 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:00:32,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-15 20:00:33,010 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:00:33,011 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:00:33,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 20:00:33,178 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (46039states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (71824 states constructed, input type IntersectNwa). [2023-12-15 20:00:33,181 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:00:33,183 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:00:33,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:00:33 BoogieIcfgContainer [2023-12-15 20:00:33,189 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:00:33,189 INFO L158 Benchmark]: Toolchain (without parser) took 60912.91ms. Allocated memory was 180.4MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 117.5MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-15 20:00:33,190 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:00:33,190 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.35ms. Allocated memory was 180.4MB in the beginning and 217.1MB in the end (delta: 36.7MB). Free memory was 117.5MB in the beginning and 175.7MB in the end (delta: -58.2MB). Peak memory consumption was 35.4MB. Max. memory is 8.0GB. [2023-12-15 20:00:33,191 INFO L158 Benchmark]: Boogie Procedure Inliner took 172.43ms. Allocated memory is still 217.1MB. Free memory was 175.7MB in the beginning and 163.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 20:00:33,191 INFO L158 Benchmark]: Boogie Preprocessor took 193.21ms. Allocated memory is still 217.1MB. Free memory was 163.1MB in the beginning and 146.9MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 20:00:33,192 INFO L158 Benchmark]: RCFGBuilder took 999.45ms. Allocated memory is still 217.1MB. Free memory was 146.9MB in the beginning and 124.6MB in the end (delta: 22.3MB). Peak memory consumption was 48.5MB. Max. memory is 8.0GB. [2023-12-15 20:00:33,192 INFO L158 Benchmark]: TraceAbstraction took 59048.54ms. Allocated memory was 217.1MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 123.6MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-15 20:00:33,195 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 180.4MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 494.35ms. Allocated memory was 180.4MB in the beginning and 217.1MB in the end (delta: 36.7MB). Free memory was 117.5MB in the beginning and 175.7MB in the end (delta: -58.2MB). Peak memory consumption was 35.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 172.43ms. Allocated memory is still 217.1MB. Free memory was 175.7MB in the beginning and 163.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 193.21ms. Allocated memory is still 217.1MB. Free memory was 163.1MB in the beginning and 146.9MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * RCFGBuilder took 999.45ms. Allocated memory is still 217.1MB. Free memory was 146.9MB in the beginning and 124.6MB in the end (delta: 22.3MB). Peak memory consumption was 48.5MB. Max. memory is 8.0GB. * TraceAbstraction took 59048.54ms. Allocated memory was 217.1MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 123.6MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (46039states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (71824 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 290 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.0s, OverallIterations: 13, TraceHistogramMax: 85, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 36.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 13017 SdHoareTripleChecker+Valid, 20.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12892 mSDsluCounter, 25386 SdHoareTripleChecker+Invalid, 18.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17725 mSDsCounter, 3211 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8386 IncrementalHoareTripleChecker+Invalid, 11600 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3211 mSolverCounterUnsat, 7661 mSDtfsCounter, 8386 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9160 GetRequests, 9042 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48739occurred in iteration=11, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 107958 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 7948 NumberOfCodeBlocks, 7948 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 9070 ConstructedInterpolants, 0 QuantifiedInterpolants, 21029 SizeOfPredicates, 33 NumberOfNonLiveVariables, 17392 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 227718/228480 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown