/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-45.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:56:13,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:56:13,908 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 06:56:13,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:56:13,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:56:13,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:56:13,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:56:13,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:56:13,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:56:13,934 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:56:13,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:56:13,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:56:13,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:56:13,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:56:13,936 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:56:13,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:56:13,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:56:13,936 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:56:13,936 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:56:13,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:56:13,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:56:13,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:56:13,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:56:13,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:56:13,937 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:56:13,937 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:56:13,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:56:13,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:56:13,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:56:13,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:56:13,939 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:56:13,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:56:13,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:56:13,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:56:13,939 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:56:13,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:56:13,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:56:13,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:56:13,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:56:13,940 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:56:13,940 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:56:13,940 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:56:13,940 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:56:13,940 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:56:14,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:56:14,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:56:14,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:56:14,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:56:14,205 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:56:14,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-45.i [2023-12-19 06:56:15,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:56:15,507 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:56:15,508 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-45.i [2023-12-19 06:56:15,516 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/867a2f35b/f3c6a85c305e4c53af0043850f3bd10f/FLAG742ffd292 [2023-12-19 06:56:15,527 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/867a2f35b/f3c6a85c305e4c53af0043850f3bd10f [2023-12-19 06:56:15,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:56:15,530 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:56:15,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:56:15,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:56:15,538 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:56:15,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:15,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d296a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15, skipping insertion in model container [2023-12-19 06:56:15,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:15,583 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:56:15,686 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-250_file-45.i[916,929] [2023-12-19 06:56:15,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:56:15,815 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:56:15,824 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-250_file-45.i[916,929] [2023-12-19 06:56:15,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:56:15,938 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:56:15,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15 WrapperNode [2023-12-19 06:56:15,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:56:15,939 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:56:15,939 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:56:15,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:56:15,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:15,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:15,998 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 498 [2023-12-19 06:56:15,998 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:56:15,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:56:15,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:56:15,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:56:16,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:16,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:16,028 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:16,044 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]. [2023-12-19 06:56:16,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:16,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:16,068 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:16,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:16,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:16,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:16,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:56:16,094 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:56:16,094 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:56:16,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:56:16,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (1/1) ... [2023-12-19 06:56:16,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:56:16,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:56:16,117 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) [2023-12-19 06:56:16,123 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 [2023-12-19 06:56:16,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:56:16,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:56:16,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:56:16,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:56:16,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:56:16,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:56:16,245 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:56:16,248 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:56:16,877 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:56:16,961 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:56:16,961 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 06:56:16,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:56:16 BoogieIcfgContainer [2023-12-19 06:56:16,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:56:16,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:56:16,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:56:16,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:56:16,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:56:15" (1/3) ... [2023-12-19 06:56:16,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4ba71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:56:16, skipping insertion in model container [2023-12-19 06:56:16,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:56:15" (2/3) ... [2023-12-19 06:56:16,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4ba71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:56:16, skipping insertion in model container [2023-12-19 06:56:16,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:56:16" (3/3) ... [2023-12-19 06:56:16,969 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-45.i [2023-12-19 06:56:16,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:56:16,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:56:17,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:56:17,029 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;@191cf2bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:56:17,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:56:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 131 states have (on average 1.5877862595419847) internal successors, (208), 132 states have internal predecessors, (208), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-19 06:56:17,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-19 06:56:17,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:56:17,054 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:56:17,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:56:17,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:56:17,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1789886840, now seen corresponding path program 1 times [2023-12-19 06:56:17,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:56:17,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060908612] [2023-12-19 06:56:17,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:17,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:56:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:56:17,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:56:17,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060908612] [2023-12-19 06:56:17,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 06:56:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175301997] [2023-12-19 06:56:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:17,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:56:17,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:56:17,391 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) [2023-12-19 06:56:17,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 06:56:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:56:17,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 06:56:17,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:56:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2023-12-19 06:56:17,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:56:17,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175301997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:56:17,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:56:17,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:56:17,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663856756] [2023-12-19 06:56:17,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:56:17,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 06:56:17,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:56:17,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 06:56:17,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:56:17,711 INFO L87 Difference]: Start difference. First operand has 201 states, 131 states have (on average 1.5877862595419847) internal successors, (208), 132 states have internal predecessors, (208), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-19 06:56:17,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:56:17,777 INFO L93 Difference]: Finished difference Result 399 states and 749 transitions. [2023-12-19 06:56:17,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 06:56:17,779 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 424 [2023-12-19 06:56:17,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:56:17,785 INFO L225 Difference]: With dead ends: 399 [2023-12-19 06:56:17,785 INFO L226 Difference]: Without dead ends: 199 [2023-12-19 06:56:17,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:56:17,791 INFO L413 NwaCegarLoop]: 334 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, 334 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 [2023-12-19 06:56:17,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 334 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:56:17,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-19 06:56:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2023-12-19 06:56:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 130 states have (on average 1.5615384615384615) internal successors, (203), 130 states have internal predecessors, (203), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-19 06:56:17,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 337 transitions. [2023-12-19 06:56:17,849 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 337 transitions. Word has length 424 [2023-12-19 06:56:17,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:56:17,851 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 337 transitions. [2023-12-19 06:56:17,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-19 06:56:17,851 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 337 transitions. [2023-12-19 06:56:17,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-19 06:56:17,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:56:17,863 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:56:17,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 06:56:18,070 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 [2023-12-19 06:56:18,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:56:18,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:56:18,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1695126082, now seen corresponding path program 1 times [2023-12-19 06:56:18,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:56:18,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064105628] [2023-12-19 06:56:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:18,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:56:18,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:56:18,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015295240] [2023-12-19 06:56:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:18,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:56:18,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:56:18,161 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) [2023-12-19 06:56:18,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 06:56:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:56:18,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:56:18,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:56:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 06:56:18,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:56:18,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:56:18,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064105628] [2023-12-19 06:56:18,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:56:18,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015295240] [2023-12-19 06:56:18,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015295240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:56:18,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:56:18,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:56:18,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259868244] [2023-12-19 06:56:18,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:56:18,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:56:18,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:56:18,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:56:18,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:56:18,436 INFO L87 Difference]: Start difference. First operand 199 states and 337 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 06:56:18,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:56:18,511 INFO L93 Difference]: Finished difference Result 508 states and 866 transitions. [2023-12-19 06:56:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:56:18,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 424 [2023-12-19 06:56:18,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:56:18,515 INFO L225 Difference]: With dead ends: 508 [2023-12-19 06:56:18,515 INFO L226 Difference]: Without dead ends: 310 [2023-12-19 06:56:18,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:56:18,517 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 194 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:56:18,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 742 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:56:18,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-12-19 06:56:18,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 307. [2023-12-19 06:56:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 221 states have (on average 1.6244343891402715) internal successors, (359), 222 states have internal predecessors, (359), 83 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-19 06:56:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 525 transitions. [2023-12-19 06:56:18,570 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 525 transitions. Word has length 424 [2023-12-19 06:56:18,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:56:18,572 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 525 transitions. [2023-12-19 06:56:18,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 06:56:18,572 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 525 transitions. [2023-12-19 06:56:18,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-19 06:56:18,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:56:18,576 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:56:18,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 06:56:18,776 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 [2023-12-19 06:56:18,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:56:18,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:56:18,778 INFO L85 PathProgramCache]: Analyzing trace with hash -660679168, now seen corresponding path program 1 times [2023-12-19 06:56:18,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:56:18,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502694878] [2023-12-19 06:56:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:18,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:56:18,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:56:18,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301904152] [2023-12-19 06:56:18,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:18,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:56:18,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:56:18,881 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) [2023-12-19 06:56:18,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 06:56:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:56:19,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:56:19,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:56:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 06:56:19,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:56:19,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:56:19,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502694878] [2023-12-19 06:56:19,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:56:19,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301904152] [2023-12-19 06:56:19,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301904152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:56:19,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:56:19,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:56:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579438530] [2023-12-19 06:56:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:56:19,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:56:19,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:56:19,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:56:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:56:19,171 INFO L87 Difference]: Start difference. First operand 307 states and 525 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 06:56:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:56:19,208 INFO L93 Difference]: Finished difference Result 620 states and 1054 transitions. [2023-12-19 06:56:19,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:56:19,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 424 [2023-12-19 06:56:19,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:56:19,212 INFO L225 Difference]: With dead ends: 620 [2023-12-19 06:56:19,212 INFO L226 Difference]: Without dead ends: 314 [2023-12-19 06:56:19,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:56:19,213 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 160 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:56:19,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 695 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:56:19,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-19 06:56:19,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 247. [2023-12-19 06:56:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 177 states have (on average 1.5932203389830508) internal successors, (282), 177 states have internal predecessors, (282), 67 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-19 06:56:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 416 transitions. [2023-12-19 06:56:19,230 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 416 transitions. Word has length 424 [2023-12-19 06:56:19,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:56:19,231 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 416 transitions. [2023-12-19 06:56:19,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 06:56:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 416 transitions. [2023-12-19 06:56:19,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-19 06:56:19,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:56:19,234 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:56:19,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 06:56:19,441 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 [2023-12-19 06:56:19,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:56:19,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:56:19,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1945344386, now seen corresponding path program 1 times [2023-12-19 06:56:19,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:56:19,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111565302] [2023-12-19 06:56:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:19,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:56:19,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:56:19,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85449003] [2023-12-19 06:56:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:19,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:56:19,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:56:19,508 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) [2023-12-19 06:56:19,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 06:56:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:56:19,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:56:19,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:56:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 06:56:19,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:56:19,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:56:19,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111565302] [2023-12-19 06:56:19,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:56:19,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85449003] [2023-12-19 06:56:19,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85449003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:56:19,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:56:19,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:56:19,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063533056] [2023-12-19 06:56:19,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:56:19,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:56:19,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:56:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:56:19,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:56:19,793 INFO L87 Difference]: Start difference. First operand 247 states and 416 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 06:56:19,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:56:19,831 INFO L93 Difference]: Finished difference Result 657 states and 1097 transitions. [2023-12-19 06:56:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:56:19,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 424 [2023-12-19 06:56:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:56:19,837 INFO L225 Difference]: With dead ends: 657 [2023-12-19 06:56:19,837 INFO L226 Difference]: Without dead ends: 411 [2023-12-19 06:56:19,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:56:19,839 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 233 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:56:19,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 656 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:56:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-19 06:56:19,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 408. [2023-12-19 06:56:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 280 states have (on average 1.542857142857143) internal successors, (432), 281 states have internal predecessors, (432), 123 states have call successors, (123), 4 states have call predecessors, (123), 4 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2023-12-19 06:56:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 678 transitions. [2023-12-19 06:56:19,877 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 678 transitions. Word has length 424 [2023-12-19 06:56:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:56:19,881 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 678 transitions. [2023-12-19 06:56:19,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 06:56:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 678 transitions. [2023-12-19 06:56:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-19 06:56:19,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:56:19,885 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:56:19,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 06:56:20,112 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 [2023-12-19 06:56:20,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:56:20,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:56:20,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2130768192, now seen corresponding path program 1 times [2023-12-19 06:56:20,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:56:20,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074858676] [2023-12-19 06:56:20,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:20,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:56:20,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:56:20,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990727768] [2023-12-19 06:56:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:20,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:56:20,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:56:20,157 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) [2023-12-19 06:56:20,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 06:56:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:56:20,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:56:20,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:56:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 06:56:20,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:56:20,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:56:20,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074858676] [2023-12-19 06:56:20,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:56:20,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990727768] [2023-12-19 06:56:20,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990727768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:56:20,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:56:20,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:56:20,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513265948] [2023-12-19 06:56:20,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:56:20,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:56:20,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:56:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:56:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:56:20,421 INFO L87 Difference]: Start difference. First operand 408 states and 678 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 06:56:20,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:56:20,468 INFO L93 Difference]: Finished difference Result 1216 states and 2020 transitions. [2023-12-19 06:56:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:56:20,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 424 [2023-12-19 06:56:20,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:56:20,473 INFO L225 Difference]: With dead ends: 1216 [2023-12-19 06:56:20,474 INFO L226 Difference]: Without dead ends: 809 [2023-12-19 06:56:20,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:56:20,475 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 326 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:56:20,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 664 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:56:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2023-12-19 06:56:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 807. [2023-12-19 06:56:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 552 states have (on average 1.5289855072463767) internal successors, (844), 554 states have internal predecessors, (844), 246 states have call successors, (246), 8 states have call predecessors, (246), 8 states have return successors, (246), 244 states have call predecessors, (246), 246 states have call successors, (246) [2023-12-19 06:56:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1336 transitions. [2023-12-19 06:56:20,524 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1336 transitions. Word has length 424 [2023-12-19 06:56:20,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:56:20,526 INFO L495 AbstractCegarLoop]: Abstraction has 807 states and 1336 transitions. [2023-12-19 06:56:20,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 06:56:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1336 transitions. [2023-12-19 06:56:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-19 06:56:20,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:56:20,529 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:56:20,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 06:56:20,736 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 [2023-12-19 06:56:20,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:56:20,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:56:20,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1318731175, now seen corresponding path program 1 times [2023-12-19 06:56:20,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:56:20,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862891611] [2023-12-19 06:56:20,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:20,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:56:20,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:56:20,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940121050] [2023-12-19 06:56:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:20,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:56:20,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:56:20,774 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) [2023-12-19 06:56:20,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 06:56:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:56:21,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 06:56:21,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:56:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3006 proven. 156 refuted. 0 times theorem prover too weak. 5682 trivial. 0 not checked. [2023-12-19 06:56:21,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:56:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 42 proven. 156 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-19 06:56:21,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:56:21,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862891611] [2023-12-19 06:56:21,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:56:21,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940121050] [2023-12-19 06:56:21,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940121050] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:56:21,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:56:21,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-19 06:56:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377572795] [2023-12-19 06:56:21,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:56:21,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 06:56:21,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:56:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 06:56:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 06:56:21,693 INFO L87 Difference]: Start difference. First operand 807 states and 1336 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-19 06:56:22,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:56:22,053 INFO L93 Difference]: Finished difference Result 1238 states and 2033 transitions. [2023-12-19 06:56:22,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 06:56:22,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) Word has length 425 [2023-12-19 06:56:22,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:56:22,056 INFO L225 Difference]: With dead ends: 1238 [2023-12-19 06:56:22,056 INFO L226 Difference]: Without dead ends: 432 [2023-12-19 06:56:22,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 841 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-19 06:56:22,058 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 330 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:56:22,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 632 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:56:22,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-12-19 06:56:22,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 414. [2023-12-19 06:56:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 284 states have (on average 1.5070422535211268) internal successors, (428), 285 states have internal predecessors, (428), 123 states have call successors, (123), 6 states have call predecessors, (123), 6 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2023-12-19 06:56:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 674 transitions. [2023-12-19 06:56:22,080 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 674 transitions. Word has length 425 [2023-12-19 06:56:22,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:56:22,081 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 674 transitions. [2023-12-19 06:56:22,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-19 06:56:22,081 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 674 transitions. [2023-12-19 06:56:22,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-19 06:56:22,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:56:22,083 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:56:22,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 06:56:22,297 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 [2023-12-19 06:56:22,298 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:56:22,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:56:22,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1647144017, now seen corresponding path program 1 times [2023-12-19 06:56:22,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:56:22,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276861279] [2023-12-19 06:56:22,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:22,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:56:22,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:56:22,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395746431] [2023-12-19 06:56:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:22,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:56:22,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:56:22,344 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) [2023-12-19 06:56:22,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 06:56:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:56:22,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:56:22,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:56:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-19 06:56:23,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:56:23,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:56:23,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276861279] [2023-12-19 06:56:23,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:56:23,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395746431] [2023-12-19 06:56:23,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395746431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:56:23,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:56:23,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 06:56:23,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441822053] [2023-12-19 06:56:23,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:56:23,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 06:56:23,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:56:23,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 06:56:23,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:56:23,647 INFO L87 Difference]: Start difference. First operand 414 states and 674 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 06:56:24,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:56:24,203 INFO L93 Difference]: Finished difference Result 893 states and 1438 transitions. [2023-12-19 06:56:24,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 06:56:24,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 425 [2023-12-19 06:56:24,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:56:24,209 INFO L225 Difference]: With dead ends: 893 [2023-12-19 06:56:24,209 INFO L226 Difference]: Without dead ends: 480 [2023-12-19 06:56:24,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 06:56:24,211 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 371 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:56:24,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 709 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:56:24,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-12-19 06:56:24,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 476. [2023-12-19 06:56:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 328 states have (on average 1.4634146341463414) internal successors, (480), 331 states have internal predecessors, (480), 139 states have call successors, (139), 8 states have call predecessors, (139), 8 states have return successors, (139), 136 states have call predecessors, (139), 139 states have call successors, (139) [2023-12-19 06:56:24,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 758 transitions. [2023-12-19 06:56:24,278 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 758 transitions. Word has length 425 [2023-12-19 06:56:24,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:56:24,279 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 758 transitions. [2023-12-19 06:56:24,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-19 06:56:24,279 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 758 transitions. [2023-12-19 06:56:24,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-19 06:56:24,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:56:24,282 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:56:24,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 06:56:24,489 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 [2023-12-19 06:56:24,489 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:56:24,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:56:24,490 INFO L85 PathProgramCache]: Analyzing trace with hash 465755273, now seen corresponding path program 1 times [2023-12-19 06:56:24,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:56:24,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354628252] [2023-12-19 06:56:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:24,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:56:24,526 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:56:24,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565423001] [2023-12-19 06:56:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:56:24,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:56:24,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:56:24,545 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) [2023-12-19 06:56:24,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 06:56:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:56:24,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-19 06:56:24,886 INFO L285 TraceCheckSpWp]: Computing forward predicates...