/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_fillercode_fillercodesize_ps-cn-500_file-65.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 03:00:47,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 03:00:47,117 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 03:00:47,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 03:00:47,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 03:00:47,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 03:00:47,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 03:00:47,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 03:00:47,176 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 03:00:47,180 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 03:00:47,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 03:00:47,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 03:00:47,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 03:00:47,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 03:00:47,182 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 03:00:47,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 03:00:47,182 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 03:00:47,182 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 03:00:47,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 03:00:47,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 03:00:47,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 03:00:47,183 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 03:00:47,183 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 03:00:47,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 03:00:47,183 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 03:00:47,183 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 03:00:47,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 03:00:47,184 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 03:00:47,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 03:00:47,184 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 03:00:47,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 03:00:47,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 03:00:47,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:00:47,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 03:00:47,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 03:00:47,185 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 03:00:47,185 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 03:00:47,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 03:00:47,185 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 03:00:47,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 03:00:47,186 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 03:00:47,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 03:00:47,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 03:00:47,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 03:00:47,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 03:00:47,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 03:00:47,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 03:00:47,485 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 03:00:47,486 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 03:00:47,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-65.i [2023-12-16 03:00:48,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 03:00:48,998 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 03:00:48,998 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-65.i [2023-12-16 03:00:49,008 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181a8a343/9b63e50032e646b18ffc4932f2a5850e/FLAG45b47d10a [2023-12-16 03:00:49,020 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181a8a343/9b63e50032e646b18ffc4932f2a5850e [2023-12-16 03:00:49,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 03:00:49,023 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 03:00:49,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 03:00:49,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 03:00:49,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 03:00:49,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:49,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b98921f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49, skipping insertion in model container [2023-12-16 03:00:49,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:49,083 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 03:00:49,262 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-65.i[916,929] [2023-12-16 03:00:49,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:00:49,627 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 03:00:49,634 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-65.i[916,929] [2023-12-16 03:00:49,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:00:49,807 INFO L206 MainTranslator]: Completed translation [2023-12-16 03:00:49,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49 WrapperNode [2023-12-16 03:00:49,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 03:00:49,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 03:00:49,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 03:00:49,817 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 03:00:49,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:49,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:49,919 INFO L138 Inliner]: procedures = 26, calls = 116, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 779 [2023-12-16 03:00:49,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 03:00:49,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 03:00:49,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 03:00:49,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 03:00:49,928 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:49,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:49,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:49,973 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 03:00:49,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:49,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:49,995 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:49,999 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:50,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:50,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:50,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 03:00:50,038 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 03:00:50,038 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 03:00:50,038 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 03:00:50,039 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (1/1) ... [2023-12-16 03:00:50,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:00:50,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:50,064 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 03:00:50,074 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 03:00:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 03:00:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 03:00:50,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 03:00:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 03:00:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 03:00:50,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 03:00:50,229 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 03:00:50,231 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 03:00:50,835 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 03:00:50,879 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 03:00:50,879 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 03:00:50,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:00:50 BoogieIcfgContainer [2023-12-16 03:00:50,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 03:00:50,882 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 03:00:50,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 03:00:50,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 03:00:50,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:00:49" (1/3) ... [2023-12-16 03:00:50,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e4f65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:00:50, skipping insertion in model container [2023-12-16 03:00:50,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:00:49" (2/3) ... [2023-12-16 03:00:50,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e4f65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:00:50, skipping insertion in model container [2023-12-16 03:00:50,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:00:50" (3/3) ... [2023-12-16 03:00:50,886 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-65.i [2023-12-16 03:00:50,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 03:00:50,899 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 03:00:50,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 03:00:50,954 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;@57758ce1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 03:00:50,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 03:00:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 196 states have (on average 1.5561224489795917) internal successors, (305), 197 states have internal predecessors, (305), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-12-16 03:00:50,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-12-16 03:00:50,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:50,997 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:50,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:51,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:51,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1980820238, now seen corresponding path program 1 times [2023-12-16 03:00:51,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:51,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107046173] [2023-12-16 03:00:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:51,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:51,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:51,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107046173] [2023-12-16 03:00:51,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 03:00:51,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364228376] [2023-12-16 03:00:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:51,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:51,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:51,377 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 03:00:51,389 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 03:00:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:51,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 03:00:51,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 20808 trivial. 0 not checked. [2023-12-16 03:00:51,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:51,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364228376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:51,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:51,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:00:51,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615597172] [2023-12-16 03:00:51,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:51,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 03:00:51,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:51,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 03:00:51,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:00:51,916 INFO L87 Difference]: Start difference. First operand has 302 states, 196 states have (on average 1.5561224489795917) internal successors, (305), 197 states have internal predecessors, (305), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 2 states, 2 states have (on average 82.0) internal successors, (164), 2 states have internal predecessors, (164), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-16 03:00:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:51,977 INFO L93 Difference]: Finished difference Result 601 states and 1123 transitions. [2023-12-16 03:00:51,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 03:00:51,979 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 82.0) internal successors, (164), 2 states have internal predecessors, (164), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) Word has length 674 [2023-12-16 03:00:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:51,991 INFO L225 Difference]: With dead ends: 601 [2023-12-16 03:00:51,991 INFO L226 Difference]: Without dead ends: 300 [2023-12-16 03:00:51,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 673 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 03:00:52,001 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:52,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 500 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:00:52,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-16 03:00:52,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-12-16 03:00:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 195 states have (on average 1.523076923076923) internal successors, (297), 195 states have internal predecessors, (297), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-12-16 03:00:52,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 503 transitions. [2023-12-16 03:00:52,078 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 503 transitions. Word has length 674 [2023-12-16 03:00:52,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:52,078 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 503 transitions. [2023-12-16 03:00:52,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 82.0) internal successors, (164), 2 states have internal predecessors, (164), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) [2023-12-16 03:00:52,079 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 503 transitions. [2023-12-16 03:00:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-12-16 03:00:52,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:52,091 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:52,100 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 03:00:52,299 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 03:00:52,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:52,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash 206434990, now seen corresponding path program 1 times [2023-12-16 03:00:52,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:52,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296343692] [2023-12-16 03:00:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:52,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:52,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:52,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787106058] [2023-12-16 03:00:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:52,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:52,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:52,449 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 03:00:52,479 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 03:00:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:52,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:00:52,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-16 03:00:52,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:52,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:52,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296343692] [2023-12-16 03:00:52,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:52,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787106058] [2023-12-16 03:00:52,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787106058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:52,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:52,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:00:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384090222] [2023-12-16 03:00:52,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:52,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:00:52,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:52,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:00:52,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:00:52,921 INFO L87 Difference]: Start difference. First operand 300 states and 503 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:00:53,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:53,019 INFO L93 Difference]: Finished difference Result 763 states and 1286 transitions. [2023-12-16 03:00:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:00:53,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 674 [2023-12-16 03:00:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:53,023 INFO L225 Difference]: With dead ends: 763 [2023-12-16 03:00:53,023 INFO L226 Difference]: Without dead ends: 464 [2023-12-16 03:00:53,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 672 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 03:00:53,025 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 261 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:53,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1177 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:00:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-12-16 03:00:53,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 461. [2023-12-16 03:00:53,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 331 states have (on average 1.5740181268882176) internal successors, (521), 332 states have internal predecessors, (521), 127 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (127), 126 states have call predecessors, (127), 127 states have call successors, (127) [2023-12-16 03:00:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 775 transitions. [2023-12-16 03:00:53,065 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 775 transitions. Word has length 674 [2023-12-16 03:00:53,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:53,068 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 775 transitions. [2023-12-16 03:00:53,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:00:53,069 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 775 transitions. [2023-12-16 03:00:53,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-12-16 03:00:53,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:53,077 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:53,086 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 03:00:53,286 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 03:00:53,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:53,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:53,287 INFO L85 PathProgramCache]: Analyzing trace with hash 792091552, now seen corresponding path program 1 times [2023-12-16 03:00:53,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:53,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526296140] [2023-12-16 03:00:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:53,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:53,361 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:53,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43671150] [2023-12-16 03:00:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:53,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:53,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:53,363 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 03:00:53,404 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 03:00:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:53,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:00:53,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-16 03:00:53,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:53,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:53,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526296140] [2023-12-16 03:00:53,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:53,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43671150] [2023-12-16 03:00:53,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43671150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:53,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:53,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:00:53,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229643436] [2023-12-16 03:00:53,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:53,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:00:53,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:53,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:00:53,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:00:53,840 INFO L87 Difference]: Start difference. First operand 461 states and 775 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:00:53,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:53,911 INFO L93 Difference]: Finished difference Result 1368 states and 2299 transitions. [2023-12-16 03:00:53,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:00:53,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 675 [2023-12-16 03:00:53,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:53,917 INFO L225 Difference]: With dead ends: 1368 [2023-12-16 03:00:53,918 INFO L226 Difference]: Without dead ends: 908 [2023-12-16 03:00:53,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 673 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 03:00:53,920 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 477 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:53,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1300 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:00:53,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2023-12-16 03:00:53,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 906. [2023-12-16 03:00:53,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 647 states have (on average 1.5486862442040186) internal successors, (1002), 649 states have internal predecessors, (1002), 254 states have call successors, (254), 4 states have call predecessors, (254), 4 states have return successors, (254), 252 states have call predecessors, (254), 254 states have call successors, (254) [2023-12-16 03:00:53,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1510 transitions. [2023-12-16 03:00:53,988 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1510 transitions. Word has length 675 [2023-12-16 03:00:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:53,989 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1510 transitions. [2023-12-16 03:00:53,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:00:53,990 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1510 transitions. [2023-12-16 03:00:53,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-12-16 03:00:53,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:53,995 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:54,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 03:00:54,203 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 03:00:54,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:54,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:54,206 INFO L85 PathProgramCache]: Analyzing trace with hash 192803364, now seen corresponding path program 1 times [2023-12-16 03:00:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:54,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341385279] [2023-12-16 03:00:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:54,261 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:54,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868717591] [2023-12-16 03:00:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:54,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:54,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:54,263 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 03:00:54,304 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 03:00:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:54,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:00:54,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-16 03:00:54,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:54,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:54,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341385279] [2023-12-16 03:00:54,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:54,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868717591] [2023-12-16 03:00:54,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868717591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:54,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:54,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:00:54,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662466909] [2023-12-16 03:00:54,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:54,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:00:54,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:54,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:00:54,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:00:54,652 INFO L87 Difference]: Start difference. First operand 906 states and 1510 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:00:54,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:54,866 INFO L93 Difference]: Finished difference Result 2490 states and 4161 transitions. [2023-12-16 03:00:54,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 03:00:54,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 675 [2023-12-16 03:00:54,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:54,912 INFO L225 Difference]: With dead ends: 2490 [2023-12-16 03:00:54,912 INFO L226 Difference]: Without dead ends: 1558 [2023-12-16 03:00:54,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 673 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 03:00:54,914 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 1024 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:54,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 1549 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:00:54,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2023-12-16 03:00:55,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1548. [2023-12-16 03:00:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1197 states have (on average 1.5505430242272347) internal successors, (1856), 1203 states have internal predecessors, (1856), 342 states have call successors, (342), 8 states have call predecessors, (342), 8 states have return successors, (342), 336 states have call predecessors, (342), 342 states have call successors, (342) [2023-12-16 03:00:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2540 transitions. [2023-12-16 03:00:55,037 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2540 transitions. Word has length 675 [2023-12-16 03:00:55,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:55,039 INFO L495 AbstractCegarLoop]: Abstraction has 1548 states and 2540 transitions. [2023-12-16 03:00:55,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:00:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2540 transitions. [2023-12-16 03:00:55,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-12-16 03:00:55,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:55,045 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:55,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 03:00:55,253 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 03:00:55,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:55,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:55,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1628782944, now seen corresponding path program 1 times [2023-12-16 03:00:55,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:55,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471214075] [2023-12-16 03:00:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:55,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:55,313 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:55,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116287725] [2023-12-16 03:00:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:55,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:55,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:55,324 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 03:00:55,366 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 03:00:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:55,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:00:55,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-16 03:00:55,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:55,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:55,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471214075] [2023-12-16 03:00:55,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:55,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116287725] [2023-12-16 03:00:55,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116287725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:55,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:55,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:00:55,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929681501] [2023-12-16 03:00:55,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:55,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:00:55,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:55,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:00:55,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:00:55,747 INFO L87 Difference]: Start difference. First operand 1548 states and 2540 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:00:55,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:55,838 INFO L93 Difference]: Finished difference Result 3265 states and 5361 transitions. [2023-12-16 03:00:55,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:00:55,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 675 [2023-12-16 03:00:55,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:55,846 INFO L225 Difference]: With dead ends: 3265 [2023-12-16 03:00:55,846 INFO L226 Difference]: Without dead ends: 1644 [2023-12-16 03:00:55,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 673 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 03:00:55,850 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 241 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:55,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1129 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:00:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2023-12-16 03:00:55,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1374. [2023-12-16 03:00:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 1111 states have (on average 1.5643564356435644) internal successors, (1738), 1113 states have internal predecessors, (1738), 254 states have call successors, (254), 8 states have call predecessors, (254), 8 states have return successors, (254), 252 states have call predecessors, (254), 254 states have call successors, (254) [2023-12-16 03:00:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 2246 transitions. [2023-12-16 03:00:55,957 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 2246 transitions. Word has length 675 [2023-12-16 03:00:55,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:55,958 INFO L495 AbstractCegarLoop]: Abstraction has 1374 states and 2246 transitions. [2023-12-16 03:00:55,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:00:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 2246 transitions. [2023-12-16 03:00:55,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-12-16 03:00:55,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:55,963 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:55,985 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 03:00:56,172 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 03:00:56,173 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:56,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash -664982692, now seen corresponding path program 1 times [2023-12-16 03:00:56,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:56,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125697040] [2023-12-16 03:00:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:56,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:56,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:56,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383527754] [2023-12-16 03:00:56,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:56,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:56,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:56,218 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 03:00:56,224 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 03:00:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:56,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:00:56,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-16 03:00:56,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:56,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:56,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125697040] [2023-12-16 03:00:56,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:56,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383527754] [2023-12-16 03:00:56,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383527754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:56,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:56,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 03:00:56,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753632227] [2023-12-16 03:00:56,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:56,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 03:00:56,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:56,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 03:00:56,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:00:56,705 INFO L87 Difference]: Start difference. First operand 1374 states and 2246 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:00:57,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:57,716 INFO L93 Difference]: Finished difference Result 5338 states and 8682 transitions. [2023-12-16 03:00:57,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:00:57,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 675 [2023-12-16 03:00:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:57,729 INFO L225 Difference]: With dead ends: 5338 [2023-12-16 03:00:57,729 INFO L226 Difference]: Without dead ends: 3785 [2023-12-16 03:00:57,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 03:00:57,733 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 1916 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 3754 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:57,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 3754 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 03:00:57,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2023-12-16 03:00:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3113. [2023-12-16 03:00:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3113 states, 2588 states have (on average 1.5695517774343122) internal successors, (4062), 2592 states have internal predecessors, (4062), 508 states have call successors, (508), 16 states have call predecessors, (508), 16 states have return successors, (508), 504 states have call predecessors, (508), 508 states have call successors, (508) [2023-12-16 03:00:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3113 states to 3113 states and 5078 transitions. [2023-12-16 03:00:57,876 INFO L78 Accepts]: Start accepts. Automaton has 3113 states and 5078 transitions. Word has length 675 [2023-12-16 03:00:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:57,877 INFO L495 AbstractCegarLoop]: Abstraction has 3113 states and 5078 transitions. [2023-12-16 03:00:57,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:00:57,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3113 states and 5078 transitions. [2023-12-16 03:00:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2023-12-16 03:00:57,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:57,882 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:57,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 03:00:58,088 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 03:00:58,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:00:58,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:00:58,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1770084360, now seen corresponding path program 1 times [2023-12-16 03:00:58,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:00:58,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155434746] [2023-12-16 03:00:58,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:58,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:00:58,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:00:58,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088855435] [2023-12-16 03:00:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:00:58,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:00:58,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:00:58,130 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 03:00:58,139 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 03:00:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:00:58,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 03:00:58,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:00:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-16 03:00:58,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:00:58,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:00:58,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155434746] [2023-12-16 03:00:58,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:00:58,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088855435] [2023-12-16 03:00:58,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088855435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:00:58,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:00:58,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:00:58,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473883613] [2023-12-16 03:00:58,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:00:58,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:00:58,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:00:58,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:00:58,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:00:58,502 INFO L87 Difference]: Start difference. First operand 3113 states and 5078 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:00:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:00:59,384 INFO L93 Difference]: Finished difference Result 9455 states and 15194 transitions. [2023-12-16 03:00:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 03:00:59,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 676 [2023-12-16 03:00:59,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:00:59,432 INFO L225 Difference]: With dead ends: 9455 [2023-12-16 03:00:59,433 INFO L226 Difference]: Without dead ends: 6343 [2023-12-16 03:00:59,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 674 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 03:00:59,470 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 725 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 03:00:59,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1810 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 03:00:59,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2023-12-16 03:00:59,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 4501. [2023-12-16 03:00:59,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4501 states, 3556 states have (on average 1.5247469066366703) internal successors, (5422), 3568 states have internal predecessors, (5422), 912 states have call successors, (912), 32 states have call predecessors, (912), 32 states have return successors, (912), 900 states have call predecessors, (912), 912 states have call successors, (912) [2023-12-16 03:00:59,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4501 states to 4501 states and 7246 transitions. [2023-12-16 03:00:59,868 INFO L78 Accepts]: Start accepts. Automaton has 4501 states and 7246 transitions. Word has length 676 [2023-12-16 03:00:59,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:00:59,868 INFO L495 AbstractCegarLoop]: Abstraction has 4501 states and 7246 transitions. [2023-12-16 03:00:59,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:00:59,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4501 states and 7246 transitions. [2023-12-16 03:00:59,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2023-12-16 03:00:59,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:00:59,875 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:59,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-16 03:01:00,083 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 03:01:00,084 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:01:00,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:01:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1138679542, now seen corresponding path program 1 times [2023-12-16 03:01:00,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:01:00,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127137768] [2023-12-16 03:01:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:00,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:01:00,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:01:00,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258047270] [2023-12-16 03:01:00,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:00,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:01:00,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:01:00,138 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 03:01:00,165 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 03:01:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:01:00,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:01:00,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:01:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 7638 proven. 234 refuted. 0 times theorem prover too weak. 13140 trivial. 0 not checked. [2023-12-16 03:01:01,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:01:01,570 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 72 proven. 234 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-12-16 03:01:01,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:01:01,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127137768] [2023-12-16 03:01:01,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:01:01,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258047270] [2023-12-16 03:01:01,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258047270] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:01:01,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:01:01,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:01:01,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206111431] [2023-12-16 03:01:01,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:01:01,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:01:01,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:01:01,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:01:01,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:01:01,573 INFO L87 Difference]: Start difference. First operand 4501 states and 7246 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 2 states have call predecessors, (182), 2 states have call successors, (182) [2023-12-16 03:01:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:01:02,053 INFO L93 Difference]: Finished difference Result 7915 states and 12704 transitions. [2023-12-16 03:01:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 03:01:02,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 2 states have call predecessors, (182), 2 states have call successors, (182) Word has length 676 [2023-12-16 03:01:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:01:02,069 INFO L225 Difference]: With dead ends: 7915 [2023-12-16 03:01:02,069 INFO L226 Difference]: Without dead ends: 3345 [2023-12-16 03:01:02,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1354 GetRequests, 1344 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:01:02,079 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 252 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:01:02,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 904 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:01:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2023-12-16 03:01:02,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3181. [2023-12-16 03:01:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3181 states, 2332 states have (on average 1.4532590051457976) internal successors, (3389), 2340 states have internal predecessors, (3389), 816 states have call successors, (816), 32 states have call predecessors, (816), 32 states have return successors, (816), 808 states have call predecessors, (816), 816 states have call successors, (816) [2023-12-16 03:01:02,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 5021 transitions. [2023-12-16 03:01:02,372 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 5021 transitions. Word has length 676 [2023-12-16 03:01:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:01:02,372 INFO L495 AbstractCegarLoop]: Abstraction has 3181 states and 5021 transitions. [2023-12-16 03:01:02,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 2 states have call predecessors, (182), 2 states have call successors, (182) [2023-12-16 03:01:02,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 5021 transitions. [2023-12-16 03:01:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2023-12-16 03:01:02,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:01:02,378 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:02,401 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 03:01:02,586 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 03:01:02,586 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:01:02,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:01:02,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1245199038, now seen corresponding path program 1 times [2023-12-16 03:01:02,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:01:02,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408069486] [2023-12-16 03:01:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:02,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:01:02,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:01:02,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267408456] [2023-12-16 03:01:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:02,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:01:02,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:01:02,634 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 03:01:02,673 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 03:01:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:01:03,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 1614 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:01:03,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:01:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10266 proven. 180 refuted. 0 times theorem prover too weak. 10566 trivial. 0 not checked. [2023-12-16 03:01:03,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:01:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 126 proven. 180 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-12-16 03:01:03,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:01:03,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408069486] [2023-12-16 03:01:03,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:01:03,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267408456] [2023-12-16 03:01:03,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267408456] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:01:03,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:01:03,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 03:01:03,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483514632] [2023-12-16 03:01:03,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:01:03,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 03:01:03,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:01:03,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 03:01:03,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 03:01:03,726 INFO L87 Difference]: Start difference. First operand 3181 states and 5021 transitions. Second operand has 8 states, 8 states have (on average 28.375) internal successors, (227), 8 states have internal predecessors, (227), 3 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) [2023-12-16 03:01:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:01:04,248 INFO L93 Difference]: Finished difference Result 6441 states and 10113 transitions. [2023-12-16 03:01:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 03:01:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 28.375) internal successors, (227), 8 states have internal predecessors, (227), 3 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) Word has length 676 [2023-12-16 03:01:04,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:01:04,261 INFO L225 Difference]: With dead ends: 6441 [2023-12-16 03:01:04,261 INFO L226 Difference]: Without dead ends: 3261 [2023-12-16 03:01:04,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1354 GetRequests, 1344 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 03:01:04,269 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 273 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:01:04,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 905 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:01:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2023-12-16 03:01:04,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 3213. [2023-12-16 03:01:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3213 states, 2356 states have (on average 1.4426994906621393) internal successors, (3399), 2364 states have internal predecessors, (3399), 816 states have call successors, (816), 40 states have call predecessors, (816), 40 states have return successors, (816), 808 states have call predecessors, (816), 816 states have call successors, (816) [2023-12-16 03:01:04,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 5031 transitions. [2023-12-16 03:01:04,498 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 5031 transitions. Word has length 676 [2023-12-16 03:01:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:01:04,499 INFO L495 AbstractCegarLoop]: Abstraction has 3213 states and 5031 transitions. [2023-12-16 03:01:04,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.375) internal successors, (227), 8 states have internal predecessors, (227), 3 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) [2023-12-16 03:01:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 5031 transitions. [2023-12-16 03:01:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-16 03:01:04,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:01:04,505 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:04,518 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 03:01:04,712 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 03:01:04,713 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:01:04,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:01:04,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1390867043, now seen corresponding path program 1 times [2023-12-16 03:01:04,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:01:04,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339862725] [2023-12-16 03:01:04,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:04,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:01:04,754 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:01:04,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331662410] [2023-12-16 03:01:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:04,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:01:04,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:01:04,772 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 03:01:04,792 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 03:01:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:01:05,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:01:05,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:01:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 7746 proven. 72 refuted. 0 times theorem prover too weak. 13194 trivial. 0 not checked. [2023-12-16 03:01:05,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:01:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 234 proven. 72 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-12-16 03:01:05,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:01:05,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339862725] [2023-12-16 03:01:05,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:01:05,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331662410] [2023-12-16 03:01:05,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331662410] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:01:05,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:01:05,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:01:05,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250098906] [2023-12-16 03:01:05,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:01:05,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:01:05,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:01:05,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:01:05,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:01:05,695 INFO L87 Difference]: Start difference. First operand 3213 states and 5031 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2023-12-16 03:01:06,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:01:06,260 INFO L93 Difference]: Finished difference Result 6449 states and 10045 transitions. [2023-12-16 03:01:06,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:01:06,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) Word has length 677 [2023-12-16 03:01:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:01:06,272 INFO L225 Difference]: With dead ends: 6449 [2023-12-16 03:01:06,273 INFO L226 Difference]: Without dead ends: 3213 [2023-12-16 03:01:06,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1356 GetRequests, 1346 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 03:01:06,280 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 471 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 03:01:06,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 915 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 03:01:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2023-12-16 03:01:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3157. [2023-12-16 03:01:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3157 states, 2296 states have (on average 1.4229094076655053) internal successors, (3267), 2304 states have internal predecessors, (3267), 816 states have call successors, (816), 44 states have call predecessors, (816), 44 states have return successors, (816), 808 states have call predecessors, (816), 816 states have call successors, (816) [2023-12-16 03:01:06,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 4899 transitions. [2023-12-16 03:01:06,477 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 4899 transitions. Word has length 677 [2023-12-16 03:01:06,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:01:06,478 INFO L495 AbstractCegarLoop]: Abstraction has 3157 states and 4899 transitions. [2023-12-16 03:01:06,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2023-12-16 03:01:06,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 4899 transitions. [2023-12-16 03:01:06,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-16 03:01:06,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:01:06,483 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:06,494 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 03:01:06,691 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 03:01:06,692 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:01:06,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:01:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash 696936225, now seen corresponding path program 1 times [2023-12-16 03:01:06,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:01:06,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483129841] [2023-12-16 03:01:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:06,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:01:06,731 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:01:06,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525371888] [2023-12-16 03:01:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:06,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:01:06,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:01:06,732 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 03:01:06,757 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 03:01:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:01:07,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:01:07,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:01:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-16 03:01:07,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:01:07,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:01:07,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483129841] [2023-12-16 03:01:07,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:01:07,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525371888] [2023-12-16 03:01:07,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525371888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:01:07,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:01:07,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:01:07,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317563863] [2023-12-16 03:01:07,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:01:07,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:01:07,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:01:07,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:01:07,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:01:07,197 INFO L87 Difference]: Start difference. First operand 3157 states and 4899 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:01:07,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:01:07,368 INFO L93 Difference]: Finished difference Result 8375 states and 13046 transitions. [2023-12-16 03:01:07,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:01:07,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 677 [2023-12-16 03:01:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:01:07,388 INFO L225 Difference]: With dead ends: 8375 [2023-12-16 03:01:07,388 INFO L226 Difference]: Without dead ends: 5219 [2023-12-16 03:01:07,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 675 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 03:01:07,399 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 479 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:01:07,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 1392 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:01:07,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2023-12-16 03:01:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 5217. [2023-12-16 03:01:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 3872 states have (on average 1.4325929752066116) internal successors, (5547), 3882 states have internal predecessors, (5547), 1276 states have call successors, (1276), 68 states have call predecessors, (1276), 68 states have return successors, (1276), 1266 states have call predecessors, (1276), 1276 states have call successors, (1276) [2023-12-16 03:01:07,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 8099 transitions. [2023-12-16 03:01:07,859 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 8099 transitions. Word has length 677 [2023-12-16 03:01:07,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:01:07,859 INFO L495 AbstractCegarLoop]: Abstraction has 5217 states and 8099 transitions. [2023-12-16 03:01:07,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:01:07,860 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 8099 transitions. [2023-12-16 03:01:07,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-16 03:01:07,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:01:07,865 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:07,887 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 03:01:08,073 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 03:01:08,074 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:01:08,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:01:08,074 INFO L85 PathProgramCache]: Analyzing trace with hash 931220517, now seen corresponding path program 1 times [2023-12-16 03:01:08,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:01:08,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267466075] [2023-12-16 03:01:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:08,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:01:08,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:01:08,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91508822] [2023-12-16 03:01:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:08,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:01:08,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:01:08,121 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 03:01:08,145 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 03:01:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:01:08,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 03:01:08,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:01:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 14657 proven. 438 refuted. 0 times theorem prover too weak. 5917 trivial. 0 not checked. [2023-12-16 03:01:11,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:01:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 195 proven. 111 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-12-16 03:01:14,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:01:14,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267466075] [2023-12-16 03:01:14,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:01:14,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91508822] [2023-12-16 03:01:14,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91508822] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:01:14,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:01:14,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 20 [2023-12-16 03:01:14,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32549629] [2023-12-16 03:01:14,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:01:14,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 03:01:14,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:01:14,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 03:01:14,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2023-12-16 03:01:14,627 INFO L87 Difference]: Start difference. First operand 5217 states and 8099 transitions. Second operand has 20 states, 20 states have (on average 13.6) internal successors, (272), 20 states have internal predecessors, (272), 8 states have call successors, (168), 6 states have call predecessors, (168), 10 states have return successors, (168), 8 states have call predecessors, (168), 8 states have call successors, (168) [2023-12-16 03:01:17,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:01:17,584 INFO L93 Difference]: Finished difference Result 13927 states and 21208 transitions. [2023-12-16 03:01:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-16 03:01:17,585 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.6) internal successors, (272), 20 states have internal predecessors, (272), 8 states have call successors, (168), 6 states have call predecessors, (168), 10 states have return successors, (168), 8 states have call predecessors, (168), 8 states have call successors, (168) Word has length 677 [2023-12-16 03:01:17,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:01:17,645 INFO L225 Difference]: With dead ends: 13927 [2023-12-16 03:01:17,645 INFO L226 Difference]: Without dead ends: 8711 [2023-12-16 03:01:17,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1379 GetRequests, 1335 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=1473, Unknown=0, NotChecked=0, Total=2070 [2023-12-16 03:01:17,658 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1029 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 3224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 03:01:17,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 2666 Invalid, 3224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2556 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 03:01:17,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8711 states. [2023-12-16 03:01:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8711 to 5505. [2023-12-16 03:01:18,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5505 states, 4088 states have (on average 1.4038649706457926) internal successors, (5739), 4098 states have internal predecessors, (5739), 1276 states have call successors, (1276), 140 states have call predecessors, (1276), 140 states have return successors, (1276), 1266 states have call predecessors, (1276), 1276 states have call successors, (1276) [2023-12-16 03:01:18,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5505 states to 5505 states and 8291 transitions. [2023-12-16 03:01:18,098 INFO L78 Accepts]: Start accepts. Automaton has 5505 states and 8291 transitions. Word has length 677 [2023-12-16 03:01:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:01:18,098 INFO L495 AbstractCegarLoop]: Abstraction has 5505 states and 8291 transitions. [2023-12-16 03:01:18,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.6) internal successors, (272), 20 states have internal predecessors, (272), 8 states have call successors, (168), 6 states have call predecessors, (168), 10 states have return successors, (168), 8 states have call predecessors, (168), 8 states have call successors, (168) [2023-12-16 03:01:18,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5505 states and 8291 transitions. [2023-12-16 03:01:18,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-12-16 03:01:18,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:01:18,104 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:18,113 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 03:01:18,313 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 03:01:18,313 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:01:18,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:01:18,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1455288989, now seen corresponding path program 1 times [2023-12-16 03:01:18,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:01:18,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594756429] [2023-12-16 03:01:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:18,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:01:18,354 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:01:18,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194603684] [2023-12-16 03:01:18,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:18,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:01:18,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:01:18,356 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 03:01:18,383 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 03:01:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:01:18,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 03:01:18,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:01:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-16 03:01:18,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:01:18,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:01:18,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594756429] [2023-12-16 03:01:18,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:01:18,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194603684] [2023-12-16 03:01:18,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194603684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:01:18,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:01:18,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:01:18,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70150156] [2023-12-16 03:01:18,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:01:18,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:01:18,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:01:18,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:01:18,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:01:18,892 INFO L87 Difference]: Start difference. First operand 5505 states and 8291 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:01:19,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:01:19,479 INFO L93 Difference]: Finished difference Result 12527 states and 18797 transitions. [2023-12-16 03:01:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:01:19,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 677 [2023-12-16 03:01:19,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:01:19,533 INFO L225 Difference]: With dead ends: 12527 [2023-12-16 03:01:19,533 INFO L226 Difference]: Without dead ends: 7023 [2023-12-16 03:01:19,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:01:19,556 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 459 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:01:19,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1887 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:01:19,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7023 states. [2023-12-16 03:01:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7023 to 5125. [2023-12-16 03:01:20,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 3708 states have (on average 1.3859223300970873) internal successors, (5139), 3718 states have internal predecessors, (5139), 1276 states have call successors, (1276), 140 states have call predecessors, (1276), 140 states have return successors, (1276), 1266 states have call predecessors, (1276), 1276 states have call successors, (1276) [2023-12-16 03:01:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 7691 transitions. [2023-12-16 03:01:20,560 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 7691 transitions. Word has length 677 [2023-12-16 03:01:20,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:01:20,561 INFO L495 AbstractCegarLoop]: Abstraction has 5125 states and 7691 transitions. [2023-12-16 03:01:20,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:01:20,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 7691 transitions. [2023-12-16 03:01:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-12-16 03:01:20,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:01:20,567 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:20,576 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 03:01:20,774 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 03:01:20,775 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:01:20,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:01:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash -84513297, now seen corresponding path program 1 times [2023-12-16 03:01:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:01:20,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646852673] [2023-12-16 03:01:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:01:20,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:01:20,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400727532] [2023-12-16 03:01:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:20,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:01:20,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:01:20,832 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:01:20,833 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 03:01:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:01:21,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:01:21,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:01:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-16 03:01:22,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:01:22,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:01:22,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646852673] [2023-12-16 03:01:22,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:01:22,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400727532] [2023-12-16 03:01:22,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400727532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:01:22,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:01:22,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:01:22,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400508173] [2023-12-16 03:01:22,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:01:22,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:01:22,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:01:22,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:01:22,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:01:22,068 INFO L87 Difference]: Start difference. First operand 5125 states and 7691 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:01:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:01:22,769 INFO L93 Difference]: Finished difference Result 15373 states and 23071 transitions. [2023-12-16 03:01:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:01:22,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 678 [2023-12-16 03:01:22,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:01:22,793 INFO L225 Difference]: With dead ends: 15373 [2023-12-16 03:01:22,793 INFO L226 Difference]: Without dead ends: 10249 [2023-12-16 03:01:22,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 676 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 03:01:22,802 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 120 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:01:22,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 968 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:01:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10249 states. [2023-12-16 03:01:23,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10249 to 10247. [2023-12-16 03:01:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10247 states, 7414 states have (on average 1.3835985972484488) internal successors, (10258), 7434 states have internal predecessors, (10258), 2552 states have call successors, (2552), 280 states have call predecessors, (2552), 280 states have return successors, (2552), 2532 states have call predecessors, (2552), 2552 states have call successors, (2552) [2023-12-16 03:01:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10247 states to 10247 states and 15362 transitions. [2023-12-16 03:01:23,647 INFO L78 Accepts]: Start accepts. Automaton has 10247 states and 15362 transitions. Word has length 678 [2023-12-16 03:01:23,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:01:23,648 INFO L495 AbstractCegarLoop]: Abstraction has 10247 states and 15362 transitions. [2023-12-16 03:01:23,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:01:23,648 INFO L276 IsEmpty]: Start isEmpty. Operand 10247 states and 15362 transitions. [2023-12-16 03:01:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-12-16 03:01:23,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:01:23,654 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:23,674 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 03:01:23,862 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 03:01:23,863 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:01:23,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:01:23,863 INFO L85 PathProgramCache]: Analyzing trace with hash -764571667, now seen corresponding path program 1 times [2023-12-16 03:01:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:01:23,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838219663] [2023-12-16 03:01:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:23,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:01:23,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:01:23,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892286032] [2023-12-16 03:01:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:23,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:01:23,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:01:23,905 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 03:01:23,940 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 03:01:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:01:24,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 03:01:24,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:01:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-12-16 03:01:24,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:01:24,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:01:24,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838219663] [2023-12-16 03:01:24,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:01:24,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892286032] [2023-12-16 03:01:24,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892286032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:01:24,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:01:24,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:01:24,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695288936] [2023-12-16 03:01:24,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:01:24,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:01:24,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:01:24,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:01:24,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:01:24,469 INFO L87 Difference]: Start difference. First operand 10247 states and 15362 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:01:25,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:01:25,370 INFO L93 Difference]: Finished difference Result 20975 states and 31452 transitions. [2023-12-16 03:01:25,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:01:25,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 678 [2023-12-16 03:01:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:01:25,396 INFO L225 Difference]: With dead ends: 20975 [2023-12-16 03:01:25,396 INFO L226 Difference]: Without dead ends: 10729 [2023-12-16 03:01:25,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:01:25,414 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 463 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:01:25,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1690 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:01:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10729 states. [2023-12-16 03:01:26,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10729 to 10247. [2023-12-16 03:01:26,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10247 states, 7414 states have (on average 1.370650121391961) internal successors, (10162), 7434 states have internal predecessors, (10162), 2552 states have call successors, (2552), 280 states have call predecessors, (2552), 280 states have return successors, (2552), 2532 states have call predecessors, (2552), 2552 states have call successors, (2552) [2023-12-16 03:01:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10247 states to 10247 states and 15266 transitions. [2023-12-16 03:01:26,427 INFO L78 Accepts]: Start accepts. Automaton has 10247 states and 15266 transitions. Word has length 678 [2023-12-16 03:01:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:01:26,428 INFO L495 AbstractCegarLoop]: Abstraction has 10247 states and 15266 transitions. [2023-12-16 03:01:26,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-12-16 03:01:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 10247 states and 15266 transitions. [2023-12-16 03:01:26,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2023-12-16 03:01:26,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:01:26,433 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:26,446 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 03:01:26,641 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 03:01:26,641 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:01:26,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:01:26,642 INFO L85 PathProgramCache]: Analyzing trace with hash -851342931, now seen corresponding path program 1 times [2023-12-16 03:01:26,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:01:26,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358963706] [2023-12-16 03:01:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:26,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:01:26,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:01:26,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534807505] [2023-12-16 03:01:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:26,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:01:26,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:01:26,686 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 03:01:26,691 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 03:01:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:01:27,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 03:01:27,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:01:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 2418 proven. 288 refuted. 0 times theorem prover too weak. 18306 trivial. 0 not checked. [2023-12-16 03:01:28,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:01:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 18 proven. 288 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-12-16 03:01:29,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:01:29,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358963706] [2023-12-16 03:01:29,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:01:29,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534807505] [2023-12-16 03:01:29,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534807505] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:01:29,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:01:29,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 03:01:29,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283104070] [2023-12-16 03:01:29,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:01:29,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 03:01:29,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:01:29,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 03:01:29,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-16 03:01:29,517 INFO L87 Difference]: Start difference. First operand 10247 states and 15266 transitions. Second operand has 12 states, 12 states have (on average 26.666666666666668) internal successors, (320), 12 states have internal predecessors, (320), 4 states have call successors, (206), 3 states have call predecessors, (206), 5 states have return successors, (206), 4 states have call predecessors, (206), 4 states have call successors, (206) [2023-12-16 03:01:30,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:01:30,583 INFO L93 Difference]: Finished difference Result 13046 states and 19316 transitions. [2023-12-16 03:01:30,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 03:01:30,584 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 26.666666666666668) internal successors, (320), 12 states have internal predecessors, (320), 4 states have call successors, (206), 3 states have call predecessors, (206), 5 states have return successors, (206), 4 states have call predecessors, (206), 4 states have call successors, (206) Word has length 678 [2023-12-16 03:01:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:01:30,596 INFO L225 Difference]: With dead ends: 13046 [2023-12-16 03:01:30,596 INFO L226 Difference]: Without dead ends: 5361 [2023-12-16 03:01:30,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1363 GetRequests, 1344 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2023-12-16 03:01:30,609 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 674 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 03:01:30,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 920 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 03:01:30,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5361 states. [2023-12-16 03:01:30,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5361 to 2946. [2023-12-16 03:01:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2107 states have (on average 1.3540579022306598) internal successors, (2853), 2113 states have internal predecessors, (2853), 747 states have call successors, (747), 91 states have call predecessors, (747), 91 states have return successors, (747), 741 states have call predecessors, (747), 747 states have call successors, (747) [2023-12-16 03:01:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 4347 transitions. [2023-12-16 03:01:30,906 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 4347 transitions. Word has length 678 [2023-12-16 03:01:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:01:30,907 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 4347 transitions. [2023-12-16 03:01:30,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.666666666666668) internal successors, (320), 12 states have internal predecessors, (320), 4 states have call successors, (206), 3 states have call predecessors, (206), 5 states have return successors, (206), 4 states have call predecessors, (206), 4 states have call successors, (206) [2023-12-16 03:01:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 4347 transitions. [2023-12-16 03:01:30,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2023-12-16 03:01:30,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:01:30,912 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:30,923 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 03:01:31,121 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 03:01:31,121 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:01:31,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:01:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1541616037, now seen corresponding path program 1 times [2023-12-16 03:01:31,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:01:31,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662530777] [2023-12-16 03:01:31,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:31,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:01:31,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:01:31,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718525331] [2023-12-16 03:01:31,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:31,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:01:31,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:01:31,177 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 03:01:31,178 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 03:01:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:01:31,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 03:01:31,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:01:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 5916 proven. 255 refuted. 0 times theorem prover too weak. 14841 trivial. 0 not checked. [2023-12-16 03:01:32,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:01:32,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 51 proven. 255 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-12-16 03:01:32,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:01:32,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662530777] [2023-12-16 03:01:32,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:01:32,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718525331] [2023-12-16 03:01:32,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718525331] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:01:32,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:01:32,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-16 03:01:32,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721372467] [2023-12-16 03:01:32,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:01:32,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 03:01:32,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:01:32,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 03:01:32,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-16 03:01:32,977 INFO L87 Difference]: Start difference. First operand 2946 states and 4347 transitions. Second operand has 13 states, 13 states have (on average 15.384615384615385) internal successors, (200), 13 states have internal predecessors, (200), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2023-12-16 03:01:34,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:01:34,593 INFO L93 Difference]: Finished difference Result 6925 states and 10090 transitions. [2023-12-16 03:01:34,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 03:01:34,593 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.384615384615385) internal successors, (200), 13 states have internal predecessors, (200), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) Word has length 679 [2023-12-16 03:01:34,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:01:34,601 INFO L225 Difference]: With dead ends: 6925 [2023-12-16 03:01:34,601 INFO L226 Difference]: Without dead ends: 3989 [2023-12-16 03:01:34,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1374 GetRequests, 1345 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2023-12-16 03:01:34,607 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 959 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:01:34,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 2524 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 03:01:34,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3989 states. [2023-12-16 03:01:34,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3989 to 2718. [2023-12-16 03:01:34,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 1957 states have (on average 1.3418497700562084) internal successors, (2626), 1963 states have internal predecessors, (2626), 660 states have call successors, (660), 100 states have call predecessors, (660), 100 states have return successors, (660), 654 states have call predecessors, (660), 660 states have call successors, (660) [2023-12-16 03:01:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 3946 transitions. [2023-12-16 03:01:34,868 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 3946 transitions. Word has length 679 [2023-12-16 03:01:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:01:34,868 INFO L495 AbstractCegarLoop]: Abstraction has 2718 states and 3946 transitions. [2023-12-16 03:01:34,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.384615384615385) internal successors, (200), 13 states have internal predecessors, (200), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2023-12-16 03:01:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 3946 transitions. [2023-12-16 03:01:34,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2023-12-16 03:01:34,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:01:34,874 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:34,895 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 03:01:35,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 03:01:35,082 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:01:35,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:01:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1944004633, now seen corresponding path program 1 times [2023-12-16 03:01:35,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:01:35,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937706932] [2023-12-16 03:01:35,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:35,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:01:35,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:01:35,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391375188] [2023-12-16 03:01:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:01:35,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:01:35,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:01:35,139 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:01:35,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 03:01:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:01:35,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 03:01:35,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:01:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10572 proven. 495 refuted. 0 times theorem prover too weak. 9945 trivial. 0 not checked. [2023-12-16 03:01:38,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:01:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 276 proven. 333 refuted. 0 times theorem prover too weak. 20403 trivial. 0 not checked. [2023-12-16 03:01:42,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:01:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937706932] [2023-12-16 03:01:42,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:01:42,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391375188] [2023-12-16 03:01:42,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391375188] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:01:42,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:01:42,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-16 03:01:42,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873009441] [2023-12-16 03:01:42,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:01:42,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 03:01:42,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:01:42,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 03:01:42,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-12-16 03:01:42,254 INFO L87 Difference]: Start difference. First operand 2718 states and 3946 transitions. Second operand has 26 states, 25 states have (on average 12.6) internal successors, (315), 24 states have internal predecessors, (315), 8 states have call successors, (206), 5 states have call predecessors, (206), 8 states have return successors, (206), 8 states have call predecessors, (206), 8 states have call successors, (206) Received shutdown request... [2023-12-16 03:01:48,464 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:01:48,464 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 03:01:48,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-16 03:01:48,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1412 GetRequests, 1343 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1430, Invalid=3540, Unknown=0, NotChecked=0, Total=4970 [2023-12-16 03:01:48,467 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 3201 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 3086 mSolverCounterSat, 1662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3236 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 4748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1662 IncrementalHoareTripleChecker+Valid, 3086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:01:48,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3236 Valid, 3253 Invalid, 4748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1662 Valid, 3086 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-16 03:01:48,468 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 03:01:48,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-16 03:01:48,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 03:01:48,680 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (2718states) and FLOYD_HOARE automaton (currently 48 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (10895 states constructed, input type IntersectNwa). [2023-12-16 03:01:48,685 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:01:48,687 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 03:01:48,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:01:48 BoogieIcfgContainer [2023-12-16 03:01:48,689 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 03:01:48,690 INFO L158 Benchmark]: Toolchain (without parser) took 59666.78ms. Allocated memory was 306.2MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 251.7MB in the beginning and 1.0GB in the end (delta: -762.9MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-16 03:01:48,690 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory is still 133.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 03:01:48,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 792.16ms. Allocated memory is still 306.2MB. Free memory was 251.3MB in the beginning and 219.0MB in the end (delta: 32.3MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-16 03:01:48,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.47ms. Allocated memory is still 306.2MB. Free memory was 219.0MB in the beginning and 267.2MB in the end (delta: -48.2MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-16 03:01:48,691 INFO L158 Benchmark]: Boogie Preprocessor took 117.96ms. Allocated memory is still 306.2MB. Free memory was 267.2MB in the beginning and 253.0MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 03:01:48,692 INFO L158 Benchmark]: RCFGBuilder took 841.62ms. Allocated memory is still 306.2MB. Free memory was 253.0MB in the beginning and 174.4MB in the end (delta: 78.6MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. [2023-12-16 03:01:48,692 INFO L158 Benchmark]: TraceAbstraction took 57807.10ms. Allocated memory was 306.2MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 173.3MB in the beginning and 1.0GB in the end (delta: -841.3MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-16 03:01:48,695 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory is still 133.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 792.16ms. Allocated memory is still 306.2MB. Free memory was 251.3MB in the beginning and 219.0MB in the end (delta: 32.3MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 102.47ms. Allocated memory is still 306.2MB. Free memory was 219.0MB in the beginning and 267.2MB in the end (delta: -48.2MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 117.96ms. Allocated memory is still 306.2MB. Free memory was 267.2MB in the beginning and 253.0MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * RCFGBuilder took 841.62ms. Allocated memory is still 306.2MB. Free memory was 253.0MB in the beginning and 174.4MB in the end (delta: 78.6MB). Peak memory consumption was 78.6MB. Max. memory is 8.0GB. * TraceAbstraction took 57807.10ms. Allocated memory was 306.2MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 173.3MB in the beginning and 1.0GB in the end (delta: -841.3MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (2718states) and FLOYD_HOARE automaton (currently 48 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (10895 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 302 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.8s, OverallIterations: 18, TraceHistogramMax: 103, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 18.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13258 SdHoareTripleChecker+Valid, 9.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13024 mSDsluCounter, 29243 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17837 mSDsCounter, 4138 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10584 IncrementalHoareTripleChecker+Invalid, 14722 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4138 mSolverCounterUnsat, 11406 mSDtfsCounter, 10584 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17027 GetRequests, 16814 SyntacticMatches, 5 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10247occurred in iteration=14, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.9s AutomataMinimizationTime, 17 MinimizatonAttempts, 12343 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 20.3s InterpolantComputationTime, 12850 NumberOfCodeBlocks, 12850 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 16893 ConstructedInterpolants, 0 QuantifiedInterpolants, 64518 SizeOfPredicates, 59 NumberOfNonLiveVariables, 29004 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 25 InterpolantComputations, 11 PerfectInterpolantSequences, 521865/525300 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