/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-39.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 00:45:12,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 00:45:12,190 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 00:45:12,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 00:45:12,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 00:45:12,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 00:45:12,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 00:45:12,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 00:45:12,229 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 00:45:12,229 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 00:45:12,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 00:45:12,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 00:45:12,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 00:45:12,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 00:45:12,230 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 00:45:12,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 00:45:12,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 00:45:12,231 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 00:45:12,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 00:45:12,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 00:45:12,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 00:45:12,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 00:45:12,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 00:45:12,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 00:45:12,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 00:45:12,239 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 00:45:12,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 00:45:12,239 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 00:45:12,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 00:45:12,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 00:45:12,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 00:45:12,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 00:45:12,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 00:45:12,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 00:45:12,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 00:45:12,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 00:45:12,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 00:45:12,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 00:45:12,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 00:45:12,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 00:45:12,241 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 00:45:12,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 00:45:12,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 00:45:12,242 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 00:45:12,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 00:45:12,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 00:45:12,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 00:45:12,462 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 00:45:12,463 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 00:45:12,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-39.i [2023-12-21 00:45:13,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 00:45:13,689 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 00:45:13,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-39.i [2023-12-21 00:45:13,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9db990e0d/c09ca431b9064b0b88cfc97ddb742ca9/FLAG71982ef84 [2023-12-21 00:45:13,739 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9db990e0d/c09ca431b9064b0b88cfc97ddb742ca9 [2023-12-21 00:45:13,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 00:45:13,743 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 00:45:13,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 00:45:13,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 00:45:13,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 00:45:13,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:45:13" (1/1) ... [2023-12-21 00:45:13,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3f5746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:13, skipping insertion in model container [2023-12-21 00:45:13,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:45:13" (1/1) ... [2023-12-21 00:45:13,802 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 00:45:13,904 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_operatoramount_amount500_file-39.i[916,929] [2023-12-21 00:45:14,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 00:45:14,076 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 00:45:14,086 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_operatoramount_amount500_file-39.i[916,929] [2023-12-21 00:45:14,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 00:45:14,165 INFO L206 MainTranslator]: Completed translation [2023-12-21 00:45:14,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14 WrapperNode [2023-12-21 00:45:14,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 00:45:14,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 00:45:14,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 00:45:14,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 00:45:14,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (1/1) ... [2023-12-21 00:45:14,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (1/1) ... [2023-12-21 00:45:14,257 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 716 [2023-12-21 00:45:14,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 00:45:14,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 00:45:14,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 00:45:14,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 00:45:14,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (1/1) ... [2023-12-21 00:45:14,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (1/1) ... [2023-12-21 00:45:14,279 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (1/1) ... [2023-12-21 00:45:14,332 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]. [2023-12-21 00:45:14,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (1/1) ... [2023-12-21 00:45:14,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (1/1) ... [2023-12-21 00:45:14,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (1/1) ... [2023-12-21 00:45:14,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (1/1) ... [2023-12-21 00:45:14,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (1/1) ... [2023-12-21 00:45:14,377 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (1/1) ... [2023-12-21 00:45:14,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 00:45:14,401 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 00:45:14,401 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 00:45:14,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 00:45:14,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (1/1) ... [2023-12-21 00:45:14,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 00:45:14,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:14,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 00:45:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 00:45:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 00:45:14,446 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 00:45:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 00:45:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 00:45:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 00:45:14,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 00:45:14,556 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 00:45:14,557 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 00:45:15,292 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 00:45:15,337 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 00:45:15,337 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 00:45:15,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:45:15 BoogieIcfgContainer [2023-12-21 00:45:15,338 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 00:45:15,339 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 00:45:15,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 00:45:15,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 00:45:15,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:45:13" (1/3) ... [2023-12-21 00:45:15,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ea6a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:45:15, skipping insertion in model container [2023-12-21 00:45:15,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:45:14" (2/3) ... [2023-12-21 00:45:15,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ea6a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:45:15, skipping insertion in model container [2023-12-21 00:45:15,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:45:15" (3/3) ... [2023-12-21 00:45:15,343 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-39.i [2023-12-21 00:45:15,354 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 00:45:15,354 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 00:45:15,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 00:45:15,388 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;@32655b2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 00:45:15,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 00:45:15,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 181 states have (on average 1.5524861878453038) internal successors, (281), 182 states have internal predecessors, (281), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 00:45:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-12-21 00:45:15,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:15,407 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:15,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:15,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:15,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1918986453, now seen corresponding path program 1 times [2023-12-21 00:45:15,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:15,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320038835] [2023-12-21 00:45:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:15,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:15,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978042867] [2023-12-21 00:45:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:15,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:15,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:15,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:45:15,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 00:45:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:15,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 00:45:15,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:45:16,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:45:16,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:16,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320038835] [2023-12-21 00:45:16,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:16,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978042867] [2023-12-21 00:45:16,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978042867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:45:16,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:45:16,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:45:16,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071366689] [2023-12-21 00:45:16,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:45:16,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:45:16,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:45:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:45:16,643 INFO L87 Difference]: Start difference. First operand has 246 states, 181 states have (on average 1.5524861878453038) internal successors, (281), 182 states have internal predecessors, (281), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:16,828 INFO L93 Difference]: Finished difference Result 525 states and 923 transitions. [2023-12-21 00:45:16,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 00:45:16,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 445 [2023-12-21 00:45:16,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:16,845 INFO L225 Difference]: With dead ends: 525 [2023-12-21 00:45:16,845 INFO L226 Difference]: Without dead ends: 280 [2023-12-21 00:45:16,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:45:16,855 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 75 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:16,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1201 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 00:45:16,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-21 00:45:16,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 246. [2023-12-21 00:45:16,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 182 states have (on average 1.5274725274725274) internal successors, (278), 182 states have internal predecessors, (278), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 00:45:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 402 transitions. [2023-12-21 00:45:16,923 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 402 transitions. Word has length 445 [2023-12-21 00:45:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:16,927 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 402 transitions. [2023-12-21 00:45:16,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 402 transitions. [2023-12-21 00:45:16,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-12-21 00:45:16,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:16,937 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:16,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:17,149 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 [2023-12-21 00:45:17,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:17,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:17,151 INFO L85 PathProgramCache]: Analyzing trace with hash -2117815405, now seen corresponding path program 1 times [2023-12-21 00:45:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:17,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294686821] [2023-12-21 00:45:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:17,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:17,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:17,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282303098] [2023-12-21 00:45:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:17,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:17,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:17,270 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:45:17,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 00:45:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:17,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 00:45:17,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:45:20,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:45:20,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:20,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294686821] [2023-12-21 00:45:20,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:20,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282303098] [2023-12-21 00:45:20,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282303098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:45:20,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:45:20,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:45:20,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097352173] [2023-12-21 00:45:20,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:45:20,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:45:20,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:20,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:45:20,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:45:20,711 INFO L87 Difference]: Start difference. First operand 246 states and 402 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:20,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:20,761 INFO L93 Difference]: Finished difference Result 499 states and 814 transitions. [2023-12-21 00:45:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 00:45:20,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 445 [2023-12-21 00:45:20,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:20,764 INFO L225 Difference]: With dead ends: 499 [2023-12-21 00:45:20,764 INFO L226 Difference]: Without dead ends: 254 [2023-12-21 00:45:20,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:45:20,766 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 12 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:20,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1179 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 00:45:20,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-21 00:45:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2023-12-21 00:45:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 184 states have (on average 1.5217391304347827) internal successors, (280), 184 states have internal predecessors, (280), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 00:45:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 404 transitions. [2023-12-21 00:45:20,778 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 404 transitions. Word has length 445 [2023-12-21 00:45:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:20,779 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 404 transitions. [2023-12-21 00:45:20,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 404 transitions. [2023-12-21 00:45:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-12-21 00:45:20,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:20,785 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:20,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:21,000 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 [2023-12-21 00:45:21,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:21,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:21,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2060557103, now seen corresponding path program 1 times [2023-12-21 00:45:21,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:21,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618784413] [2023-12-21 00:45:21,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:21,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:21,078 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:21,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1775231332] [2023-12-21 00:45:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:21,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:21,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:21,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:45:21,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 00:45:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:21,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 00:45:21,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:45:21,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:45:21,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:21,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618784413] [2023-12-21 00:45:21,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:21,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775231332] [2023-12-21 00:45:21,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775231332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:45:21,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:45:21,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:45:21,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904407486] [2023-12-21 00:45:21,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:45:21,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:45:21,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:21,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:45:21,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:45:21,408 INFO L87 Difference]: Start difference. First operand 248 states and 404 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:21,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:21,471 INFO L93 Difference]: Finished difference Result 499 states and 812 transitions. [2023-12-21 00:45:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 00:45:21,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 445 [2023-12-21 00:45:21,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:21,473 INFO L225 Difference]: With dead ends: 499 [2023-12-21 00:45:21,473 INFO L226 Difference]: Without dead ends: 252 [2023-12-21 00:45:21,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:45:21,476 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 3 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:21,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1180 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 00:45:21,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-21 00:45:21,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 250. [2023-12-21 00:45:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 186 states have (on average 1.5161290322580645) internal successors, (282), 186 states have internal predecessors, (282), 62 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 00:45:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 406 transitions. [2023-12-21 00:45:21,496 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 406 transitions. Word has length 445 [2023-12-21 00:45:21,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:21,499 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 406 transitions. [2023-12-21 00:45:21,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:21,499 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 406 transitions. [2023-12-21 00:45:21,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-12-21 00:45:21,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:21,504 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:21,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:21,718 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 [2023-12-21 00:45:21,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:21,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2060497521, now seen corresponding path program 1 times [2023-12-21 00:45:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:21,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258509600] [2023-12-21 00:45:21,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:21,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:21,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:21,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950716017] [2023-12-21 00:45:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:21,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:21,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:21,780 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) [2023-12-21 00:45:21,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 00:45:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:22,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 00:45:22,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:45:22,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:45:22,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:22,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258509600] [2023-12-21 00:45:22,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:22,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950716017] [2023-12-21 00:45:22,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950716017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:45:22,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:45:22,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 00:45:22,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850487295] [2023-12-21 00:45:22,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:45:22,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 00:45:22,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:22,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 00:45:22,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:45:22,121 INFO L87 Difference]: Start difference. First operand 250 states and 406 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:22,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:22,164 INFO L93 Difference]: Finished difference Result 745 states and 1210 transitions. [2023-12-21 00:45:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 00:45:22,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 445 [2023-12-21 00:45:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:22,168 INFO L225 Difference]: With dead ends: 745 [2023-12-21 00:45:22,168 INFO L226 Difference]: Without dead ends: 496 [2023-12-21 00:45:22,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:45:22,169 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 390 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:22,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 879 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 00:45:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-12-21 00:45:22,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 494. [2023-12-21 00:45:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 367 states have (on average 1.5068119891008174) internal successors, (553), 367 states have internal predecessors, (553), 124 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-21 00:45:22,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 801 transitions. [2023-12-21 00:45:22,198 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 801 transitions. Word has length 445 [2023-12-21 00:45:22,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:22,199 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 801 transitions. [2023-12-21 00:45:22,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:22,200 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 801 transitions. [2023-12-21 00:45:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-21 00:45:22,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:22,205 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:22,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:22,412 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 [2023-12-21 00:45:22,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:22,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash 82220671, now seen corresponding path program 1 times [2023-12-21 00:45:22,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:22,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570258848] [2023-12-21 00:45:22,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:22,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:22,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:22,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586831464] [2023-12-21 00:45:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:22,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:22,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:22,481 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) [2023-12-21 00:45:22,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 00:45:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:22,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 00:45:22,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:45:22,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:45:22,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:22,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570258848] [2023-12-21 00:45:22,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:22,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586831464] [2023-12-21 00:45:22,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586831464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:45:22,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:45:22,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 00:45:22,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485908946] [2023-12-21 00:45:22,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:45:22,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 00:45:22,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:22,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 00:45:22,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:45:22,807 INFO L87 Difference]: Start difference. First operand 494 states and 801 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:22,864 INFO L93 Difference]: Finished difference Result 1480 states and 2401 transitions. [2023-12-21 00:45:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 00:45:22,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 446 [2023-12-21 00:45:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:22,869 INFO L225 Difference]: With dead ends: 1480 [2023-12-21 00:45:22,869 INFO L226 Difference]: Without dead ends: 987 [2023-12-21 00:45:22,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:45:22,871 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 395 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:22,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 784 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 00:45:22,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2023-12-21 00:45:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 985. [2023-12-21 00:45:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 732 states have (on average 1.5027322404371584) internal successors, (1100), 732 states have internal predecessors, (1100), 248 states have call successors, (248), 4 states have call predecessors, (248), 4 states have return successors, (248), 248 states have call predecessors, (248), 248 states have call successors, (248) [2023-12-21 00:45:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1596 transitions. [2023-12-21 00:45:22,950 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1596 transitions. Word has length 446 [2023-12-21 00:45:22,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:22,950 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1596 transitions. [2023-12-21 00:45:22,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:22,951 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1596 transitions. [2023-12-21 00:45:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-21 00:45:22,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:22,954 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:22,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:23,161 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 [2023-12-21 00:45:23,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:23,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:23,162 INFO L85 PathProgramCache]: Analyzing trace with hash 222769281, now seen corresponding path program 1 times [2023-12-21 00:45:23,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:23,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326625009] [2023-12-21 00:45:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:23,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:23,205 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:23,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940685449] [2023-12-21 00:45:23,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:23,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:23,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:23,207 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) [2023-12-21 00:45:23,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 00:45:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:23,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 00:45:23,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:45:23,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:45:23,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:23,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326625009] [2023-12-21 00:45:23,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:23,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940685449] [2023-12-21 00:45:23,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940685449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:45:23,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:45:23,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 00:45:23,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064138760] [2023-12-21 00:45:23,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:45:23,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 00:45:23,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:23,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 00:45:23,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:45:23,831 INFO L87 Difference]: Start difference. First operand 985 states and 1596 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:23,910 INFO L93 Difference]: Finished difference Result 2941 states and 4766 transitions. [2023-12-21 00:45:23,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 00:45:23,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 446 [2023-12-21 00:45:23,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:23,920 INFO L225 Difference]: With dead ends: 2941 [2023-12-21 00:45:23,920 INFO L226 Difference]: Without dead ends: 1957 [2023-12-21 00:45:23,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 00:45:23,924 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 220 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:23,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 951 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 00:45:23,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2023-12-21 00:45:24,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1953. [2023-12-21 00:45:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1448 states have (on average 1.4986187845303867) internal successors, (2170), 1448 states have internal predecessors, (2170), 496 states have call successors, (496), 8 states have call predecessors, (496), 8 states have return successors, (496), 496 states have call predecessors, (496), 496 states have call successors, (496) [2023-12-21 00:45:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 3162 transitions. [2023-12-21 00:45:24,084 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 3162 transitions. Word has length 446 [2023-12-21 00:45:24,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:24,085 INFO L495 AbstractCegarLoop]: Abstraction has 1953 states and 3162 transitions. [2023-12-21 00:45:24,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:24,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 3162 transitions. [2023-12-21 00:45:24,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-21 00:45:24,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:24,088 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:24,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:24,292 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 [2023-12-21 00:45:24,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:24,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:24,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2120965068, now seen corresponding path program 1 times [2023-12-21 00:45:24,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:24,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059588579] [2023-12-21 00:45:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:24,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:24,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:24,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473327075] [2023-12-21 00:45:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:24,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:24,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:24,330 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) [2023-12-21 00:45:24,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 00:45:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:24,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 00:45:24,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:45:24,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:45:24,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:24,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059588579] [2023-12-21 00:45:24,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:24,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473327075] [2023-12-21 00:45:24,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473327075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:45:24,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:45:24,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 00:45:24,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838760629] [2023-12-21 00:45:24,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:45:24,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 00:45:24,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:24,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 00:45:24,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:45:24,711 INFO L87 Difference]: Start difference. First operand 1953 states and 3162 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:25,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:25,200 INFO L93 Difference]: Finished difference Result 4710 states and 7616 transitions. [2023-12-21 00:45:25,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 00:45:25,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 446 [2023-12-21 00:45:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:25,215 INFO L225 Difference]: With dead ends: 4710 [2023-12-21 00:45:25,216 INFO L226 Difference]: Without dead ends: 3726 [2023-12-21 00:45:25,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 00:45:25,221 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 1124 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:25,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 2342 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 00:45:25,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2023-12-21 00:45:25,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 3593. [2023-12-21 00:45:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 2731 states have (on average 1.5016477480776274) internal successors, (4101), 2736 states have internal predecessors, (4101), 844 states have call successors, (844), 17 states have call predecessors, (844), 17 states have return successors, (844), 839 states have call predecessors, (844), 844 states have call successors, (844) [2023-12-21 00:45:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 5789 transitions. [2023-12-21 00:45:25,437 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 5789 transitions. Word has length 446 [2023-12-21 00:45:25,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:25,437 INFO L495 AbstractCegarLoop]: Abstraction has 3593 states and 5789 transitions. [2023-12-21 00:45:25,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:25,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 5789 transitions. [2023-12-21 00:45:25,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-21 00:45:25,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:25,441 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:25,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:25,648 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 [2023-12-21 00:45:25,649 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:25,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:25,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1614791608, now seen corresponding path program 1 times [2023-12-21 00:45:25,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:25,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794527007] [2023-12-21 00:45:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:25,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:25,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:25,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750966346] [2023-12-21 00:45:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:25,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:25,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:25,691 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) [2023-12-21 00:45:25,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 00:45:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:26,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 00:45:26,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:45:26,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:45:26,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:26,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794527007] [2023-12-21 00:45:26,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:26,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750966346] [2023-12-21 00:45:26,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750966346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:45:26,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:45:26,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:45:26,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716055618] [2023-12-21 00:45:26,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:45:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:45:26,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:26,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:45:26,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:45:26,088 INFO L87 Difference]: Start difference. First operand 3593 states and 5789 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:26,479 INFO L93 Difference]: Finished difference Result 6194 states and 9966 transitions. [2023-12-21 00:45:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 00:45:26,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 446 [2023-12-21 00:45:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:26,492 INFO L225 Difference]: With dead ends: 6194 [2023-12-21 00:45:26,492 INFO L226 Difference]: Without dead ends: 3606 [2023-12-21 00:45:26,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:45:26,499 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 704 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:26,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1214 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 00:45:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2023-12-21 00:45:26,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 2589. [2023-12-21 00:45:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 2000 states have (on average 1.503) internal successors, (3006), 2004 states have internal predecessors, (3006), 576 states have call successors, (576), 12 states have call predecessors, (576), 12 states have return successors, (576), 572 states have call predecessors, (576), 576 states have call successors, (576) [2023-12-21 00:45:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 4158 transitions. [2023-12-21 00:45:26,656 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 4158 transitions. Word has length 446 [2023-12-21 00:45:26,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:26,657 INFO L495 AbstractCegarLoop]: Abstraction has 2589 states and 4158 transitions. [2023-12-21 00:45:26,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 4158 transitions. [2023-12-21 00:45:26,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2023-12-21 00:45:26,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:26,660 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:26,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:26,868 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 [2023-12-21 00:45:26,869 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:26,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:26,869 INFO L85 PathProgramCache]: Analyzing trace with hash 213694670, now seen corresponding path program 1 times [2023-12-21 00:45:26,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:26,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608627302] [2023-12-21 00:45:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:26,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:26,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:26,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169738287] [2023-12-21 00:45:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:26,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:26,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:26,915 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) [2023-12-21 00:45:26,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 00:45:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:27,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 00:45:27,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:45:27,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:45:27,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:27,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608627302] [2023-12-21 00:45:27,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:27,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169738287] [2023-12-21 00:45:27,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169738287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:45:27,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:45:27,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 00:45:27,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462934434] [2023-12-21 00:45:27,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:45:27,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 00:45:27,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:27,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 00:45:27,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 00:45:27,469 INFO L87 Difference]: Start difference. First operand 2589 states and 4158 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:28,274 INFO L93 Difference]: Finished difference Result 12323 states and 19582 transitions. [2023-12-21 00:45:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 00:45:28,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 447 [2023-12-21 00:45:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:28,305 INFO L225 Difference]: With dead ends: 12323 [2023-12-21 00:45:28,305 INFO L226 Difference]: Without dead ends: 9371 [2023-12-21 00:45:28,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-21 00:45:28,315 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 1584 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:28,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 2841 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 00:45:28,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9371 states. [2023-12-21 00:45:28,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9371 to 5475. [2023-12-21 00:45:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5475 states, 4694 states have (on average 1.5509160630592245) internal successors, (7280), 4708 states have internal predecessors, (7280), 756 states have call successors, (756), 24 states have call predecessors, (756), 24 states have return successors, (756), 742 states have call predecessors, (756), 756 states have call successors, (756) [2023-12-21 00:45:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 8792 transitions. [2023-12-21 00:45:28,560 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 8792 transitions. Word has length 447 [2023-12-21 00:45:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:28,560 INFO L495 AbstractCegarLoop]: Abstraction has 5475 states and 8792 transitions. [2023-12-21 00:45:28,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 8792 transitions. [2023-12-21 00:45:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2023-12-21 00:45:28,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:28,564 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:28,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-21 00:45:28,771 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 [2023-12-21 00:45:28,772 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:28,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash 240760272, now seen corresponding path program 1 times [2023-12-21 00:45:28,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:28,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391060756] [2023-12-21 00:45:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:28,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:28,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:28,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077016764] [2023-12-21 00:45:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:28,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:28,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:28,810 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) [2023-12-21 00:45:28,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 00:45:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:29,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 00:45:29,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3291 proven. 126 refuted. 0 times theorem prover too weak. 4147 trivial. 0 not checked. [2023-12-21 00:45:29,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:45:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 57 proven. 126 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2023-12-21 00:45:29,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:29,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391060756] [2023-12-21 00:45:29,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:29,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077016764] [2023-12-21 00:45:29,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077016764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:45:29,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:45:29,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 00:45:29,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262657003] [2023-12-21 00:45:29,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:45:29,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 00:45:29,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:29,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 00:45:29,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 00:45:29,661 INFO L87 Difference]: Start difference. First operand 5475 states and 8792 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-21 00:45:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:30,037 INFO L93 Difference]: Finished difference Result 8963 states and 14267 transitions. [2023-12-21 00:45:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 00:45:30,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) Word has length 447 [2023-12-21 00:45:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:30,062 INFO L225 Difference]: With dead ends: 8963 [2023-12-21 00:45:30,062 INFO L226 Difference]: Without dead ends: 3433 [2023-12-21 00:45:30,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 886 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 00:45:30,071 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 446 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:30,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 796 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 00:45:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2023-12-21 00:45:30,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 2759. [2023-12-21 00:45:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2238 states have (on average 1.4995531724754245) internal successors, (3356), 2238 states have internal predecessors, (3356), 496 states have call successors, (496), 24 states have call predecessors, (496), 24 states have return successors, (496), 496 states have call predecessors, (496), 496 states have call successors, (496) [2023-12-21 00:45:30,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 4348 transitions. [2023-12-21 00:45:30,186 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 4348 transitions. Word has length 447 [2023-12-21 00:45:30,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:30,186 INFO L495 AbstractCegarLoop]: Abstraction has 2759 states and 4348 transitions. [2023-12-21 00:45:30,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-21 00:45:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 4348 transitions. [2023-12-21 00:45:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-21 00:45:30,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:30,189 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:30,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:30,401 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 [2023-12-21 00:45:30,401 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:30,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:30,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1310964549, now seen corresponding path program 1 times [2023-12-21 00:45:30,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:30,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658675538] [2023-12-21 00:45:30,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:30,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:30,444 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:30,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221462163] [2023-12-21 00:45:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:30,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:30,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:30,446 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) [2023-12-21 00:45:30,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 00:45:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:30,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 00:45:30,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3463 proven. 120 refuted. 0 times theorem prover too weak. 3981 trivial. 0 not checked. [2023-12-21 00:45:31,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:45:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 63 proven. 120 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2023-12-21 00:45:31,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:31,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658675538] [2023-12-21 00:45:31,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:31,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221462163] [2023-12-21 00:45:31,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221462163] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:45:31,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:45:31,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-21 00:45:31,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151568967] [2023-12-21 00:45:31,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:45:31,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 00:45:31,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:31,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 00:45:31,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 00:45:31,321 INFO L87 Difference]: Start difference. First operand 2759 states and 4348 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-21 00:45:31,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:31,672 INFO L93 Difference]: Finished difference Result 4223 states and 6625 transitions. [2023-12-21 00:45:31,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 00:45:31,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 448 [2023-12-21 00:45:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:31,676 INFO L225 Difference]: With dead ends: 4223 [2023-12-21 00:45:31,676 INFO L226 Difference]: Without dead ends: 1437 [2023-12-21 00:45:31,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 888 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-21 00:45:31,682 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 681 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:31,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 807 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 00:45:31,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2023-12-21 00:45:31,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1295. [2023-12-21 00:45:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1030 states have (on average 1.4660194174757282) internal successors, (1510), 1030 states have internal predecessors, (1510), 248 states have call successors, (248), 16 states have call predecessors, (248), 16 states have return successors, (248), 248 states have call predecessors, (248), 248 states have call successors, (248) [2023-12-21 00:45:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 2006 transitions. [2023-12-21 00:45:31,764 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 2006 transitions. Word has length 448 [2023-12-21 00:45:31,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:31,764 INFO L495 AbstractCegarLoop]: Abstraction has 1295 states and 2006 transitions. [2023-12-21 00:45:31,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-21 00:45:31,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 2006 transitions. [2023-12-21 00:45:31,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-21 00:45:31,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:31,768 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:31,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:31,975 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 [2023-12-21 00:45:31,975 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:31,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:31,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2144969085, now seen corresponding path program 1 times [2023-12-21 00:45:31,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:31,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258637632] [2023-12-21 00:45:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:31,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:32,016 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:32,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931481496] [2023-12-21 00:45:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:32,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:32,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:32,033 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) [2023-12-21 00:45:32,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 00:45:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:32,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 00:45:32,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:45:32,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:45:32,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:32,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258637632] [2023-12-21 00:45:32,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:32,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931481496] [2023-12-21 00:45:32,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931481496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:45:32,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:45:32,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:45:32,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170931142] [2023-12-21 00:45:32,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:45:32,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:45:32,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:32,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:45:32,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:45:32,430 INFO L87 Difference]: Start difference. First operand 1295 states and 2006 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:32,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:32,568 INFO L93 Difference]: Finished difference Result 2589 states and 4011 transitions. [2023-12-21 00:45:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 00:45:32,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 448 [2023-12-21 00:45:32,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:32,571 INFO L225 Difference]: With dead ends: 2589 [2023-12-21 00:45:32,571 INFO L226 Difference]: Without dead ends: 1295 [2023-12-21 00:45:32,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:45:32,574 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 393 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:32,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 545 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 00:45:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2023-12-21 00:45:32,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1295. [2023-12-21 00:45:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1030 states have (on average 1.4543689320388349) internal successors, (1498), 1030 states have internal predecessors, (1498), 248 states have call successors, (248), 16 states have call predecessors, (248), 16 states have return successors, (248), 248 states have call predecessors, (248), 248 states have call successors, (248) [2023-12-21 00:45:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1994 transitions. [2023-12-21 00:45:32,646 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1994 transitions. Word has length 448 [2023-12-21 00:45:32,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:32,646 INFO L495 AbstractCegarLoop]: Abstraction has 1295 states and 1994 transitions. [2023-12-21 00:45:32,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:32,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1994 transitions. [2023-12-21 00:45:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-21 00:45:32,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:32,649 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:32,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:32,856 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 [2023-12-21 00:45:32,857 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:32,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash 933844485, now seen corresponding path program 1 times [2023-12-21 00:45:32,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:32,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828224735] [2023-12-21 00:45:32,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:32,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:32,899 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:32,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255352054] [2023-12-21 00:45:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:32,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:32,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:32,901 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) [2023-12-21 00:45:32,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 00:45:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:33,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 00:45:33,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:45:33,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:45:33,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:33,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828224735] [2023-12-21 00:45:33,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:33,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255352054] [2023-12-21 00:45:33,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255352054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:45:33,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:45:33,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 00:45:33,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616181503] [2023-12-21 00:45:33,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:45:33,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 00:45:33,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:33,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 00:45:33,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 00:45:33,857 INFO L87 Difference]: Start difference. First operand 1295 states and 1994 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:34,346 INFO L93 Difference]: Finished difference Result 5153 states and 7937 transitions. [2023-12-21 00:45:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 00:45:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 448 [2023-12-21 00:45:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:34,356 INFO L225 Difference]: With dead ends: 5153 [2023-12-21 00:45:34,356 INFO L226 Difference]: Without dead ends: 3859 [2023-12-21 00:45:34,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 00:45:34,360 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 766 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:34,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 1346 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 00:45:34,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2023-12-21 00:45:34,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 2859. [2023-12-21 00:45:34,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2330 states have (on average 1.455793991416309) internal successors, (3392), 2330 states have internal predecessors, (3392), 496 states have call successors, (496), 32 states have call predecessors, (496), 32 states have return successors, (496), 496 states have call predecessors, (496), 496 states have call successors, (496) [2023-12-21 00:45:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 4384 transitions. [2023-12-21 00:45:34,582 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 4384 transitions. Word has length 448 [2023-12-21 00:45:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:34,582 INFO L495 AbstractCegarLoop]: Abstraction has 2859 states and 4384 transitions. [2023-12-21 00:45:34,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 4384 transitions. [2023-12-21 00:45:34,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-21 00:45:34,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:34,585 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:34,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-21 00:45:34,793 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 [2023-12-21 00:45:34,794 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:34,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:34,794 INFO L85 PathProgramCache]: Analyzing trace with hash 879451587, now seen corresponding path program 1 times [2023-12-21 00:45:34,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:34,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39310965] [2023-12-21 00:45:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:34,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:34,831 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:34,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487686713] [2023-12-21 00:45:34,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:34,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:34,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:34,832 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:45:34,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 00:45:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:35,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 00:45:35,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:37,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3889 proven. 279 refuted. 0 times theorem prover too weak. 3396 trivial. 0 not checked. [2023-12-21 00:45:37,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:45:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 81 proven. 282 refuted. 0 times theorem prover too weak. 7201 trivial. 0 not checked. [2023-12-21 00:45:38,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:38,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39310965] [2023-12-21 00:45:38,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:38,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487686713] [2023-12-21 00:45:38,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487686713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:45:38,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:45:38,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 22 [2023-12-21 00:45:38,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692866427] [2023-12-21 00:45:38,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:45:38,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 00:45:38,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:38,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 00:45:38,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2023-12-21 00:45:38,687 INFO L87 Difference]: Start difference. First operand 2859 states and 4384 transitions. Second operand has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 22 states have internal predecessors, (255), 6 states have call successors, (124), 4 states have call predecessors, (124), 8 states have return successors, (124), 6 states have call predecessors, (124), 6 states have call successors, (124) [2023-12-21 00:45:41,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:41,972 INFO L93 Difference]: Finished difference Result 11284 states and 17262 transitions. [2023-12-21 00:45:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 00:45:41,973 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 22 states have internal predecessors, (255), 6 states have call successors, (124), 4 states have call predecessors, (124), 8 states have return successors, (124), 6 states have call predecessors, (124), 6 states have call successors, (124) Word has length 448 [2023-12-21 00:45:41,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:41,989 INFO L225 Difference]: With dead ends: 11284 [2023-12-21 00:45:41,989 INFO L226 Difference]: Without dead ends: 8418 [2023-12-21 00:45:41,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 919 GetRequests, 877 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 00:45:41,996 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 2857 mSDsluCounter, 5914 mSDsCounter, 0 mSdLazyCounter, 3762 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2879 SdHoareTripleChecker+Valid, 6574 SdHoareTripleChecker+Invalid, 4326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 3762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:41,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2879 Valid, 6574 Invalid, 4326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 3762 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 00:45:42,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8418 states. [2023-12-21 00:45:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8418 to 6152. [2023-12-21 00:45:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6152 states, 5026 states have (on average 1.4494627934739355) internal successors, (7285), 5026 states have internal predecessors, (7285), 1054 states have call successors, (1054), 71 states have call predecessors, (1054), 71 states have return successors, (1054), 1054 states have call predecessors, (1054), 1054 states have call successors, (1054) [2023-12-21 00:45:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 9393 transitions. [2023-12-21 00:45:42,493 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 9393 transitions. Word has length 448 [2023-12-21 00:45:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:42,494 INFO L495 AbstractCegarLoop]: Abstraction has 6152 states and 9393 transitions. [2023-12-21 00:45:42,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 22 states have internal predecessors, (255), 6 states have call successors, (124), 4 states have call predecessors, (124), 8 states have return successors, (124), 6 states have call predecessors, (124), 6 states have call successors, (124) [2023-12-21 00:45:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 9393 transitions. [2023-12-21 00:45:42,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-21 00:45:42,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:42,497 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:42,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-21 00:45:42,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:42,705 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:42,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:42,706 INFO L85 PathProgramCache]: Analyzing trace with hash 108718021, now seen corresponding path program 1 times [2023-12-21 00:45:42,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:42,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952608085] [2023-12-21 00:45:42,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:42,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:42,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:42,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340422871] [2023-12-21 00:45:42,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:42,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:42,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:42,742 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:45:42,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 00:45:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:43,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 00:45:43,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:43,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 4722 proven. 225 refuted. 0 times theorem prover too weak. 2617 trivial. 0 not checked. [2023-12-21 00:45:43,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:45:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 135 proven. 228 refuted. 0 times theorem prover too weak. 7201 trivial. 0 not checked. [2023-12-21 00:45:44,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:44,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952608085] [2023-12-21 00:45:44,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:44,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340422871] [2023-12-21 00:45:44,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340422871] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:45:44,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:45:44,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-21 00:45:44,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552218798] [2023-12-21 00:45:44,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:45:44,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 00:45:44,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:44,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 00:45:44,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-21 00:45:44,142 INFO L87 Difference]: Start difference. First operand 6152 states and 9393 transitions. Second operand has 16 states, 16 states have (on average 14.3125) internal successors, (229), 16 states have internal predecessors, (229), 7 states have call successors, (122), 4 states have call predecessors, (122), 8 states have return successors, (123), 7 states have call predecessors, (123), 7 states have call successors, (123) [2023-12-21 00:45:45,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:45,028 INFO L93 Difference]: Finished difference Result 12489 states and 18819 transitions. [2023-12-21 00:45:45,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 00:45:45,030 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.3125) internal successors, (229), 16 states have internal predecessors, (229), 7 states have call successors, (122), 4 states have call predecessors, (122), 8 states have return successors, (123), 7 states have call predecessors, (123), 7 states have call successors, (123) Word has length 448 [2023-12-21 00:45:45,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:45,044 INFO L225 Difference]: With dead ends: 12489 [2023-12-21 00:45:45,044 INFO L226 Difference]: Without dead ends: 6558 [2023-12-21 00:45:45,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=215, Invalid=435, Unknown=0, NotChecked=0, Total=650 [2023-12-21 00:45:45,057 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 822 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:45,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 958 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 00:45:45,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6558 states. [2023-12-21 00:45:45,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6558 to 6352. [2023-12-21 00:45:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6352 states, 5176 states have (on average 1.4217542503863987) internal successors, (7359), 5176 states have internal predecessors, (7359), 1054 states have call successors, (1054), 121 states have call predecessors, (1054), 121 states have return successors, (1054), 1054 states have call predecessors, (1054), 1054 states have call successors, (1054) [2023-12-21 00:45:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6352 states to 6352 states and 9467 transitions. [2023-12-21 00:45:45,385 INFO L78 Accepts]: Start accepts. Automaton has 6352 states and 9467 transitions. Word has length 448 [2023-12-21 00:45:45,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:45,385 INFO L495 AbstractCegarLoop]: Abstraction has 6352 states and 9467 transitions. [2023-12-21 00:45:45,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.3125) internal successors, (229), 16 states have internal predecessors, (229), 7 states have call successors, (122), 4 states have call predecessors, (122), 8 states have return successors, (123), 7 states have call predecessors, (123), 7 states have call successors, (123) [2023-12-21 00:45:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 6352 states and 9467 transitions. [2023-12-21 00:45:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-21 00:45:45,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:45,388 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:45,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:45,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 00:45:45,597 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:45,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:45,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2017175811, now seen corresponding path program 1 times [2023-12-21 00:45:45,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:45,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734250879] [2023-12-21 00:45:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:45,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:45,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:45,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132045856] [2023-12-21 00:45:45,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:45,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:45,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:45,634 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:45:45,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 00:45:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:46,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 00:45:46,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:45:46,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:45:46,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:46,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734250879] [2023-12-21 00:45:46,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:46,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132045856] [2023-12-21 00:45:46,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132045856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:45:46,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:45:46,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 00:45:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035545427] [2023-12-21 00:45:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:45:46,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 00:45:46,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 00:45:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:45:46,748 INFO L87 Difference]: Start difference. First operand 6352 states and 9467 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:47,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:47,343 INFO L93 Difference]: Finished difference Result 13048 states and 19469 transitions. [2023-12-21 00:45:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 00:45:47,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 448 [2023-12-21 00:45:47,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:47,356 INFO L225 Difference]: With dead ends: 13048 [2023-12-21 00:45:47,356 INFO L226 Difference]: Without dead ends: 6873 [2023-12-21 00:45:47,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 00:45:47,366 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 451 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:47,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1378 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 00:45:47,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6873 states. [2023-12-21 00:45:47,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6873 to 6358. [2023-12-21 00:45:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 5182 states have (on average 1.4208799691238905) internal successors, (7363), 5182 states have internal predecessors, (7363), 1054 states have call successors, (1054), 121 states have call predecessors, (1054), 121 states have return successors, (1054), 1054 states have call predecessors, (1054), 1054 states have call successors, (1054) [2023-12-21 00:45:47,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 9471 transitions. [2023-12-21 00:45:47,687 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 9471 transitions. Word has length 448 [2023-12-21 00:45:47,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:47,687 INFO L495 AbstractCegarLoop]: Abstraction has 6358 states and 9471 transitions. [2023-12-21 00:45:47,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:45:47,687 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 9471 transitions. [2023-12-21 00:45:47,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-21 00:45:47,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:47,692 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:47,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-21 00:45:47,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 00:45:47,901 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:47,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:47,901 INFO L85 PathProgramCache]: Analyzing trace with hash -401308667, now seen corresponding path program 1 times [2023-12-21 00:45:47,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:47,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17000776] [2023-12-21 00:45:47,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:47,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:47,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:47,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336550362] [2023-12-21 00:45:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:47,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:47,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:47,935 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:45:47,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 00:45:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:48,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 00:45:48,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 1393 proven. 165 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2023-12-21 00:45:49,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:45:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 18 proven. 165 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2023-12-21 00:45:49,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17000776] [2023-12-21 00:45:49,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336550362] [2023-12-21 00:45:49,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336550362] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:45:49,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:45:49,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2023-12-21 00:45:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727836702] [2023-12-21 00:45:49,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:45:49,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 00:45:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 00:45:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-21 00:45:49,568 INFO L87 Difference]: Start difference. First operand 6358 states and 9471 transitions. Second operand has 12 states, 12 states have (on average 16.833333333333332) internal successors, (202), 12 states have internal predecessors, (202), 4 states have call successors, (124), 3 states have call predecessors, (124), 5 states have return successors, (124), 4 states have call predecessors, (124), 4 states have call successors, (124) [2023-12-21 00:45:50,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:50,516 INFO L93 Difference]: Finished difference Result 11388 states and 16917 transitions. [2023-12-21 00:45:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 00:45:50,520 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.833333333333332) internal successors, (202), 12 states have internal predecessors, (202), 4 states have call successors, (124), 3 states have call predecessors, (124), 5 states have return successors, (124), 4 states have call predecessors, (124), 4 states have call successors, (124) Word has length 448 [2023-12-21 00:45:50,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:50,530 INFO L225 Difference]: With dead ends: 11388 [2023-12-21 00:45:50,530 INFO L226 Difference]: Without dead ends: 5194 [2023-12-21 00:45:50,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 885 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-12-21 00:45:50,539 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1931 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:50,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1931 Valid, 1612 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 00:45:50,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2023-12-21 00:45:50,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 5150. [2023-12-21 00:45:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5150 states, 4195 states have (on average 1.4143027413587603) internal successors, (5933), 4201 states have internal predecessors, (5933), 842 states have call successors, (842), 112 states have call predecessors, (842), 112 states have return successors, (842), 836 states have call predecessors, (842), 842 states have call successors, (842) [2023-12-21 00:45:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5150 states to 5150 states and 7617 transitions. [2023-12-21 00:45:50,826 INFO L78 Accepts]: Start accepts. Automaton has 5150 states and 7617 transitions. Word has length 448 [2023-12-21 00:45:50,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:50,827 INFO L495 AbstractCegarLoop]: Abstraction has 5150 states and 7617 transitions. [2023-12-21 00:45:50,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.833333333333332) internal successors, (202), 12 states have internal predecessors, (202), 4 states have call successors, (124), 3 states have call predecessors, (124), 5 states have return successors, (124), 4 states have call predecessors, (124), 4 states have call successors, (124) [2023-12-21 00:45:50,827 INFO L276 IsEmpty]: Start isEmpty. Operand 5150 states and 7617 transitions. [2023-12-21 00:45:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-21 00:45:50,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:50,830 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:50,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:51,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 00:45:51,040 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:51,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:51,041 INFO L85 PathProgramCache]: Analyzing trace with hash 239073539, now seen corresponding path program 1 times [2023-12-21 00:45:51,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:51,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378042806] [2023-12-21 00:45:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:51,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:51,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:51,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619623353] [2023-12-21 00:45:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:51,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:51,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:51,178 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:45:51,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 00:45:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:45:51,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 00:45:51,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:45:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3049 proven. 90 refuted. 0 times theorem prover too weak. 4425 trivial. 0 not checked. [2023-12-21 00:45:52,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:45:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 270 proven. 93 refuted. 0 times theorem prover too weak. 7201 trivial. 0 not checked. [2023-12-21 00:45:52,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:45:52,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378042806] [2023-12-21 00:45:52,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:45:52,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619623353] [2023-12-21 00:45:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619623353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 00:45:52,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 00:45:52,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-12-21 00:45:52,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127959331] [2023-12-21 00:45:52,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 00:45:52,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 00:45:52,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:45:52,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 00:45:52,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-12-21 00:45:52,881 INFO L87 Difference]: Start difference. First operand 5150 states and 7617 transitions. Second operand has 20 states, 19 states have (on average 13.894736842105264) internal successors, (264), 18 states have internal predecessors, (264), 6 states have call successors, (124), 4 states have call predecessors, (124), 7 states have return successors, (124), 6 states have call predecessors, (124), 6 states have call successors, (124) [2023-12-21 00:45:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:45:58,324 INFO L93 Difference]: Finished difference Result 33061 states and 48657 transitions. [2023-12-21 00:45:58,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-21 00:45:58,325 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 13.894736842105264) internal successors, (264), 18 states have internal predecessors, (264), 6 states have call successors, (124), 4 states have call predecessors, (124), 7 states have return successors, (124), 6 states have call predecessors, (124), 6 states have call successors, (124) Word has length 448 [2023-12-21 00:45:58,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:45:58,390 INFO L225 Difference]: With dead ends: 33061 [2023-12-21 00:45:58,390 INFO L226 Difference]: Without dead ends: 28356 [2023-12-21 00:45:58,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 944 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1019, Invalid=2887, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 00:45:58,407 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 2131 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 3596 mSolverCounterSat, 740 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 5891 SdHoareTripleChecker+Invalid, 4336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 740 IncrementalHoareTripleChecker+Valid, 3596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 00:45:58,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2223 Valid, 5891 Invalid, 4336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [740 Valid, 3596 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 00:45:58,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28356 states. [2023-12-21 00:45:59,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28356 to 10231. [2023-12-21 00:45:59,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10231 states, 8410 states have (on average 1.4217598097502973) internal successors, (11957), 8416 states have internal predecessors, (11957), 1586 states have call successors, (1586), 234 states have call predecessors, (1586), 234 states have return successors, (1586), 1580 states have call predecessors, (1586), 1586 states have call successors, (1586) [2023-12-21 00:45:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10231 states to 10231 states and 15129 transitions. [2023-12-21 00:45:59,545 INFO L78 Accepts]: Start accepts. Automaton has 10231 states and 15129 transitions. Word has length 448 [2023-12-21 00:45:59,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:45:59,546 INFO L495 AbstractCegarLoop]: Abstraction has 10231 states and 15129 transitions. [2023-12-21 00:45:59,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 13.894736842105264) internal successors, (264), 18 states have internal predecessors, (264), 6 states have call successors, (124), 4 states have call predecessors, (124), 7 states have return successors, (124), 6 states have call predecessors, (124), 6 states have call successors, (124) [2023-12-21 00:45:59,546 INFO L276 IsEmpty]: Start isEmpty. Operand 10231 states and 15129 transitions. [2023-12-21 00:45:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-21 00:45:59,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:45:59,549 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:45:59,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 00:45:59,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 00:45:59,758 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:45:59,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:45:59,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1015752885, now seen corresponding path program 1 times [2023-12-21 00:45:59,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:45:59,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759396725] [2023-12-21 00:45:59,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:59,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:45:59,793 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:45:59,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51515174] [2023-12-21 00:45:59,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:45:59,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:45:59,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:45:59,795 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:45:59,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 00:46:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:46:00,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 00:46:00,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:46:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2023-12-21 00:46:01,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 00:46:01,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 00:46:01,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759396725] [2023-12-21 00:46:01,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 00:46:01,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51515174] [2023-12-21 00:46:01,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51515174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 00:46:01,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 00:46:01,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 00:46:01,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865109884] [2023-12-21 00:46:01,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 00:46:01,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 00:46:01,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 00:46:01,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 00:46:01,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 00:46:01,108 INFO L87 Difference]: Start difference. First operand 10231 states and 15129 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:46:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 00:46:02,008 INFO L93 Difference]: Finished difference Result 20288 states and 30018 transitions. [2023-12-21 00:46:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 00:46:02,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) Word has length 448 [2023-12-21 00:46:02,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 00:46:02,029 INFO L225 Difference]: With dead ends: 20288 [2023-12-21 00:46:02,029 INFO L226 Difference]: Without dead ends: 10233 [2023-12-21 00:46:02,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 00:46:02,042 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 298 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 00:46:02,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1124 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 00:46:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10233 states. [2023-12-21 00:46:02,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10233 to 10231. [2023-12-21 00:46:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10231 states, 8410 states have (on average 1.4214030915576694) internal successors, (11954), 8416 states have internal predecessors, (11954), 1586 states have call successors, (1586), 234 states have call predecessors, (1586), 234 states have return successors, (1586), 1580 states have call predecessors, (1586), 1586 states have call successors, (1586) [2023-12-21 00:46:02,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10231 states to 10231 states and 15126 transitions. [2023-12-21 00:46:02,905 INFO L78 Accepts]: Start accepts. Automaton has 10231 states and 15126 transitions. Word has length 448 [2023-12-21 00:46:02,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 00:46:02,906 INFO L495 AbstractCegarLoop]: Abstraction has 10231 states and 15126 transitions. [2023-12-21 00:46:02,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (62), 1 states have call predecessors, (62), 1 states have return successors, (62), 1 states have call predecessors, (62), 1 states have call successors, (62) [2023-12-21 00:46:02,906 INFO L276 IsEmpty]: Start isEmpty. Operand 10231 states and 15126 transitions. [2023-12-21 00:46:02,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-12-21 00:46:02,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 00:46:02,909 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:46:02,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 00:46:03,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:46:03,117 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 00:46:03,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 00:46:03,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1786486451, now seen corresponding path program 1 times [2023-12-21 00:46:03,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 00:46:03,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651153645] [2023-12-21 00:46:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:46:03,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 00:46:03,152 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 00:46:03,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250123898] [2023-12-21 00:46:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 00:46:03,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:46:03,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 00:46:03,154 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 00:46:03,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 00:46:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 00:46:04,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 00:46:04,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 00:46:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 5035 proven. 789 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-12-21 00:46:09,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 00:46:48,719 WARN L293 SmtUtils]: Spent 21.78s on a formula simplification. DAG size of input: 43 DAG size of output: 38 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-12-21 00:46:59,112 WARN L293 SmtUtils]: Spent 10.39s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-12-21 00:48:22,405 WARN L293 SmtUtils]: Spent 31.32s on a formula simplification. DAG size of input: 110 DAG size of output: 109 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 00:48:45,276 WARN L293 SmtUtils]: Spent 7.83s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:48:53,304 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:49:11,433 WARN L293 SmtUtils]: Spent 6.83s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:49:20,826 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:49:31,578 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:49:39,676 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:49:51,261 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:49:56,984 WARN L293 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:50:01,027 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse13 (* 65535 c_~var_1_62~0))) (let ((.cse14 (* 4294967295 c_~var_1_12~0)) (.cse6 (mod c_~var_1_35~0 256)) (.cse0 (mod c_~var_1_4~0 65536)) (.cse5 (mod (+ .cse13 c_~var_1_12~0) 65536))) (let ((.cse2 (mod c_~var_1_46~0 65536)) (.cse8 (* .cse5 4294967295)) (.cse1 (* 4294967295 .cse0)) (.cse3 (= (mod (+ .cse14 .cse6 .cse0) 4294967296) 0)) (.cse4 (= (mod (+ .cse14 (* 2 .cse0)) 4294967296) 0))) (or (< c_~var_1_12~0 11) (< .cse0 9) (< (mod (+ (mod c_~var_1_5~0 65536) .cse1) 4294967296) (+ (mod (+ c_~var_1_12~0 .cse1) 4294967296) 1)) (and (or (< .cse2 16383) (not (= |c_assume_abort_if_not_#in~cond| 1))) (or (< 16382 .cse2) (not (= |c_assume_abort_if_not_#in~cond| 0)))) (and (or .cse3 .cse4) (<= 32769 .cse5) (<= .cse5 (+ .cse6 49153))) (and (or (and (<= .cse5 (+ .cse0 49153)) (<= (+ .cse6 32770) .cse5)) (< (+ 16382 .cse5) .cse0)) .cse4) (< 32767 .cse2) (let ((.cse7 (* 4294967295 (mod (+ 65536 c_~var_1_12~0 .cse8 .cse1) 4294967296)))) (and (<= .cse7 (+ 18446744069414567937 (* 65536 (div (+ (- 18446744069414551553) .cse7) 65536)))) (<= (+ .cse6 .cse7) (+ 18446744069414518783 .cse5 (* (div (+ .cse7 (- 18446744069414518785)) 4294967296) 4294967296))))) (let ((.cse9 (* 4294967295 (mod (+ c_~var_1_12~0 .cse8 .cse1) 4294967296)))) (and (<= (+ .cse9 .cse0) (+ (* 4294967296 (div (+ (* (- 1) .cse5) .cse9 (- 18446744069414518785)) 4294967296)) .cse5 18446744069414584319)) (<= .cse9 (+ 18446744069414567937 (* 65536 (div (+ (- 18446744069414551553) .cse9) 65536)))))) (let ((.cse11 (+ .cse0 1)) (.cse12 (not .cse4)) (.cse10 (mod (+ c_~var_1_46~0 .cse13 c_~var_1_12~0) 65536))) (and (or (and (or (not (= (mod (+ (* 4294967295 .cse10) c_~var_1_12~0 .cse1) 4294967296) 0)) (< .cse10 .cse11)) (or .cse12 (< .cse0 .cse10))) (< .cse10 (+ .cse6 1))) (or (and (or (< .cse6 .cse11) (not .cse3)) (or .cse12 (< .cse0 .cse6))) (< .cse6 .cse10)))))))) is different from true [2023-12-21 00:50:22,693 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:51:04,016 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:52:28,779 WARN L293 SmtUtils]: Spent 39.29s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 00:52:45,855 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:53:08,174 WARN L293 SmtUtils]: Spent 5.43s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:53:17,985 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:53:26,050 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:54:29,725 WARN L293 SmtUtils]: Spent 35.22s on a formula simplification. DAG size of input: 122 DAG size of output: 111 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 00:54:46,676 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:54:57,396 WARN L293 SmtUtils]: Spent 6.77s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:57:41,540 WARN L293 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 4 DAG size of output: 1 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 00:58:43,353 WARN L293 SmtUtils]: Spent 35.20s on a formula simplification. DAG size of input: 107 DAG size of output: 104 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 00:59:35,759 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 00:59:35,766 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 00:59:36,573 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 00:59:36,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 00:59:36,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 00:59:36,774 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 449 with TraceHistMax 62,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 56 known predicates. [2023-12-21 00:59:36,778 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 00:59:36,779 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 00:59:36,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 12:59:36 BoogieIcfgContainer [2023-12-21 00:59:36,781 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 00:59:36,781 INFO L158 Benchmark]: Toolchain (without parser) took 863037.99ms. Allocated memory was 191.9MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 137.0MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-21 00:59:36,781 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 00:59:36,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.32ms. Allocated memory is still 191.9MB. Free memory was 136.6MB in the beginning and 99.6MB in the end (delta: 37.0MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-21 00:59:36,782 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.04ms. Allocated memory was 191.9MB in the beginning and 242.2MB in the end (delta: 50.3MB). Free memory was 99.6MB in the beginning and 191.0MB in the end (delta: -91.4MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2023-12-21 00:59:36,782 INFO L158 Benchmark]: Boogie Preprocessor took 141.79ms. Allocated memory is still 242.2MB. Free memory was 191.0MB in the beginning and 151.7MB in the end (delta: 39.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-21 00:59:36,782 INFO L158 Benchmark]: RCFGBuilder took 937.11ms. Allocated memory is still 242.2MB. Free memory was 151.7MB in the beginning and 175.8MB in the end (delta: -24.1MB). Peak memory consumption was 93.3MB. Max. memory is 8.0GB. [2023-12-21 00:59:36,782 INFO L158 Benchmark]: TraceAbstraction took 861441.44ms. Allocated memory was 242.2MB in the beginning and 3.1GB in the end (delta: 2.8GB). Free memory was 174.8MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-21 00:59:36,783 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 191.9MB. Free memory is still 141.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 421.32ms. Allocated memory is still 191.9MB. Free memory was 136.6MB in the beginning and 99.6MB in the end (delta: 37.0MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 91.04ms. Allocated memory was 191.9MB in the beginning and 242.2MB in the end (delta: 50.3MB). Free memory was 99.6MB in the beginning and 191.0MB in the end (delta: -91.4MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 141.79ms. Allocated memory is still 242.2MB. Free memory was 191.0MB in the beginning and 151.7MB in the end (delta: 39.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * RCFGBuilder took 937.11ms. Allocated memory is still 242.2MB. Free memory was 151.7MB in the beginning and 175.8MB in the end (delta: -24.1MB). Peak memory consumption was 93.3MB. Max. memory is 8.0GB. * TraceAbstraction took 861441.44ms. Allocated memory was 242.2MB in the beginning and 3.1GB in the end (delta: 2.8GB). Free memory was 174.8MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 1.0GB. 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 analyzing trace of length 449 with TraceHistMax 62,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 56 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 246 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 861.4s, OverallIterations: 20, TraceHistogramMax: 62, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15437 SdHoareTripleChecker+Valid, 9.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15283 mSDsluCounter, 33602 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24841 mSDsCounter, 2331 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11478 IncrementalHoareTripleChecker+Invalid, 13809 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2331 mSolverCounterUnsat, 8761 mSDtfsCounter, 11478 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11275 GetRequests, 11065 SyntacticMatches, 2 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1961 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10231occurred in iteration=18, InterpolantAutomatonStates: 199, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 28070 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 8490 NumberOfCodeBlocks, 8490 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 11152 ConstructedInterpolants, 0 QuantifiedInterpolants, 42081 SizeOfPredicates, 52 NumberOfNonLiveVariables, 22950 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 25 InterpolantComputations, 13 PerfectInterpolantSequences, 187081/189100 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