/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-97.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:13:17,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:13:17,211 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:13:17,216 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:13:17,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:13:17,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:13:17,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:13:17,246 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:13:17,247 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:13:17,250 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:13:17,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:13:17,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:13:17,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:13:17,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:13:17,253 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:13:17,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:13:17,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:13:17,254 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:13:17,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:13:17,255 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:13:17,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:13:17,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:13:17,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:13:17,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:13:17,256 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:13:17,256 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:13:17,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:13:17,257 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:13:17,257 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:13:17,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:13:17,258 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:13:17,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:13:17,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:13:17,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:13:17,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:13:17,259 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:13:17,259 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:13:17,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:13:17,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:13:17,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:13:17,260 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:13:17,260 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:13:17,260 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:13:17,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:13:17,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:13:17,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:13:17,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:13:17,527 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:13:17,527 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:13:17,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-97.i [2023-12-16 04:13:18,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:13:19,142 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:13:19,142 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-97.i [2023-12-16 04:13:19,166 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffff9e55b/790b69188f224c709f87eb8ecb8ede98/FLAG8ae444f60 [2023-12-16 04:13:19,182 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffff9e55b/790b69188f224c709f87eb8ecb8ede98 [2023-12-16 04:13:19,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:13:19,186 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:13:19,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:13:19,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:13:19,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:13:19,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:19,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1152b6e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19, skipping insertion in model container [2023-12-16 04:13:19,195 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:19,271 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:13:19,397 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-97.i[916,929] [2023-12-16 04:13:19,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:13:19,630 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:13:19,641 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-97.i[916,929] [2023-12-16 04:13:19,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:13:19,764 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:13:19,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19 WrapperNode [2023-12-16 04:13:19,765 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:13:19,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:13:19,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:13:19,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:13:19,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:19,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:19,911 INFO L138 Inliner]: procedures = 26, calls = 85, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 711 [2023-12-16 04:13:19,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:13:19,912 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:13:19,912 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:13:19,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:13:19,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:19,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:19,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:19,988 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]. [2023-12-16 04:13:19,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:19,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:20,027 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:20,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:20,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:20,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:20,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:13:20,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:13:20,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:13:20,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:13:20,076 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (1/1) ... [2023-12-16 04:13:20,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:13:20,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:20,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 04:13:20,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 04:13:20,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:13:20,143 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:13:20,143 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:13:20,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:13:20,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:13:20,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:13:20,312 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:13:20,315 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:13:21,546 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:13:21,603 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:13:21,604 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:13:21,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:13:21 BoogieIcfgContainer [2023-12-16 04:13:21,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:13:21,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:13:21,606 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:13:21,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:13:21,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:13:19" (1/3) ... [2023-12-16 04:13:21,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@870ec61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:13:21, skipping insertion in model container [2023-12-16 04:13:21,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:19" (2/3) ... [2023-12-16 04:13:21,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@870ec61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:13:21, skipping insertion in model container [2023-12-16 04:13:21,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:13:21" (3/3) ... [2023-12-16 04:13:21,612 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-97.i [2023-12-16 04:13:21,628 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:13:21,628 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:13:21,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:13:21,691 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;@715680cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:13:21,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:13:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 253 states, 178 states have (on average 1.5786516853932584) internal successors, (281), 179 states have internal predecessors, (281), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 04:13:21,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-16 04:13:21,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:21,727 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:21,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:21,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:21,732 INFO L85 PathProgramCache]: Analyzing trace with hash -532018163, now seen corresponding path program 1 times [2023-12-16 04:13:21,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:21,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735791016] [2023-12-16 04:13:21,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:21,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:22,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:22,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735791016] [2023-12-16 04:13:22,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 04:13:22,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804913760] [2023-12-16 04:13:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:22,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:22,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:22,119 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) [2023-12-16 04:13:22,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:13:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:22,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 04:13:22,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2023-12-16 04:13:22,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:22,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804913760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:22,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:22,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:13:22,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536193763] [2023-12-16 04:13:22,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:22,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:13:22,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:22,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:13:22,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:13:22,741 INFO L87 Difference]: Start difference. First operand has 253 states, 178 states have (on average 1.5786516853932584) internal successors, (281), 179 states have internal predecessors, (281), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 2 states have call successors, (72) [2023-12-16 04:13:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:22,829 INFO L93 Difference]: Finished difference Result 503 states and 920 transitions. [2023-12-16 04:13:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:13:22,835 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 2 states have call successors, (72) Word has length 486 [2023-12-16 04:13:22,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:22,844 INFO L225 Difference]: With dead ends: 503 [2023-12-16 04:13:22,845 INFO L226 Difference]: Without dead ends: 251 [2023-12-16 04:13:22,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:13:22,853 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:22,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 415 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:13:22,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-16 04:13:22,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2023-12-16 04:13:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 177 states have (on average 1.5480225988700564) internal successors, (274), 177 states have internal predecessors, (274), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 04:13:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 418 transitions. [2023-12-16 04:13:22,938 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 418 transitions. Word has length 486 [2023-12-16 04:13:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:22,938 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 418 transitions. [2023-12-16 04:13:22,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 2 states have call successors, (72) [2023-12-16 04:13:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 418 transitions. [2023-12-16 04:13:22,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-16 04:13:22,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:22,951 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:22,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:23,159 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 [2023-12-16 04:13:23,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:23,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:23,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1007363443, now seen corresponding path program 1 times [2023-12-16 04:13:23,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:23,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110838024] [2023-12-16 04:13:23,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:23,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:23,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:23,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529835002] [2023-12-16 04:13:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:23,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:23,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:23,353 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) [2023-12-16 04:13:23,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:13:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:23,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:13:23,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:13:40,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:40,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:40,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110838024] [2023-12-16 04:13:40,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:40,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529835002] [2023-12-16 04:13:40,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529835002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:40,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:40,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:13:40,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547042330] [2023-12-16 04:13:40,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:40,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:13:40,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:40,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:13:40,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:13:40,298 INFO L87 Difference]: Start difference. First operand 251 states and 418 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:40,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:40,504 INFO L93 Difference]: Finished difference Result 525 states and 868 transitions. [2023-12-16 04:13:40,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:13:40,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 486 [2023-12-16 04:13:40,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:40,509 INFO L225 Difference]: With dead ends: 525 [2023-12-16 04:13:40,509 INFO L226 Difference]: Without dead ends: 275 [2023-12-16 04:13:40,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:13:40,512 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 45 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:40,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1244 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:13:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-16 04:13:40,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 253. [2023-12-16 04:13:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 179 states have (on average 1.541899441340782) internal successors, (276), 179 states have internal predecessors, (276), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 04:13:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 420 transitions. [2023-12-16 04:13:40,553 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 420 transitions. Word has length 486 [2023-12-16 04:13:40,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:40,555 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 420 transitions. [2023-12-16 04:13:40,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:40,556 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 420 transitions. [2023-12-16 04:13:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-16 04:13:40,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:40,560 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:40,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:40,769 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 [2023-12-16 04:13:40,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:40,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:40,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1400390453, now seen corresponding path program 1 times [2023-12-16 04:13:40,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:40,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701675501] [2023-12-16 04:13:40,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:40,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:40,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:40,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008813615] [2023-12-16 04:13:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:40,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:40,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:40,869 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) [2023-12-16 04:13:40,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:13:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:41,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:13:41,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:13:41,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:41,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:41,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701675501] [2023-12-16 04:13:41,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:41,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008813615] [2023-12-16 04:13:41,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008813615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:41,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:41,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:13:41,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294234227] [2023-12-16 04:13:41,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:41,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:13:41,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:41,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:13:41,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:13:41,266 INFO L87 Difference]: Start difference. First operand 253 states and 420 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:41,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:41,329 INFO L93 Difference]: Finished difference Result 509 states and 844 transitions. [2023-12-16 04:13:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:13:41,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 486 [2023-12-16 04:13:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:41,335 INFO L225 Difference]: With dead ends: 509 [2023-12-16 04:13:41,335 INFO L226 Difference]: Without dead ends: 257 [2023-12-16 04:13:41,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:13:41,338 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 3 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:41,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1233 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:13:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-16 04:13:41,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-12-16 04:13:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 181 states have (on average 1.5359116022099448) internal successors, (278), 181 states have internal predecessors, (278), 72 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 04:13:41,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 422 transitions. [2023-12-16 04:13:41,365 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 422 transitions. Word has length 486 [2023-12-16 04:13:41,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:41,368 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 422 transitions. [2023-12-16 04:13:41,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 422 transitions. [2023-12-16 04:13:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-16 04:13:41,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:41,374 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:41,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:41,583 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 [2023-12-16 04:13:41,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:41,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:41,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1400330871, now seen corresponding path program 1 times [2023-12-16 04:13:41,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:41,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439715869] [2023-12-16 04:13:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:41,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:41,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:41,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048268488] [2023-12-16 04:13:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:41,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:41,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:41,779 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) [2023-12-16 04:13:41,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:13:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:42,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:13:42,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:13:42,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:42,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:42,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439715869] [2023-12-16 04:13:42,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:42,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048268488] [2023-12-16 04:13:42,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048268488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:42,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:42,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:13:42,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49668499] [2023-12-16 04:13:42,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:42,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:13:42,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:42,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:13:42,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:13:42,197 INFO L87 Difference]: Start difference. First operand 255 states and 422 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:42,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:42,399 INFO L93 Difference]: Finished difference Result 645 states and 1065 transitions. [2023-12-16 04:13:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:13:42,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 486 [2023-12-16 04:13:42,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:42,403 INFO L225 Difference]: With dead ends: 645 [2023-12-16 04:13:42,403 INFO L226 Difference]: Without dead ends: 391 [2023-12-16 04:13:42,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:13:42,405 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 190 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:42,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 857 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:13:42,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-16 04:13:42,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 388. [2023-12-16 04:13:42,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 291 states have (on average 1.5498281786941581) internal successors, (451), 292 states have internal predecessors, (451), 94 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (94), 93 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-16 04:13:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 639 transitions. [2023-12-16 04:13:42,459 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 639 transitions. Word has length 486 [2023-12-16 04:13:42,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:42,463 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 639 transitions. [2023-12-16 04:13:42,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:42,463 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 639 transitions. [2023-12-16 04:13:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-16 04:13:42,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:42,467 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:42,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:42,680 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 [2023-12-16 04:13:42,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:42,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1865277127, now seen corresponding path program 1 times [2023-12-16 04:13:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:42,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622986690] [2023-12-16 04:13:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:42,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:42,737 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:42,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201270564] [2023-12-16 04:13:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:42,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:42,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:42,739 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) [2023-12-16 04:13:42,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:13:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:43,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:13:43,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:13:43,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:43,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622986690] [2023-12-16 04:13:43,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201270564] [2023-12-16 04:13:43,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201270564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:43,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:43,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:13:43,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599034707] [2023-12-16 04:13:43,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:43,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:13:43,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:43,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:13:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:13:43,189 INFO L87 Difference]: Start difference. First operand 388 states and 639 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:43,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:43,851 INFO L93 Difference]: Finished difference Result 1665 states and 2721 transitions. [2023-12-16 04:13:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:13:43,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 486 [2023-12-16 04:13:43,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:43,859 INFO L225 Difference]: With dead ends: 1665 [2023-12-16 04:13:43,860 INFO L226 Difference]: Without dead ends: 1278 [2023-12-16 04:13:43,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:13:43,862 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 674 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:43,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1309 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:13:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2023-12-16 04:13:43,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1270. [2023-12-16 04:13:43,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 977 states have (on average 1.5373592630501536) internal successors, (1502), 983 states have internal predecessors, (1502), 284 states have call successors, (284), 8 states have call predecessors, (284), 8 states have return successors, (284), 278 states have call predecessors, (284), 284 states have call successors, (284) [2023-12-16 04:13:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 2070 transitions. [2023-12-16 04:13:43,942 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 2070 transitions. Word has length 486 [2023-12-16 04:13:43,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:43,943 INFO L495 AbstractCegarLoop]: Abstraction has 1270 states and 2070 transitions. [2023-12-16 04:13:43,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:43,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 2070 transitions. [2023-12-16 04:13:43,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-16 04:13:43,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:43,947 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:43,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:44,155 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 [2023-12-16 04:13:44,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:44,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:44,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2005825737, now seen corresponding path program 1 times [2023-12-16 04:13:44,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:44,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79334579] [2023-12-16 04:13:44,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:44,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:44,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:44,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428755481] [2023-12-16 04:13:44,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:44,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:44,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:44,256 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) [2023-12-16 04:13:44,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:13:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:44,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:13:44,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:13:44,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:44,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:44,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79334579] [2023-12-16 04:13:44,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:44,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428755481] [2023-12-16 04:13:44,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428755481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:44,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:44,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:13:44,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222341341] [2023-12-16 04:13:44,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:44,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:13:44,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:13:44,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:13:44,930 INFO L87 Difference]: Start difference. First operand 1270 states and 2070 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:45,246 INFO L93 Difference]: Finished difference Result 3718 states and 6045 transitions. [2023-12-16 04:13:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:13:45,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 486 [2023-12-16 04:13:45,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:45,260 INFO L225 Difference]: With dead ends: 3718 [2023-12-16 04:13:45,261 INFO L226 Difference]: Without dead ends: 2449 [2023-12-16 04:13:45,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:13:45,266 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 476 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:45,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1243 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:13:45,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2023-12-16 04:13:45,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 1286. [2023-12-16 04:13:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 993 states have (on average 1.540785498489426) internal successors, (1530), 999 states have internal predecessors, (1530), 284 states have call successors, (284), 8 states have call predecessors, (284), 8 states have return successors, (284), 278 states have call predecessors, (284), 284 states have call successors, (284) [2023-12-16 04:13:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2098 transitions. [2023-12-16 04:13:45,355 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2098 transitions. Word has length 486 [2023-12-16 04:13:45,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:45,355 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 2098 transitions. [2023-12-16 04:13:45,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2098 transitions. [2023-12-16 04:13:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-16 04:13:45,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:45,360 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:45,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:45,569 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 [2023-12-16 04:13:45,569 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:45,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash 443667963, now seen corresponding path program 1 times [2023-12-16 04:13:45,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:45,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423143395] [2023-12-16 04:13:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:45,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:45,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:45,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220063613] [2023-12-16 04:13:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:45,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:45,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:45,630 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) [2023-12-16 04:13:45,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:13:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:45,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:13:45,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 4427 proven. 147 refuted. 0 times theorem prover too weak. 5650 trivial. 0 not checked. [2023-12-16 04:13:46,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:13:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 66 proven. 147 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-16 04:13:46,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:46,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423143395] [2023-12-16 04:13:46,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:46,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220063613] [2023-12-16 04:13:46,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220063613] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:13:46,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:13:46,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:13:46,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246616186] [2023-12-16 04:13:46,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:13:46,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:13:46,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:46,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:13:46,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:13:46,834 INFO L87 Difference]: Start difference. First operand 1286 states and 2098 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-16 04:13:47,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:47,326 INFO L93 Difference]: Finished difference Result 2083 states and 3390 transitions. [2023-12-16 04:13:47,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:13:47,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 486 [2023-12-16 04:13:47,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:47,333 INFO L225 Difference]: With dead ends: 2083 [2023-12-16 04:13:47,333 INFO L226 Difference]: Without dead ends: 798 [2023-12-16 04:13:47,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 964 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:13:47,338 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 459 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:47,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 822 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:13:47,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2023-12-16 04:13:47,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 790. [2023-12-16 04:13:47,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 585 states have (on average 1.5094017094017094) internal successors, (883), 587 states have internal predecessors, (883), 196 states have call successors, (196), 8 states have call predecessors, (196), 8 states have return successors, (196), 194 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-16 04:13:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1275 transitions. [2023-12-16 04:13:47,405 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1275 transitions. Word has length 486 [2023-12-16 04:13:47,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:47,406 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 1275 transitions. [2023-12-16 04:13:47,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-16 04:13:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1275 transitions. [2023-12-16 04:13:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-12-16 04:13:47,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:47,410 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:47,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:47,636 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 [2023-12-16 04:13:47,637 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:47,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:47,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1699060584, now seen corresponding path program 1 times [2023-12-16 04:13:47,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:47,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326484748] [2023-12-16 04:13:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:47,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:47,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:47,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825407098] [2023-12-16 04:13:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:47,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:47,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:47,728 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) [2023-12-16 04:13:47,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:13:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:48,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:13:48,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:13:48,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:48,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:48,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326484748] [2023-12-16 04:13:48,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:48,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825407098] [2023-12-16 04:13:48,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825407098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:48,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:48,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:13:48,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996524876] [2023-12-16 04:13:48,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:48,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:13:48,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:48,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:13:48,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:13:48,126 INFO L87 Difference]: Start difference. First operand 790 states and 1275 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:48,212 INFO L93 Difference]: Finished difference Result 2354 states and 3799 transitions. [2023-12-16 04:13:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:13:48,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 488 [2023-12-16 04:13:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:48,220 INFO L225 Difference]: With dead ends: 2354 [2023-12-16 04:13:48,220 INFO L226 Difference]: Without dead ends: 1565 [2023-12-16 04:13:48,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:13:48,223 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 387 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:48,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 800 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:13:48,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2023-12-16 04:13:48,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1561. [2023-12-16 04:13:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1152 states have (on average 1.5) internal successors, (1728), 1156 states have internal predecessors, (1728), 392 states have call successors, (392), 16 states have call predecessors, (392), 16 states have return successors, (392), 388 states have call predecessors, (392), 392 states have call successors, (392) [2023-12-16 04:13:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 2512 transitions. [2023-12-16 04:13:48,350 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 2512 transitions. Word has length 488 [2023-12-16 04:13:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:48,350 INFO L495 AbstractCegarLoop]: Abstraction has 1561 states and 2512 transitions. [2023-12-16 04:13:48,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 2512 transitions. [2023-12-16 04:13:48,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-12-16 04:13:48,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:48,354 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:48,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:48,570 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 [2023-12-16 04:13:48,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:48,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:48,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1676758584, now seen corresponding path program 1 times [2023-12-16 04:13:48,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:48,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397422452] [2023-12-16 04:13:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:48,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:48,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:48,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276381060] [2023-12-16 04:13:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:48,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:48,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:48,649 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) [2023-12-16 04:13:48,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:13:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:48,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:13:48,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 5183 proven. 105 refuted. 0 times theorem prover too weak. 4936 trivial. 0 not checked. [2023-12-16 04:13:49,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:13:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 108 proven. 105 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-16 04:13:49,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:49,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397422452] [2023-12-16 04:13:49,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:49,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276381060] [2023-12-16 04:13:49,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276381060] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:13:49,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:13:49,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:13:49,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106935034] [2023-12-16 04:13:49,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:13:49,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:13:49,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:49,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:13:49,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:13:49,612 INFO L87 Difference]: Start difference. First operand 1561 states and 2512 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-12-16 04:13:50,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:50,125 INFO L93 Difference]: Finished difference Result 3153 states and 5051 transitions. [2023-12-16 04:13:50,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:13:50,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 488 [2023-12-16 04:13:50,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:50,137 INFO L225 Difference]: With dead ends: 3153 [2023-12-16 04:13:50,137 INFO L226 Difference]: Without dead ends: 1593 [2023-12-16 04:13:50,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 968 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:13:50,144 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 653 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:50,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 822 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:13:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2023-12-16 04:13:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1577. [2023-12-16 04:13:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1164 states have (on average 1.4879725085910653) internal successors, (1732), 1168 states have internal predecessors, (1732), 392 states have call successors, (392), 20 states have call predecessors, (392), 20 states have return successors, (392), 388 states have call predecessors, (392), 392 states have call successors, (392) [2023-12-16 04:13:50,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2516 transitions. [2023-12-16 04:13:50,421 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2516 transitions. Word has length 488 [2023-12-16 04:13:50,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:50,421 INFO L495 AbstractCegarLoop]: Abstraction has 1577 states and 2516 transitions. [2023-12-16 04:13:50,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (107), 2 states have call predecessors, (107), 4 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2023-12-16 04:13:50,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2516 transitions. [2023-12-16 04:13:50,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-16 04:13:50,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:50,427 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:50,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:50,636 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 [2023-12-16 04:13:50,637 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:50,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:50,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1371794498, now seen corresponding path program 1 times [2023-12-16 04:13:50,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:50,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952891269] [2023-12-16 04:13:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:50,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:50,703 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:50,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221682210] [2023-12-16 04:13:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:50,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:50,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:50,704 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) [2023-12-16 04:13:50,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:13:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:51,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:13:51,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:13:51,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:13:51,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:51,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952891269] [2023-12-16 04:13:51,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:51,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221682210] [2023-12-16 04:13:51,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221682210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:13:51,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:13:51,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:13:51,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999199816] [2023-12-16 04:13:51,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:13:51,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:13:51,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:13:51,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:13:51,231 INFO L87 Difference]: Start difference. First operand 1577 states and 2516 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:51,660 INFO L93 Difference]: Finished difference Result 4785 states and 7614 transitions. [2023-12-16 04:13:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:13:51,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 490 [2023-12-16 04:13:51,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:51,677 INFO L225 Difference]: With dead ends: 4785 [2023-12-16 04:13:51,677 INFO L226 Difference]: Without dead ends: 3209 [2023-12-16 04:13:51,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:13:51,684 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 499 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:51,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 911 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:13:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2023-12-16 04:13:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 3019. [2023-12-16 04:13:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2190 states have (on average 1.4684931506849315) internal successors, (3216), 2202 states have internal predecessors, (3216), 784 states have call successors, (784), 44 states have call predecessors, (784), 44 states have return successors, (784), 772 states have call predecessors, (784), 784 states have call successors, (784) [2023-12-16 04:13:51,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 4784 transitions. [2023-12-16 04:13:51,975 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 4784 transitions. Word has length 490 [2023-12-16 04:13:51,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:51,976 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 4784 transitions. [2023-12-16 04:13:51,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:13:51,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 4784 transitions. [2023-12-16 04:13:51,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-16 04:13:51,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:51,981 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:51,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:52,189 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 [2023-12-16 04:13:52,190 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:52,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:52,191 INFO L85 PathProgramCache]: Analyzing trace with hash -949092672, now seen corresponding path program 1 times [2023-12-16 04:13:52,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:52,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419219596] [2023-12-16 04:13:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:52,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:52,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:52,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754432161] [2023-12-16 04:13:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:52,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:52,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:52,239 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) [2023-12-16 04:13:52,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:13:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:52,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:13:52,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 5163 proven. 99 refuted. 0 times theorem prover too weak. 4962 trivial. 0 not checked. [2023-12-16 04:13:52,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:13:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 114 proven. 99 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-16 04:13:53,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419219596] [2023-12-16 04:13:53,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754432161] [2023-12-16 04:13:53,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754432161] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:13:53,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:13:53,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:13:53,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128035335] [2023-12-16 04:13:53,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:13:53,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:13:53,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:53,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:13:53,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:13:53,109 INFO L87 Difference]: Start difference. First operand 3019 states and 4784 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2023-12-16 04:13:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:54,053 INFO L93 Difference]: Finished difference Result 6181 states and 9738 transitions. [2023-12-16 04:13:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:13:54,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) Word has length 490 [2023-12-16 04:13:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:54,068 INFO L225 Difference]: With dead ends: 6181 [2023-12-16 04:13:54,069 INFO L226 Difference]: Without dead ends: 3163 [2023-12-16 04:13:54,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 972 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:13:54,078 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 719 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:54,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 912 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 04:13:54,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2023-12-16 04:13:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3120. [2023-12-16 04:13:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3120 states, 2242 states have (on average 1.4487065120428189) internal successors, (3248), 2255 states have internal predecessors, (3248), 822 states have call successors, (822), 55 states have call predecessors, (822), 55 states have return successors, (822), 809 states have call predecessors, (822), 822 states have call successors, (822) [2023-12-16 04:13:54,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4892 transitions. [2023-12-16 04:13:54,342 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4892 transitions. Word has length 490 [2023-12-16 04:13:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:54,343 INFO L495 AbstractCegarLoop]: Abstraction has 3120 states and 4892 transitions. [2023-12-16 04:13:54,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 2 states have call successors, (105), 2 states have call predecessors, (105), 4 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2023-12-16 04:13:54,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4892 transitions. [2023-12-16 04:13:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-16 04:13:54,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:54,349 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:54,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:54,558 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 [2023-12-16 04:13:54,558 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:54,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1434832066, now seen corresponding path program 1 times [2023-12-16 04:13:54,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:54,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289047105] [2023-12-16 04:13:54,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:54,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:54,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:54,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206392974] [2023-12-16 04:13:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:54,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:54,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:54,609 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) [2023-12-16 04:13:54,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 04:13:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:54,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:13:54,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 4631 proven. 141 refuted. 0 times theorem prover too weak. 5452 trivial. 0 not checked. [2023-12-16 04:13:55,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:13:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 72 proven. 141 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-16 04:13:55,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:55,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289047105] [2023-12-16 04:13:55,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:55,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206392974] [2023-12-16 04:13:55,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206392974] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:13:55,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:13:55,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 04:13:55,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834572736] [2023-12-16 04:13:55,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:13:55,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:13:55,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:55,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:13:55,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:13:55,666 INFO L87 Difference]: Start difference. First operand 3120 states and 4892 transitions. Second operand has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 3 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 3 states have call predecessors, (120), 3 states have call successors, (120) [2023-12-16 04:13:56,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:56,270 INFO L93 Difference]: Finished difference Result 6280 states and 9772 transitions. [2023-12-16 04:13:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:13:56,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 3 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 3 states have call predecessors, (120), 3 states have call successors, (120) Word has length 490 [2023-12-16 04:13:56,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:56,286 INFO L225 Difference]: With dead ends: 6280 [2023-12-16 04:13:56,287 INFO L226 Difference]: Without dead ends: 3230 [2023-12-16 04:13:56,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 972 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:13:56,296 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 433 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:56,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 818 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:13:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2023-12-16 04:13:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 3188. [2023-12-16 04:13:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3188 states, 2293 states have (on average 1.4334932402965548) internal successors, (3287), 2306 states have internal predecessors, (3287), 822 states have call successors, (822), 72 states have call predecessors, (822), 72 states have return successors, (822), 809 states have call predecessors, (822), 822 states have call successors, (822) [2023-12-16 04:13:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 4931 transitions. [2023-12-16 04:13:56,561 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 4931 transitions. Word has length 490 [2023-12-16 04:13:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:56,561 INFO L495 AbstractCegarLoop]: Abstraction has 3188 states and 4931 transitions. [2023-12-16 04:13:56,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 3 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 3 states have call predecessors, (120), 3 states have call successors, (120) [2023-12-16 04:13:56,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 4931 transitions. [2023-12-16 04:13:56,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-16 04:13:56,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:56,567 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:56,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:56,776 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 [2023-12-16 04:13:56,777 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:56,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:56,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1599217980, now seen corresponding path program 1 times [2023-12-16 04:13:56,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:56,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890224442] [2023-12-16 04:13:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:56,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:56,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:56,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329903879] [2023-12-16 04:13:56,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:56,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:56,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:56,828 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) [2023-12-16 04:13:56,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 04:13:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:57,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:13:57,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:13:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 2531 proven. 183 refuted. 0 times theorem prover too weak. 7510 trivial. 0 not checked. [2023-12-16 04:13:57,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:13:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 30 proven. 183 refuted. 0 times theorem prover too weak. 10011 trivial. 0 not checked. [2023-12-16 04:13:58,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:13:58,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890224442] [2023-12-16 04:13:58,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:13:58,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329903879] [2023-12-16 04:13:58,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329903879] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:13:58,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:13:58,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 04:13:58,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494929327] [2023-12-16 04:13:58,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:13:58,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:13:58,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:13:58,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:13:58,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:13:58,048 INFO L87 Difference]: Start difference. First operand 3188 states and 4931 transitions. Second operand has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 3 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 3 states have call predecessors, (134), 3 states have call successors, (134) [2023-12-16 04:13:58,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:13:58,566 INFO L93 Difference]: Finished difference Result 6412 states and 9847 transitions. [2023-12-16 04:13:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:13:58,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 3 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 3 states have call predecessors, (134), 3 states have call successors, (134) Word has length 490 [2023-12-16 04:13:58,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:13:58,584 INFO L225 Difference]: With dead ends: 6412 [2023-12-16 04:13:58,584 INFO L226 Difference]: Without dead ends: 3298 [2023-12-16 04:13:58,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 972 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:13:58,594 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 561 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:13:58,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 825 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:13:58,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2023-12-16 04:13:58,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 3256. [2023-12-16 04:13:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3256 states, 2344 states have (on average 1.4172354948805461) internal successors, (3322), 2357 states have internal predecessors, (3322), 822 states have call successors, (822), 89 states have call predecessors, (822), 89 states have return successors, (822), 809 states have call predecessors, (822), 822 states have call successors, (822) [2023-12-16 04:13:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 4966 transitions. [2023-12-16 04:13:58,898 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 4966 transitions. Word has length 490 [2023-12-16 04:13:58,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:13:58,899 INFO L495 AbstractCegarLoop]: Abstraction has 3256 states and 4966 transitions. [2023-12-16 04:13:58,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 3 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 3 states have call predecessors, (134), 3 states have call successors, (134) [2023-12-16 04:13:58,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 4966 transitions. [2023-12-16 04:13:58,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-16 04:13:58,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:13:58,906 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:13:58,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 04:13:59,115 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 [2023-12-16 04:13:59,116 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:13:59,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:13:59,117 INFO L85 PathProgramCache]: Analyzing trace with hash -705731642, now seen corresponding path program 1 times [2023-12-16 04:13:59,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:13:59,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617675307] [2023-12-16 04:13:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:13:59,209 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:13:59,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590028888] [2023-12-16 04:13:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:13:59,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:13:59,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:13:59,211 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) [2023-12-16 04:13:59,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 04:13:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:13:59,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 04:13:59,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:14:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2023-12-16 04:14:00,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:14:00,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:14:00,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617675307] [2023-12-16 04:14:00,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:14:00,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590028888] [2023-12-16 04:14:00,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590028888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:14:00,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:14:00,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:14:00,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684367507] [2023-12-16 04:14:00,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:14:00,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:14:00,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:14:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:14:00,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:14:00,080 INFO L87 Difference]: Start difference. First operand 3256 states and 4966 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:14:01,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:14:01,452 INFO L93 Difference]: Finished difference Result 11685 states and 17757 transitions. [2023-12-16 04:14:01,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 04:14:01,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) Word has length 490 [2023-12-16 04:14:01,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:14:01,490 INFO L225 Difference]: With dead ends: 11685 [2023-12-16 04:14:01,491 INFO L226 Difference]: Without dead ends: 8507 [2023-12-16 04:14:01,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:14:01,505 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1170 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 04:14:01,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 2333 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 04:14:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8507 states. [2023-12-16 04:14:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8507 to 5411. [2023-12-16 04:14:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5411 states, 4111 states have (on average 1.4529311603016297) internal successors, (5973), 4140 states have internal predecessors, (5973), 1176 states have call successors, (1176), 123 states have call predecessors, (1176), 123 states have return successors, (1176), 1147 states have call predecessors, (1176), 1176 states have call successors, (1176) [2023-12-16 04:14:02,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 8325 transitions. [2023-12-16 04:14:02,049 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 8325 transitions. Word has length 490 [2023-12-16 04:14:02,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:14:02,050 INFO L495 AbstractCegarLoop]: Abstraction has 5411 states and 8325 transitions. [2023-12-16 04:14:02,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 1 states have call successors, (72), 1 states have call predecessors, (72), 1 states have return successors, (72), 1 states have call predecessors, (72), 1 states have call successors, (72) [2023-12-16 04:14:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 8325 transitions. [2023-12-16 04:14:02,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-16 04:14:02,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:14:02,059 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:14:02,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 04:14:02,269 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 [2023-12-16 04:14:02,270 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:14:02,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:14:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1662304152, now seen corresponding path program 1 times [2023-12-16 04:14:02,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:14:02,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075062308] [2023-12-16 04:14:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:14:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:14:02,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:14:02,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160781321] [2023-12-16 04:14:02,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:14:02,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:14:02,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:14:02,331 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) [2023-12-16 04:14:02,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 04:14:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:14:02,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-16 04:14:02,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:14:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 3959 proven. 530 refuted. 0 times theorem prover too weak. 5735 trivial. 0 not checked. [2023-12-16 04:14:05,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:14:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 309 proven. 525 refuted. 0 times theorem prover too weak. 9390 trivial. 0 not checked. [2023-12-16 04:14:08,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:14:08,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075062308] [2023-12-16 04:14:08,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:14:08,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160781321] [2023-12-16 04:14:08,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160781321] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:14:08,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:14:08,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 40 [2023-12-16 04:14:08,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402868581] [2023-12-16 04:14:08,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:14:08,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-16 04:14:08,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:14:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-16 04:14:08,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=1228, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 04:14:08,403 INFO L87 Difference]: Start difference. First operand 5411 states and 8325 transitions. Second operand has 40 states, 38 states have (on average 6.605263157894737) internal successors, (251), 36 states have internal predecessors, (251), 10 states have call successors, (144), 6 states have call predecessors, (144), 13 states have return successors, (144), 10 states have call predecessors, (144), 10 states have call successors, (144) Received shutdown request... [2023-12-16 04:14:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-16 04:14:11,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 943 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1218, Invalid=3612, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 04:14:11,503 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1178 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 04:14:11,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 2033 Invalid, 2420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 04:14:11,504 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:14:11,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 04:14:11,525 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:14:11,528 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:14:11,705 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 [2023-12-16 04:14:11,705 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (5411states) and FLOYD_HOARE automaton (currently 33 states, 40 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 70 known predicates. [2023-12-16 04:14:11,709 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:14:11,711 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:14:11,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:14:11 BoogieIcfgContainer [2023-12-16 04:14:11,712 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:14:11,713 INFO L158 Benchmark]: Toolchain (without parser) took 52526.84ms. Allocated memory was 333.4MB in the beginning and 6.7GB in the end (delta: 6.3GB). Free memory was 282.2MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2023-12-16 04:14:11,713 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 197.1MB. Free memory is still 148.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:14:11,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 576.42ms. Allocated memory is still 333.4MB. Free memory was 281.9MB in the beginning and 243.0MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-16 04:14:11,713 INFO L158 Benchmark]: Boogie Procedure Inliner took 143.99ms. Allocated memory is still 333.4MB. Free memory was 243.0MB in the beginning and 284.6MB in the end (delta: -41.6MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. [2023-12-16 04:14:11,713 INFO L158 Benchmark]: Boogie Preprocessor took 161.72ms. Allocated memory is still 333.4MB. Free memory was 284.6MB in the beginning and 241.3MB in the end (delta: 43.3MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2023-12-16 04:14:11,714 INFO L158 Benchmark]: RCFGBuilder took 1529.70ms. Allocated memory is still 333.4MB. Free memory was 241.3MB in the beginning and 255.1MB in the end (delta: -13.8MB). Peak memory consumption was 81.9MB. Max. memory is 8.0GB. [2023-12-16 04:14:11,714 INFO L158 Benchmark]: TraceAbstraction took 50106.02ms. Allocated memory was 333.4MB in the beginning and 6.7GB in the end (delta: 6.3GB). Free memory was 254.6MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2023-12-16 04:14:11,715 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 197.1MB. Free memory is still 148.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 576.42ms. Allocated memory is still 333.4MB. Free memory was 281.9MB in the beginning and 243.0MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 143.99ms. Allocated memory is still 333.4MB. Free memory was 243.0MB in the beginning and 284.6MB in the end (delta: -41.6MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 161.72ms. Allocated memory is still 333.4MB. Free memory was 284.6MB in the beginning and 241.3MB in the end (delta: 43.3MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. * RCFGBuilder took 1529.70ms. Allocated memory is still 333.4MB. Free memory was 241.3MB in the beginning and 255.1MB in the end (delta: -13.8MB). Peak memory consumption was 81.9MB. Max. memory is 8.0GB. * TraceAbstraction took 50106.02ms. Allocated memory was 333.4MB in the beginning and 6.7GB in the end (delta: 6.3GB). Free memory was 254.6MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (5411states) and FLOYD_HOARE automaton (currently 33 states, 40 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 70 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 253 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.0s, OverallIterations: 15, TraceHistogramMax: 72, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7577 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7447 mSDsluCounter, 16577 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10385 mSDsCounter, 1262 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5165 IncrementalHoareTripleChecker+Invalid, 6427 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1262 mSolverCounterUnsat, 6192 mSDtfsCounter, 5165 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10297 GetRequests, 10153 SyntacticMatches, 3 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5411occurred in iteration=14, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 4639 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 27.0s InterpolantComputationTime, 7804 NumberOfCodeBlocks, 7804 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 10231 ConstructedInterpolants, 0 QuantifiedInterpolants, 28459 SizeOfPredicates, 47 NumberOfNonLiveVariables, 18840 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 212299/214704 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