/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-17.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:06:04,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:06:04,559 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 04:06:04,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:06:04,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:06:04,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:06:04,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:06:04,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:06:04,589 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:06:04,590 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:06:04,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:06:04,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:06:04,590 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:06:04,591 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:06:04,591 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:06:04,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:06:04,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:06:04,600 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:06:04,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:06:04,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:06:04,604 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:06:04,607 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:06:04,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:06:04,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:06:04,607 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:06:04,608 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:06:04,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:06:04,608 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:06:04,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:06:04,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:06:04,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:06:04,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:06:04,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:06:04,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:06:04,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:06:04,609 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:06:04,609 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:06:04,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:06:04,610 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:06:04,610 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:06:04,610 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:06:04,611 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:06:04,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:06:04,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:06:04,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:06:04,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:06:04,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:06:04,832 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:06:04,832 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:06:04,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-17.i [2023-12-16 04:06:05,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:06:06,108 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:06:06,108 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-17.i [2023-12-16 04:06:06,122 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a240c634/6b9a82271978465883f53661e079012c/FLAG90630af4c [2023-12-16 04:06:06,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a240c634/6b9a82271978465883f53661e079012c [2023-12-16 04:06:06,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:06:06,145 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:06:06,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:06:06,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:06:06,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:06:06,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0e3cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06, skipping insertion in model container [2023-12-16 04:06:06,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,186 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:06:06,299 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-17.i[916,929] [2023-12-16 04:06:06,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:06:06,511 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:06:06,528 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-17.i[916,929] [2023-12-16 04:06:06,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:06:06,633 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:06:06,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06 WrapperNode [2023-12-16 04:06:06,633 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:06:06,634 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:06:06,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:06:06,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:06:06,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,785 INFO L138 Inliner]: procedures = 26, calls = 82, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 699 [2023-12-16 04:06:06,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:06:06,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:06:06,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:06:06,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:06:06,795 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,813 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,887 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 04:06:06,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:06:06,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:06:06,944 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:06:06,944 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:06:06,945 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (1/1) ... [2023-12-16 04:06:06,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:06:06,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:06,969 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 04:06:07,009 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 04:06:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:06:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:06:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:06:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:06:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:06:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:06:07,169 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:06:07,171 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:06:07,935 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:06:07,990 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:06:07,991 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:06:07,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:06:07 BoogieIcfgContainer [2023-12-16 04:06:07,991 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:06:07,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:06:07,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:06:07,996 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:06:07,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:06:06" (1/3) ... [2023-12-16 04:06:07,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6830e0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:06:07, skipping insertion in model container [2023-12-16 04:06:07,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:06:06" (2/3) ... [2023-12-16 04:06:07,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6830e0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:06:07, skipping insertion in model container [2023-12-16 04:06:07,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:06:07" (3/3) ... [2023-12-16 04:06:07,999 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-17.i [2023-12-16 04:06:08,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:06:08,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:06:08,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:06:08,065 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;@6de8dc2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:06:08,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:06:08,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 176 states have (on average 1.5284090909090908) internal successors, (269), 177 states have internal predecessors, (269), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-16 04:06:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-12-16 04:06:08,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:08,105 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:08,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:08,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:08,109 INFO L85 PathProgramCache]: Analyzing trace with hash 828516344, now seen corresponding path program 1 times [2023-12-16 04:06:08,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:08,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843765143] [2023-12-16 04:06:08,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:08,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:08,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:08,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843765143] [2023-12-16 04:06:08,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 04:06:08,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763853173] [2023-12-16 04:06:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:08,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:08,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:08,460 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 04:06:08,489 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 04:06:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:08,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 04:06:08,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2023-12-16 04:06:08,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:06:08,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763853173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:06:08,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:06:08,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:06:08,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840591601] [2023-12-16 04:06:08,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:06:08,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:06:08,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:08,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:06:08,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:06:08,975 INFO L87 Difference]: Start difference. First operand has 248 states, 176 states have (on average 1.5284090909090908) internal successors, (269), 177 states have internal predecessors, (269), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-16 04:06:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:09,029 INFO L93 Difference]: Finished difference Result 493 states and 881 transitions. [2023-12-16 04:06:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:06:09,032 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) Word has length 479 [2023-12-16 04:06:09,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:09,042 INFO L225 Difference]: With dead ends: 493 [2023-12-16 04:06:09,042 INFO L226 Difference]: Without dead ends: 246 [2023-12-16 04:06:09,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 478 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 04:06:09,051 INFO L413 NwaCegarLoop]: 398 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, 398 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 04:06:09,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 398 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:06:09,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-16 04:06:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2023-12-16 04:06:09,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 175 states have (on average 1.502857142857143) internal successors, (263), 175 states have internal predecessors, (263), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-16 04:06:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 401 transitions. [2023-12-16 04:06:09,151 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 401 transitions. Word has length 479 [2023-12-16 04:06:09,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:09,152 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 401 transitions. [2023-12-16 04:06:09,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-16 04:06:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 401 transitions. [2023-12-16 04:06:09,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-12-16 04:06:09,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:09,172 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:09,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 04:06:09,379 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 04:06:09,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:09,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:09,381 INFO L85 PathProgramCache]: Analyzing trace with hash 602757422, now seen corresponding path program 1 times [2023-12-16 04:06:09,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:09,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651259652] [2023-12-16 04:06:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:09,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:09,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:09,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925690479] [2023-12-16 04:06:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:09,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:09,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:09,511 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 04:06:09,574 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 04:06:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:09,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:06:09,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-16 04:06:09,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:06:09,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:09,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651259652] [2023-12-16 04:06:09,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:09,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925690479] [2023-12-16 04:06:09,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925690479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:06:09,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:06:09,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:06:09,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320151966] [2023-12-16 04:06:09,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:06:09,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:06:09,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:09,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:06:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:06:09,908 INFO L87 Difference]: Start difference. First operand 246 states and 401 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:09,972 INFO L93 Difference]: Finished difference Result 492 states and 803 transitions. [2023-12-16 04:06:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:06:09,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 479 [2023-12-16 04:06:09,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:09,979 INFO L225 Difference]: With dead ends: 492 [2023-12-16 04:06:09,979 INFO L226 Difference]: Without dead ends: 247 [2023-12-16 04:06:09,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 477 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 04:06:09,981 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 0 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:09,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 788 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:06:09,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-16 04:06:10,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2023-12-16 04:06:10,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 176 states have (on average 1.5) internal successors, (264), 176 states have internal predecessors, (264), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-16 04:06:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 402 transitions. [2023-12-16 04:06:10,013 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 402 transitions. Word has length 479 [2023-12-16 04:06:10,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:10,015 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 402 transitions. [2023-12-16 04:06:10,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:10,016 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 402 transitions. [2023-12-16 04:06:10,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-12-16 04:06:10,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:10,021 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:10,028 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 04:06:10,228 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 04:06:10,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:10,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:10,229 INFO L85 PathProgramCache]: Analyzing trace with hash -677106256, now seen corresponding path program 1 times [2023-12-16 04:06:10,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:10,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287264397] [2023-12-16 04:06:10,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:10,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:10,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:10,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913763938] [2023-12-16 04:06:10,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:10,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:10,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:10,333 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 04:06:10,359 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 04:06:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:10,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:06:10,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-16 04:06:10,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:06:10,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:10,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287264397] [2023-12-16 04:06:10,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:10,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913763938] [2023-12-16 04:06:10,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913763938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:06:10,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:06:10,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:06:10,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558617188] [2023-12-16 04:06:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:06:10,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:06:10,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:10,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:06:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:06:10,696 INFO L87 Difference]: Start difference. First operand 247 states and 402 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:10,794 INFO L93 Difference]: Finished difference Result 738 states and 1202 transitions. [2023-12-16 04:06:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:06:10,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 479 [2023-12-16 04:06:10,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:10,797 INFO L225 Difference]: With dead ends: 738 [2023-12-16 04:06:10,797 INFO L226 Difference]: Without dead ends: 492 [2023-12-16 04:06:10,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 476 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 04:06:10,798 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 390 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:10,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1166 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:06:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-16 04:06:10,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 254. [2023-12-16 04:06:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 183 states have (on average 1.4918032786885247) internal successors, (273), 183 states have internal predecessors, (273), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-16 04:06:10,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 411 transitions. [2023-12-16 04:06:10,812 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 411 transitions. Word has length 479 [2023-12-16 04:06:10,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:10,813 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 411 transitions. [2023-12-16 04:06:10,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:10,813 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 411 transitions. [2023-12-16 04:06:10,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-16 04:06:10,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:10,818 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:10,840 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 04:06:11,025 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 04:06:11,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:11,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:11,027 INFO L85 PathProgramCache]: Analyzing trace with hash -715727731, now seen corresponding path program 1 times [2023-12-16 04:06:11,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:11,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863595009] [2023-12-16 04:06:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:11,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:11,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:11,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434337369] [2023-12-16 04:06:11,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:11,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:11,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:11,100 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 04:06:11,145 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 04:06:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:11,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:06:11,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-16 04:06:11,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:06:11,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:11,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863595009] [2023-12-16 04:06:11,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:11,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434337369] [2023-12-16 04:06:11,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434337369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:06:11,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:06:11,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:06:11,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066432486] [2023-12-16 04:06:11,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:06:11,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:06:11,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:11,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:06:11,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:06:11,554 INFO L87 Difference]: Start difference. First operand 254 states and 411 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:11,626 INFO L93 Difference]: Finished difference Result 523 states and 844 transitions. [2023-12-16 04:06:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:06:11,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-16 04:06:11,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:11,629 INFO L225 Difference]: With dead ends: 523 [2023-12-16 04:06:11,629 INFO L226 Difference]: Without dead ends: 270 [2023-12-16 04:06:11,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 477 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 04:06:11,631 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 30 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:11,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1189 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:06:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-16 04:06:11,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 256. [2023-12-16 04:06:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 185 states have (on average 1.4864864864864864) internal successors, (275), 185 states have internal predecessors, (275), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-16 04:06:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 413 transitions. [2023-12-16 04:06:11,642 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 413 transitions. Word has length 480 [2023-12-16 04:06:11,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:11,643 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 413 transitions. [2023-12-16 04:06:11,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 413 transitions. [2023-12-16 04:06:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-16 04:06:11,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:11,650 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:11,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 04:06:11,858 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 04:06:11,858 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:11,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:11,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1525074357, now seen corresponding path program 1 times [2023-12-16 04:06:11,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:11,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885820365] [2023-12-16 04:06:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:11,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:11,920 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:11,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568739184] [2023-12-16 04:06:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:11,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:11,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:11,938 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 04:06:11,964 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 04:06:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:12,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:06:12,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-16 04:06:13,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:06:13,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885820365] [2023-12-16 04:06:13,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:13,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568739184] [2023-12-16 04:06:13,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568739184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:06:13,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:06:13,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:06:13,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664572002] [2023-12-16 04:06:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:06:13,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:06:13,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:06:13,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:06:13,039 INFO L87 Difference]: Start difference. First operand 256 states and 413 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:13,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:13,628 INFO L93 Difference]: Finished difference Result 515 states and 830 transitions. [2023-12-16 04:06:13,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:06:13,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-16 04:06:13,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:13,635 INFO L225 Difference]: With dead ends: 515 [2023-12-16 04:06:13,635 INFO L226 Difference]: Without dead ends: 260 [2023-12-16 04:06:13,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 477 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 04:06:13,636 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 3 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:13,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1182 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:06:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-16 04:06:13,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2023-12-16 04:06:13,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 187 states have (on average 1.481283422459893) internal successors, (277), 187 states have internal predecessors, (277), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-16 04:06:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 415 transitions. [2023-12-16 04:06:13,646 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 415 transitions. Word has length 480 [2023-12-16 04:06:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:13,647 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 415 transitions. [2023-12-16 04:06:13,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 415 transitions. [2023-12-16 04:06:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-16 04:06:13,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:13,650 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:13,663 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 04:06:13,858 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 04:06:13,858 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:13,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1525014775, now seen corresponding path program 1 times [2023-12-16 04:06:13,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:13,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534426750] [2023-12-16 04:06:13,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:13,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:13,914 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:13,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394191712] [2023-12-16 04:06:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:13,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:13,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:13,930 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 04:06:13,944 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 04:06:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:14,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 04:06:14,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-16 04:06:15,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:06:15,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:15,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534426750] [2023-12-16 04:06:15,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:15,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394191712] [2023-12-16 04:06:15,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394191712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:06:15,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:06:15,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:06:15,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150486132] [2023-12-16 04:06:15,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:06:15,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:06:15,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:15,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:06:15,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:06:15,239 INFO L87 Difference]: Start difference. First operand 258 states and 415 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:15,491 INFO L93 Difference]: Finished difference Result 773 states and 1244 transitions. [2023-12-16 04:06:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:06:15,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-16 04:06:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:15,494 INFO L225 Difference]: With dead ends: 773 [2023-12-16 04:06:15,494 INFO L226 Difference]: Without dead ends: 516 [2023-12-16 04:06:15,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 477 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 04:06:15,496 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 315 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:15,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1176 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:06:15,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-12-16 04:06:15,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 388. [2023-12-16 04:06:15,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 247 states have (on average 1.4008097165991902) internal successors, (346), 247 states have internal predecessors, (346), 138 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-16 04:06:15,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 622 transitions. [2023-12-16 04:06:15,551 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 622 transitions. Word has length 480 [2023-12-16 04:06:15,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:15,553 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 622 transitions. [2023-12-16 04:06:15,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:15,553 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 622 transitions. [2023-12-16 04:06:15,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-16 04:06:15,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:15,558 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:15,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 04:06:15,766 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 04:06:15,766 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:15,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:15,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1712114443, now seen corresponding path program 1 times [2023-12-16 04:06:15,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:15,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669751339] [2023-12-16 04:06:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:15,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:15,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:15,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202274409] [2023-12-16 04:06:15,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:15,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:15,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:15,824 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 04:06:15,841 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 04:06:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:16,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:06:16,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-16 04:06:16,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:06:16,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:16,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669751339] [2023-12-16 04:06:16,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:16,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202274409] [2023-12-16 04:06:16,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202274409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:06:16,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:06:16,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:06:16,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919998205] [2023-12-16 04:06:16,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:06:16,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:06:16,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:16,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:06:16,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:06:16,309 INFO L87 Difference]: Start difference. First operand 388 states and 622 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:16,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:16,371 INFO L93 Difference]: Finished difference Result 795 states and 1276 transitions. [2023-12-16 04:06:16,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:06:16,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-16 04:06:16,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:16,375 INFO L225 Difference]: With dead ends: 795 [2023-12-16 04:06:16,376 INFO L226 Difference]: Without dead ends: 538 [2023-12-16 04:06:16,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 478 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 04:06:16,377 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 184 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:16,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 927 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:06:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-16 04:06:16,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 535. [2023-12-16 04:06:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 391 states have (on average 1.4782608695652173) internal successors, (578), 392 states have internal predecessors, (578), 140 states have call successors, (140), 3 states have call predecessors, (140), 3 states have return successors, (140), 139 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-16 04:06:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 858 transitions. [2023-12-16 04:06:16,421 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 858 transitions. Word has length 480 [2023-12-16 04:06:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:16,423 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 858 transitions. [2023-12-16 04:06:16,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 858 transitions. [2023-12-16 04:06:16,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-16 04:06:16,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:16,427 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:16,440 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 04:06:16,640 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 04:06:16,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:16,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:16,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1695630007, now seen corresponding path program 1 times [2023-12-16 04:06:16,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:16,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085934247] [2023-12-16 04:06:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:16,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:16,698 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:16,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658329315] [2023-12-16 04:06:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:16,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:16,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:16,718 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 04:06:16,744 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 04:06:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:17,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:06:17,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-16 04:06:17,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:06:17,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085934247] [2023-12-16 04:06:17,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:17,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658329315] [2023-12-16 04:06:17,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658329315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:06:17,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:06:17,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:06:17,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274603372] [2023-12-16 04:06:17,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:06:17,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:06:17,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:17,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:06:17,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:06:17,131 INFO L87 Difference]: Start difference. First operand 535 states and 858 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:17,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:17,197 INFO L93 Difference]: Finished difference Result 1222 states and 1958 transitions. [2023-12-16 04:06:17,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:06:17,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-16 04:06:17,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:17,203 INFO L225 Difference]: With dead ends: 1222 [2023-12-16 04:06:17,203 INFO L226 Difference]: Without dead ends: 826 [2023-12-16 04:06:17,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 478 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 04:06:17,205 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 298 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:17,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 984 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:06:17,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2023-12-16 04:06:17,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 569. [2023-12-16 04:06:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 425 states have (on average 1.4917647058823529) internal successors, (634), 426 states have internal predecessors, (634), 140 states have call successors, (140), 3 states have call predecessors, (140), 3 states have return successors, (140), 139 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-16 04:06:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 914 transitions. [2023-12-16 04:06:17,245 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 914 transitions. Word has length 480 [2023-12-16 04:06:17,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:17,245 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 914 transitions. [2023-12-16 04:06:17,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 914 transitions. [2023-12-16 04:06:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-16 04:06:17,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:17,249 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:17,270 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 04:06:17,458 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 04:06:17,459 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:17,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:17,459 INFO L85 PathProgramCache]: Analyzing trace with hash 227598027, now seen corresponding path program 1 times [2023-12-16 04:06:17,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:17,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869996091] [2023-12-16 04:06:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:17,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:17,515 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:17,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877196464] [2023-12-16 04:06:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:17,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:17,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:17,516 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 04:06:17,518 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 04:06:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:17,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 04:06:17,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-16 04:06:18,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:06:18,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:18,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869996091] [2023-12-16 04:06:18,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:18,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877196464] [2023-12-16 04:06:18,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877196464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:06:18,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:06:18,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:06:18,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955250004] [2023-12-16 04:06:18,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:06:18,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:06:18,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:18,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:06:18,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:06:18,737 INFO L87 Difference]: Start difference. First operand 569 states and 914 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:19,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:19,110 INFO L93 Difference]: Finished difference Result 1489 states and 2375 transitions. [2023-12-16 04:06:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:06:19,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-16 04:06:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:19,116 INFO L225 Difference]: With dead ends: 1489 [2023-12-16 04:06:19,117 INFO L226 Difference]: Without dead ends: 1049 [2023-12-16 04:06:19,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:06:19,121 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 622 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:19,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1460 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:06:19,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2023-12-16 04:06:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 971. [2023-12-16 04:06:19,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 754 states have (on average 1.4986737400530503) internal successors, (1130), 756 states have internal predecessors, (1130), 211 states have call successors, (211), 5 states have call predecessors, (211), 5 states have return successors, (211), 209 states have call predecessors, (211), 211 states have call successors, (211) [2023-12-16 04:06:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1552 transitions. [2023-12-16 04:06:19,178 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1552 transitions. Word has length 480 [2023-12-16 04:06:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:19,179 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1552 transitions. [2023-12-16 04:06:19,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1552 transitions. [2023-12-16 04:06:19,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-16 04:06:19,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:19,182 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:19,206 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 04:06:19,392 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 04:06:19,393 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:19,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:19,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1640940407, now seen corresponding path program 1 times [2023-12-16 04:06:19,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:19,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542892791] [2023-12-16 04:06:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:19,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:19,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:19,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521347569] [2023-12-16 04:06:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:19,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:19,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:19,469 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 04:06:19,488 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 04:06:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:19,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 04:06:19,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-16 04:06:21,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:06:21,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:21,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542892791] [2023-12-16 04:06:21,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:21,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521347569] [2023-12-16 04:06:21,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521347569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:06:21,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:06:21,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:06:21,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077255036] [2023-12-16 04:06:21,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:06:21,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:06:21,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:06:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:06:21,186 INFO L87 Difference]: Start difference. First operand 971 states and 1552 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:21,539 INFO L93 Difference]: Finished difference Result 2156 states and 3440 transitions. [2023-12-16 04:06:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:06:21,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 480 [2023-12-16 04:06:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:21,546 INFO L225 Difference]: With dead ends: 2156 [2023-12-16 04:06:21,546 INFO L226 Difference]: Without dead ends: 1314 [2023-12-16 04:06:21,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:06:21,548 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 434 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:21,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1399 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:06:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2023-12-16 04:06:21,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 971. [2023-12-16 04:06:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 754 states have (on average 1.4960212201591512) internal successors, (1128), 756 states have internal predecessors, (1128), 211 states have call successors, (211), 5 states have call predecessors, (211), 5 states have return successors, (211), 209 states have call predecessors, (211), 211 states have call successors, (211) [2023-12-16 04:06:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1550 transitions. [2023-12-16 04:06:21,595 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1550 transitions. Word has length 480 [2023-12-16 04:06:21,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:21,595 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1550 transitions. [2023-12-16 04:06:21,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:21,596 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1550 transitions. [2023-12-16 04:06:21,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-16 04:06:21,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:21,598 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:21,625 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 04:06:21,808 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 04:06:21,808 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:21,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:21,809 INFO L85 PathProgramCache]: Analyzing trace with hash 238190539, now seen corresponding path program 1 times [2023-12-16 04:06:21,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:21,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123274530] [2023-12-16 04:06:21,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:21,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:21,849 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:21,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513474277] [2023-12-16 04:06:21,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:21,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:21,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:21,865 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 04:06:21,912 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 04:06:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:22,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:06:22,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 600 proven. 198 refuted. 0 times theorem prover too weak. 8586 trivial. 0 not checked. [2023-12-16 04:06:22,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:06:23,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 6 proven. 198 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-16 04:06:23,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:23,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123274530] [2023-12-16 04:06:23,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:23,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513474277] [2023-12-16 04:06:23,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513474277] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:06:23,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:06:23,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:06:23,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746658032] [2023-12-16 04:06:23,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:06:23,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:06:23,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:23,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:06:23,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:06:23,027 INFO L87 Difference]: Start difference. First operand 971 states and 1550 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) [2023-12-16 04:06:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:23,349 INFO L93 Difference]: Finished difference Result 1574 states and 2489 transitions. [2023-12-16 04:06:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:06:23,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) Word has length 480 [2023-12-16 04:06:23,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:23,353 INFO L225 Difference]: With dead ends: 1574 [2023-12-16 04:06:23,353 INFO L226 Difference]: Without dead ends: 732 [2023-12-16 04:06:23,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 952 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 04:06:23,355 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 400 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:23,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 812 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:06:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2023-12-16 04:06:23,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 684. [2023-12-16 04:06:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 468 states have (on average 1.4038461538461537) internal successors, (657), 468 states have internal predecessors, (657), 207 states have call successors, (207), 8 states have call predecessors, (207), 8 states have return successors, (207), 207 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-16 04:06:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1071 transitions. [2023-12-16 04:06:23,397 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1071 transitions. Word has length 480 [2023-12-16 04:06:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:23,398 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1071 transitions. [2023-12-16 04:06:23,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (135), 2 states have call predecessors, (135), 4 states have return successors, (136), 2 states have call predecessors, (136), 2 states have call successors, (136) [2023-12-16 04:06:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1071 transitions. [2023-12-16 04:06:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-16 04:06:23,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:23,401 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:23,409 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 04:06:23,609 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 04:06:23,609 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:23,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:23,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1357256262, now seen corresponding path program 1 times [2023-12-16 04:06:23,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:23,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834875405] [2023-12-16 04:06:23,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:23,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:23,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:23,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336954356] [2023-12-16 04:06:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:23,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:23,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:23,675 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 04:06:23,736 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 04:06:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:24,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:06:24,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 338 proven. 201 refuted. 0 times theorem prover too weak. 8845 trivial. 0 not checked. [2023-12-16 04:06:24,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:06:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 3 proven. 201 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-16 04:06:24,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:24,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834875405] [2023-12-16 04:06:24,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:24,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336954356] [2023-12-16 04:06:24,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336954356] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:06:24,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:06:24,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:06:24,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675690323] [2023-12-16 04:06:24,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:06:24,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:06:24,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:24,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:06:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:06:24,833 INFO L87 Difference]: Start difference. First operand 684 states and 1071 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) [2023-12-16 04:06:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:25,208 INFO L93 Difference]: Finished difference Result 1251 states and 1954 transitions. [2023-12-16 04:06:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:06:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) Word has length 481 [2023-12-16 04:06:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:25,212 INFO L225 Difference]: With dead ends: 1251 [2023-12-16 04:06:25,212 INFO L226 Difference]: Without dead ends: 700 [2023-12-16 04:06:25,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 954 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 04:06:25,214 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 186 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:25,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 797 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:06:25,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-16 04:06:25,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 688. [2023-12-16 04:06:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 471 states have (on average 1.3970276008492568) internal successors, (658), 471 states have internal predecessors, (658), 207 states have call successors, (207), 9 states have call predecessors, (207), 9 states have return successors, (207), 207 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-16 04:06:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1072 transitions. [2023-12-16 04:06:25,270 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1072 transitions. Word has length 481 [2023-12-16 04:06:25,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:25,271 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 1072 transitions. [2023-12-16 04:06:25,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 2 states have call predecessors, (137), 2 states have call successors, (137) [2023-12-16 04:06:25,271 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1072 transitions. [2023-12-16 04:06:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-16 04:06:25,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:25,274 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:25,284 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 04:06:25,482 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 04:06:25,483 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:25,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:25,483 INFO L85 PathProgramCache]: Analyzing trace with hash -677984008, now seen corresponding path program 1 times [2023-12-16 04:06:25,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:25,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821004154] [2023-12-16 04:06:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:25,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:25,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906100077] [2023-12-16 04:06:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:25,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:25,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:25,529 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 04:06:25,563 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 04:06:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:25,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:06:25,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 2954 proven. 165 refuted. 0 times theorem prover too weak. 6265 trivial. 0 not checked. [2023-12-16 04:06:26,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:06:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 39 proven. 165 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-16 04:06:26,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:26,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821004154] [2023-12-16 04:06:26,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:26,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906100077] [2023-12-16 04:06:26,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906100077] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:06:26,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:06:26,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 04:06:26,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621596041] [2023-12-16 04:06:26,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:06:26,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:06:26,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:26,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:06:26,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:06:26,549 INFO L87 Difference]: Start difference. First operand 688 states and 1072 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-16 04:06:26,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:26,846 INFO L93 Difference]: Finished difference Result 1269 states and 1965 transitions. [2023-12-16 04:06:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:06:26,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 481 [2023-12-16 04:06:26,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:26,850 INFO L225 Difference]: With dead ends: 1269 [2023-12-16 04:06:26,850 INFO L226 Difference]: Without dead ends: 718 [2023-12-16 04:06:26,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 954 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 04:06:26,852 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 198 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:26,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 804 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:06:26,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-12-16 04:06:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 700. [2023-12-16 04:06:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 480 states have (on average 1.3854166666666667) internal successors, (665), 480 states have internal predecessors, (665), 207 states have call successors, (207), 12 states have call predecessors, (207), 12 states have return successors, (207), 207 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-16 04:06:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1079 transitions. [2023-12-16 04:06:26,892 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1079 transitions. Word has length 481 [2023-12-16 04:06:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:26,892 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1079 transitions. [2023-12-16 04:06:26,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-12-16 04:06:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1079 transitions. [2023-12-16 04:06:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-16 04:06:26,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:26,895 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:26,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-16 04:06:27,103 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 04:06:27,103 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:27,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:27,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1588397178, now seen corresponding path program 1 times [2023-12-16 04:06:27,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:27,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857580844] [2023-12-16 04:06:27,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:27,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:27,147 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:27,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556372851] [2023-12-16 04:06:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:27,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:27,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:27,148 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 04:06:27,163 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 04:06:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:27,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 04:06:27,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-12-16 04:06:27,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:06:27,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:27,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857580844] [2023-12-16 04:06:27,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:27,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556372851] [2023-12-16 04:06:27,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556372851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:06:27,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:06:27,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:06:27,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345855314] [2023-12-16 04:06:27,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:06:27,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:06:27,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:06:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:06:27,612 INFO L87 Difference]: Start difference. First operand 700 states and 1079 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:27,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:27,747 INFO L93 Difference]: Finished difference Result 1281 states and 1974 transitions. [2023-12-16 04:06:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:06:27,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 481 [2023-12-16 04:06:27,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:27,752 INFO L225 Difference]: With dead ends: 1281 [2023-12-16 04:06:27,752 INFO L226 Difference]: Without dead ends: 995 [2023-12-16 04:06:27,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 479 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 04:06:27,753 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 543 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:27,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1540 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:06:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2023-12-16 04:06:27,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 720. [2023-12-16 04:06:27,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 497 states have (on average 1.3782696177062375) internal successors, (685), 497 states have internal predecessors, (685), 207 states have call successors, (207), 15 states have call predecessors, (207), 15 states have return successors, (207), 207 states have call predecessors, (207), 207 states have call successors, (207) [2023-12-16 04:06:27,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1099 transitions. [2023-12-16 04:06:27,821 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1099 transitions. Word has length 481 [2023-12-16 04:06:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:27,823 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 1099 transitions. [2023-12-16 04:06:27,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-12-16 04:06:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1099 transitions. [2023-12-16 04:06:27,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-16 04:06:27,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:27,830 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:27,838 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 04:06:28,038 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 04:06:28,038 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:28,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash 39517742, now seen corresponding path program 1 times [2023-12-16 04:06:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:28,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137141804] [2023-12-16 04:06:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:28,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:28,077 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:28,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94476239] [2023-12-16 04:06:28,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:28,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:28,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:28,079 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 04:06:28,081 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 04:06:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:28,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 04:06:28,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4208 proven. 66 refuted. 0 times theorem prover too weak. 5110 trivial. 0 not checked. [2023-12-16 04:06:28,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:06:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 138 proven. 66 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-16 04:06:29,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:29,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137141804] [2023-12-16 04:06:29,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:29,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94476239] [2023-12-16 04:06:29,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94476239] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:06:29,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:06:29,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-16 04:06:29,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596549590] [2023-12-16 04:06:29,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:06:29,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 04:06:29,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:29,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 04:06:29,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-16 04:06:29,056 INFO L87 Difference]: Start difference. First operand 720 states and 1099 transitions. Second operand has 13 states, 13 states have (on average 15.692307692307692) internal successors, (204), 13 states have internal predecessors, (204), 3 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) [2023-12-16 04:06:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:30,796 INFO L93 Difference]: Finished difference Result 3305 states and 5040 transitions. [2023-12-16 04:06:30,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-16 04:06:30,796 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.692307692307692) internal successors, (204), 13 states have internal predecessors, (204), 3 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) Word has length 481 [2023-12-16 04:06:30,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:30,806 INFO L225 Difference]: With dead ends: 3305 [2023-12-16 04:06:30,806 INFO L226 Difference]: Without dead ends: 2730 [2023-12-16 04:06:30,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 951 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 04:06:30,809 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1745 mSDsluCounter, 3317 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 3816 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:30,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1794 Valid, 3816 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 04:06:30,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2023-12-16 04:06:30,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 1331. [2023-12-16 04:06:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 955 states have (on average 1.4010471204188482) internal successors, (1338), 955 states have internal predecessors, (1338), 345 states have call successors, (345), 30 states have call predecessors, (345), 30 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) [2023-12-16 04:06:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2028 transitions. [2023-12-16 04:06:30,965 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2028 transitions. Word has length 481 [2023-12-16 04:06:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:30,965 INFO L495 AbstractCegarLoop]: Abstraction has 1331 states and 2028 transitions. [2023-12-16 04:06:30,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.692307692307692) internal successors, (204), 13 states have internal predecessors, (204), 3 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) [2023-12-16 04:06:30,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2028 transitions. [2023-12-16 04:06:30,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-16 04:06:30,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:30,968 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:30,977 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 04:06:31,176 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 04:06:31,177 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:31,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:31,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1577857772, now seen corresponding path program 1 times [2023-12-16 04:06:31,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:31,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543864200] [2023-12-16 04:06:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:31,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:31,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:31,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089798365] [2023-12-16 04:06:31,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:31,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:31,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:31,219 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:06:31,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 04:06:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:31,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 04:06:31,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4454 proven. 75 refuted. 0 times theorem prover too weak. 4855 trivial. 0 not checked. [2023-12-16 04:06:31,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:06:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 129 proven. 75 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-12-16 04:06:32,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:06:32,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543864200] [2023-12-16 04:06:32,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:06:32,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089798365] [2023-12-16 04:06:32,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089798365] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:06:32,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:06:32,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-16 04:06:32,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990453316] [2023-12-16 04:06:32,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:06:32,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:06:32,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:06:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:06:32,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:06:32,389 INFO L87 Difference]: Start difference. First operand 1331 states and 2028 transitions. Second operand has 10 states, 10 states have (on average 23.7) internal successors, (237), 10 states have internal predecessors, (237), 3 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2023-12-16 04:06:37,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 04:06:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:06:37,503 INFO L93 Difference]: Finished difference Result 3161 states and 4719 transitions. [2023-12-16 04:06:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 04:06:37,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.7) internal successors, (237), 10 states have internal predecessors, (237), 3 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) Word has length 481 [2023-12-16 04:06:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:06:37,514 INFO L225 Difference]: With dead ends: 3161 [2023-12-16 04:06:37,514 INFO L226 Difference]: Without dead ends: 2550 [2023-12-16 04:06:37,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 953 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2023-12-16 04:06:37,541 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1250 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 586 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-16 04:06:37,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 1556 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 926 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-12-16 04:06:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2023-12-16 04:06:37,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 1893. [2023-12-16 04:06:37,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1320 states have (on average 1.356818181818182) internal successors, (1791), 1324 states have internal predecessors, (1791), 517 states have call successors, (517), 55 states have call predecessors, (517), 55 states have return successors, (517), 513 states have call predecessors, (517), 517 states have call successors, (517) [2023-12-16 04:06:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2825 transitions. [2023-12-16 04:06:37,691 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2825 transitions. Word has length 481 [2023-12-16 04:06:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:06:37,692 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 2825 transitions. [2023-12-16 04:06:37,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.7) internal successors, (237), 10 states have internal predecessors, (237), 3 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2023-12-16 04:06:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2825 transitions. [2023-12-16 04:06:37,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-12-16 04:06:37,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:06:37,696 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:37,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-16 04:06:37,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 04:06:37,905 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:06:37,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:06:37,905 INFO L85 PathProgramCache]: Analyzing trace with hash 569028819, now seen corresponding path program 1 times [2023-12-16 04:06:37,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:06:37,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987444912] [2023-12-16 04:06:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:37,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:06:37,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:06:37,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990586548] [2023-12-16 04:06:37,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:06:37,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:06:37,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:06:37,969 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:06:38,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 04:06:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:06:38,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 04:06:38,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:06:47,737 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-16 04:06:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 5667 proven. 204 refuted. 0 times theorem prover too weak. 3513 trivial. 0 not checked. [2023-12-16 04:06:48,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:07:04,832 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-16 04:07:12,855 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-16 04:07:12,955 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 04:07:12,955 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:07:13,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-16 04:07:14,161 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 04:07:14,169 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:07:14,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 04:07:14,169 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 483 with TraceHistMax 69,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-16 04:07:14,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 04:07:14,173 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:07:14,175 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:07:14,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:07:14 BoogieIcfgContainer [2023-12-16 04:07:14,176 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:07:14,176 INFO L158 Benchmark]: Toolchain (without parser) took 68031.51ms. Allocated memory was 186.6MB in the beginning and 879.8MB in the end (delta: 693.1MB). Free memory was 119.3MB in the beginning and 511.5MB in the end (delta: -392.2MB). Peak memory consumption was 302.7MB. Max. memory is 8.0GB. [2023-12-16 04:07:14,177 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory was 135.9MB in the beginning and 135.8MB in the end (delta: 86.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:07:14,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.68ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 119.1MB in the beginning and 169.8MB in the end (delta: -50.7MB). Peak memory consumption was 20.5MB. Max. memory is 8.0GB. [2023-12-16 04:07:14,177 INFO L158 Benchmark]: Boogie Procedure Inliner took 152.77ms. Allocated memory is still 224.4MB. Free memory was 169.8MB in the beginning and 149.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-16 04:07:14,177 INFO L158 Benchmark]: Boogie Preprocessor took 155.90ms. Allocated memory is still 224.4MB. Free memory was 149.3MB in the beginning and 163.6MB in the end (delta: -14.3MB). Peak memory consumption was 47.1MB. Max. memory is 8.0GB. [2023-12-16 04:07:14,177 INFO L158 Benchmark]: RCFGBuilder took 1047.11ms. Allocated memory was 224.4MB in the beginning and 308.3MB in the end (delta: 83.9MB). Free memory was 163.1MB in the beginning and 221.8MB in the end (delta: -58.7MB). Peak memory consumption was 63.0MB. Max. memory is 8.0GB. [2023-12-16 04:07:14,177 INFO L158 Benchmark]: TraceAbstraction took 66182.71ms. Allocated memory was 308.3MB in the beginning and 879.8MB in the end (delta: 571.5MB). Free memory was 220.7MB in the beginning and 511.5MB in the end (delta: -290.8MB). Peak memory consumption was 281.2MB. Max. memory is 8.0GB. [2023-12-16 04:07:14,178 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 186.6MB. Free memory was 135.9MB in the beginning and 135.8MB in the end (delta: 86.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 487.68ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 119.1MB in the beginning and 169.8MB in the end (delta: -50.7MB). Peak memory consumption was 20.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 152.77ms. Allocated memory is still 224.4MB. Free memory was 169.8MB in the beginning and 149.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 155.90ms. Allocated memory is still 224.4MB. Free memory was 149.3MB in the beginning and 163.6MB in the end (delta: -14.3MB). Peak memory consumption was 47.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1047.11ms. Allocated memory was 224.4MB in the beginning and 308.3MB in the end (delta: 83.9MB). Free memory was 163.1MB in the beginning and 221.8MB in the end (delta: -58.7MB). Peak memory consumption was 63.0MB. Max. memory is 8.0GB. * TraceAbstraction took 66182.71ms. Allocated memory was 308.3MB in the beginning and 879.8MB in the end (delta: 571.5MB). Free memory was 220.7MB in the beginning and 511.5MB in the end (delta: -290.8MB). Peak memory consumption was 281.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 483 with TraceHistMax 69,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 248 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.1s, OverallIterations: 17, TraceHistogramMax: 69, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 6748 SdHoareTripleChecker+Valid, 8.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6598 mSDsluCounter, 19994 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13067 mSDsCounter, 1594 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4583 IncrementalHoareTripleChecker+Invalid, 6178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1594 mSolverCounterUnsat, 6927 mSDtfsCounter, 4583 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10135 GetRequests, 10013 SyntacticMatches, 4 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1893occurred in iteration=16, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 16 MinimizatonAttempts, 3472 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 8161 NumberOfCodeBlocks, 8161 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 10065 ConstructedInterpolants, 0 QuantifiedInterpolants, 29133 SizeOfPredicates, 34 NumberOfNonLiveVariables, 20292 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 21 InterpolantComputations, 11 PerfectInterpolantSequences, 195654/197064 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