/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-52.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:57:38,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:57:38,747 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 06:57:38,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:57:38,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:57:38,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:57:38,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:57:38,788 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:57:38,789 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:57:38,792 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:57:38,793 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:57:38,793 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:57:38,794 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:57:38,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:57:38,795 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:57:38,796 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:57:38,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:57:38,796 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:57:38,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:57:38,798 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:57:38,798 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:57:38,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:57:38,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:57:38,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:57:38,799 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:57:38,799 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:57:38,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:57:38,800 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:57:38,801 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:57:38,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:57:38,802 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:57:38,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:57:38,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:57:38,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:57:38,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:57:38,803 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:57:38,803 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:57:38,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:57:38,803 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:57:38,803 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:57:38,803 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:57:38,804 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:57:38,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:57:38,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:57:39,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:57:39,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:57:39,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:57:39,071 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:57:39,074 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:57:39,075 INFO L431 ainManager$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-52.i [2023-12-19 06:57:40,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:57:40,610 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:57:40,611 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-52.i [2023-12-19 06:57:40,631 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a007cb48/fccc2d97b1714e39a5599c32f1815f5d/FLAG0a08f69f4 [2023-12-19 06:57:40,652 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a007cb48/fccc2d97b1714e39a5599c32f1815f5d [2023-12-19 06:57:40,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:57:40,656 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:57:40,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:57:40,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:57:40,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:57:40,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:57:40" (1/1) ... [2023-12-19 06:57:40,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d3e54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:40, skipping insertion in model container [2023-12-19 06:57:40,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:57:40" (1/1) ... [2023-12-19 06:57:40,719 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:57:40,874 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-52.i[916,929] [2023-12-19 06:57:40,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:57:40,998 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:57:41,010 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-52.i[916,929] [2023-12-19 06:57:41,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:57:41,107 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:57:41,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41 WrapperNode [2023-12-19 06:57:41,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:57:41,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:57:41,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:57:41,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:57:41,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (1/1) ... [2023-12-19 06:57:41,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (1/1) ... [2023-12-19 06:57:41,191 INFO L138 Inliner]: procedures = 26, calls = 86, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 541 [2023-12-19 06:57:41,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:57:41,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:57:41,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:57:41,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:57:41,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (1/1) ... [2023-12-19 06:57:41,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (1/1) ... [2023-12-19 06:57:41,207 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (1/1) ... [2023-12-19 06:57:41,232 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 06:57:41,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (1/1) ... [2023-12-19 06:57:41,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (1/1) ... [2023-12-19 06:57:41,250 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (1/1) ... [2023-12-19 06:57:41,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (1/1) ... [2023-12-19 06:57:41,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (1/1) ... [2023-12-19 06:57:41,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (1/1) ... [2023-12-19 06:57:41,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:57:41,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:57:41,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:57:41,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:57:41,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (1/1) ... [2023-12-19 06:57:41,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:57:41,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:57:41,301 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 06:57:41,331 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 06:57:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:57:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:57:41,338 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:57:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:57:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:57:41,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:57:41,452 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:57:41,454 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:57:42,142 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:57:42,199 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:57:42,200 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 06:57:42,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:57:42 BoogieIcfgContainer [2023-12-19 06:57:42,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:57:42,202 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:57:42,202 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:57:42,205 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:57:42,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:57:40" (1/3) ... [2023-12-19 06:57:42,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41482903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:57:42, skipping insertion in model container [2023-12-19 06:57:42,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:57:41" (2/3) ... [2023-12-19 06:57:42,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41482903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:57:42, skipping insertion in model container [2023-12-19 06:57:42,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:57:42" (3/3) ... [2023-12-19 06:57:42,208 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-52.i [2023-12-19 06:57:42,224 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:57:42,224 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:57:42,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:57:42,288 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;@1072e4d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:57:42,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:57:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 130 states have (on average 1.6) internal successors, (208), 131 states have internal predecessors, (208), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-19 06:57:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-12-19 06:57:42,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:57:42,318 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:42,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:57:42,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:57:42,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1270848220, now seen corresponding path program 1 times [2023-12-19 06:57:42,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:57:42,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30445421] [2023-12-19 06:57:42,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:42,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:57:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:57:42,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:57:42,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30445421] [2023-12-19 06:57:42,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 06:57:42,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741365866] [2023-12-19 06:57:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:42,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:57:42,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:57:42,706 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 06:57:42,732 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 06:57:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:57:43,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 06:57:43,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:57:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2023-12-19 06:57:43,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:57:43,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741365866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:57:43,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:57:43,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:57:43,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389844708] [2023-12-19 06:57:43,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:57:43,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 06:57:43,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:57:43,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 06:57:43,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:57:43,203 INFO L87 Difference]: Start difference. First operand has 206 states, 130 states have (on average 1.6) internal successors, (208), 131 states have internal predecessors, (208), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) 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, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-19 06:57:43,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:57:43,286 INFO L93 Difference]: Finished difference Result 409 states and 779 transitions. [2023-12-19 06:57:43,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 06:57:43,290 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, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) Word has length 454 [2023-12-19 06:57:43,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:57:43,299 INFO L225 Difference]: With dead ends: 409 [2023-12-19 06:57:43,299 INFO L226 Difference]: Without dead ends: 204 [2023-12-19 06:57:43,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 453 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 06:57:43,312 INFO L413 NwaCegarLoop]: 345 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, 345 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 06:57:43,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:57:43,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-19 06:57:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2023-12-19 06:57:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 129 states have (on average 1.565891472868217) internal successors, (202), 129 states have internal predecessors, (202), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-19 06:57:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 348 transitions. [2023-12-19 06:57:43,399 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 348 transitions. Word has length 454 [2023-12-19 06:57:43,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:57:43,401 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 348 transitions. [2023-12-19 06:57:43,401 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, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-19 06:57:43,401 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 348 transitions. [2023-12-19 06:57:43,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-12-19 06:57:43,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:57:43,417 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:43,430 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 06:57:43,624 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 06:57:43,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:57:43,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:57:43,626 INFO L85 PathProgramCache]: Analyzing trace with hash 391381530, now seen corresponding path program 1 times [2023-12-19 06:57:43,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:57:43,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477653149] [2023-12-19 06:57:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:43,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:57:43,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:57:43,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084433966] [2023-12-19 06:57:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:43,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:57:43,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:57:43,741 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 06:57:43,760 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 06:57:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:57:44,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:57:44,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:57:44,653 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 06:57:44,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:57:44,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:57:44,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477653149] [2023-12-19 06:57:44,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:57:44,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084433966] [2023-12-19 06:57:44,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084433966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:57:44,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:57:44,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:57:44,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057036013] [2023-12-19 06:57:44,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:57:44,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:57:44,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:57:44,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:57:44,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:57:44,661 INFO L87 Difference]: Start difference. First operand 204 states and 348 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 06:57:44,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:57:44,751 INFO L93 Difference]: Finished difference Result 610 states and 1042 transitions. [2023-12-19 06:57:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:57:44,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 454 [2023-12-19 06:57:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:57:44,757 INFO L225 Difference]: With dead ends: 610 [2023-12-19 06:57:44,757 INFO L226 Difference]: Without dead ends: 407 [2023-12-19 06:57:44,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 452 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 06:57:44,760 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 134 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:57:44,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 727 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:57:44,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-19 06:57:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 404. [2023-12-19 06:57:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 255 states have (on average 1.5607843137254902) internal successors, (398), 255 states have internal predecessors, (398), 146 states have call successors, (146), 2 states have call predecessors, (146), 2 states have return successors, (146), 146 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-19 06:57:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 690 transitions. [2023-12-19 06:57:44,845 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 690 transitions. Word has length 454 [2023-12-19 06:57:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:57:44,849 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 690 transitions. [2023-12-19 06:57:44,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 06:57:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 690 transitions. [2023-12-19 06:57:44,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-19 06:57:44,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:57:44,854 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:44,867 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 06:57:45,067 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 06:57:45,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:57:45,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:57:45,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1862814257, now seen corresponding path program 1 times [2023-12-19 06:57:45,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:57:45,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692454671] [2023-12-19 06:57:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:45,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:57:45,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:57:45,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560071846] [2023-12-19 06:57:45,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:45,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:57:45,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:57:45,144 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 06:57:45,147 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 06:57:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:57:45,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 06:57:45,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:57:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 06:57:45,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:57:45,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:57:45,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692454671] [2023-12-19 06:57:45,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:57:45,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560071846] [2023-12-19 06:57:45,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560071846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:57:45,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:57:45,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 06:57:45,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799566913] [2023-12-19 06:57:45,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:57:45,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 06:57:45,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:57:45,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 06:57:45,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:57:45,969 INFO L87 Difference]: Start difference. First operand 404 states and 690 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 06:57:46,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:57:46,530 INFO L93 Difference]: Finished difference Result 1435 states and 2458 transitions. [2023-12-19 06:57:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 06:57:46,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 455 [2023-12-19 06:57:46,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:57:46,538 INFO L225 Difference]: With dead ends: 1435 [2023-12-19 06:57:46,539 INFO L226 Difference]: Without dead ends: 1032 [2023-12-19 06:57:46,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 06:57:46,542 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 449 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:57:46,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1085 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:57:46,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2023-12-19 06:57:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1023. [2023-12-19 06:57:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 678 states have (on average 1.592920353982301) internal successors, (1080), 680 states have internal predecessors, (1080), 338 states have call successors, (338), 6 states have call predecessors, (338), 6 states have return successors, (338), 336 states have call predecessors, (338), 338 states have call successors, (338) [2023-12-19 06:57:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1756 transitions. [2023-12-19 06:57:46,666 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1756 transitions. Word has length 455 [2023-12-19 06:57:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:57:46,669 INFO L495 AbstractCegarLoop]: Abstraction has 1023 states and 1756 transitions. [2023-12-19 06:57:46,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 06:57:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1756 transitions. [2023-12-19 06:57:46,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-19 06:57:46,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:57:46,676 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:46,684 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 06:57:46,884 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 06:57:46,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:57:46,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:57:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1005226118, now seen corresponding path program 1 times [2023-12-19 06:57:46,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:57:46,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680387382] [2023-12-19 06:57:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:46,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:57:46,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:57:46,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514475761] [2023-12-19 06:57:46,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:46,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:57:46,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:57:46,954 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 06:57:46,973 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 06:57:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:57:47,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 06:57:47,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:57:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 06:57:47,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:57:47,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:57:47,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680387382] [2023-12-19 06:57:47,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:57:47,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514475761] [2023-12-19 06:57:47,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514475761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:57:47,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:57:47,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:57:47,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614518863] [2023-12-19 06:57:47,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:57:47,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:57:47,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:57:47,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:57:47,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:57:47,636 INFO L87 Difference]: Start difference. First operand 1023 states and 1756 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 06:57:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:57:47,858 INFO L93 Difference]: Finished difference Result 2156 states and 3697 transitions. [2023-12-19 06:57:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:57:47,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 455 [2023-12-19 06:57:47,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:57:47,867 INFO L225 Difference]: With dead ends: 2156 [2023-12-19 06:57:47,867 INFO L226 Difference]: Without dead ends: 1134 [2023-12-19 06:57:47,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:57:47,874 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 384 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 06:57:47,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1202 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 06:57:47,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2023-12-19 06:57:47,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1126. [2023-12-19 06:57:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 757 states have (on average 1.5984147952443857) internal successors, (1210), 760 states have internal predecessors, (1210), 361 states have call successors, (361), 7 states have call predecessors, (361), 7 states have return successors, (361), 358 states have call predecessors, (361), 361 states have call successors, (361) [2023-12-19 06:57:47,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1932 transitions. [2023-12-19 06:57:47,967 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1932 transitions. Word has length 455 [2023-12-19 06:57:47,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:57:47,968 INFO L495 AbstractCegarLoop]: Abstraction has 1126 states and 1932 transitions. [2023-12-19 06:57:47,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 06:57:47,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1932 transitions. [2023-12-19 06:57:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 06:57:47,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:57:47,972 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:47,984 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 06:57:48,179 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 06:57:48,180 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:57:48,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:57:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash -11474060, now seen corresponding path program 1 times [2023-12-19 06:57:48,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:57:48,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487997238] [2023-12-19 06:57:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:48,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:57:48,222 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:57:48,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540199397] [2023-12-19 06:57:48,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:48,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:57:48,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:57:48,224 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 06:57:48,243 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 06:57:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:57:48,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 06:57:48,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:57:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 06:57:48,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:57:48,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:57:48,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487997238] [2023-12-19 06:57:48,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:57:48,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540199397] [2023-12-19 06:57:48,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540199397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:57:48,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:57:48,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 06:57:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204197518] [2023-12-19 06:57:48,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:57:48,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:57:48,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:57:48,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:57:48,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:57:48,530 INFO L87 Difference]: Start difference. First operand 1126 states and 1932 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 06:57:48,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:57:48,780 INFO L93 Difference]: Finished difference Result 4776 states and 8160 transitions. [2023-12-19 06:57:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 06:57:48,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 456 [2023-12-19 06:57:48,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:57:48,801 INFO L225 Difference]: With dead ends: 4776 [2023-12-19 06:57:48,801 INFO L226 Difference]: Without dead ends: 3651 [2023-12-19 06:57:48,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:57:48,808 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 701 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 06:57:48,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1260 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 06:57:48,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2023-12-19 06:57:49,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 3637. [2023-12-19 06:57:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3637 states, 2500 states have (on average 1.5896) internal successors, (3974), 2520 states have internal predecessors, (3974), 1108 states have call successors, (1108), 28 states have call predecessors, (1108), 28 states have return successors, (1108), 1088 states have call predecessors, (1108), 1108 states have call successors, (1108) [2023-12-19 06:57:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 6190 transitions. [2023-12-19 06:57:49,160 INFO L78 Accepts]: Start accepts. Automaton has 3637 states and 6190 transitions. Word has length 456 [2023-12-19 06:57:49,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:57:49,161 INFO L495 AbstractCegarLoop]: Abstraction has 3637 states and 6190 transitions. [2023-12-19 06:57:49,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 06:57:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3637 states and 6190 transitions. [2023-12-19 06:57:49,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-19 06:57:49,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:57:49,166 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:49,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 06:57:49,373 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 06:57:49,374 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:57:49,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:57:49,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1599821962, now seen corresponding path program 1 times [2023-12-19 06:57:49,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:57:49,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631962564] [2023-12-19 06:57:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:49,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:57:49,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:57:49,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185768084] [2023-12-19 06:57:49,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:49,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:57:49,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:57:49,415 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 06:57:49,436 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 06:57:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:57:49,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:57:49,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:57:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 5218 proven. 123 refuted. 0 times theorem prover too weak. 5171 trivial. 0 not checked. [2023-12-19 06:57:50,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:57:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 93 proven. 123 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2023-12-19 06:57:50,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:57:50,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631962564] [2023-12-19 06:57:50,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:57:50,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185768084] [2023-12-19 06:57:50,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185768084] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:57:50,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:57:50,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 06:57:50,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642943491] [2023-12-19 06:57:50,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:57:50,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:57:50,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:57:50,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:57:50,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:57:50,316 INFO L87 Difference]: Start difference. First operand 3637 states and 6190 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2023-12-19 06:57:50,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:57:50,783 INFO L93 Difference]: Finished difference Result 5931 states and 10068 transitions. [2023-12-19 06:57:50,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 06:57:50,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 456 [2023-12-19 06:57:50,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:57:50,797 INFO L225 Difference]: With dead ends: 5931 [2023-12-19 06:57:50,797 INFO L226 Difference]: Without dead ends: 2295 [2023-12-19 06:57:50,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 904 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:57:50,810 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 348 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:57:50,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 633 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:57:50,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2023-12-19 06:57:51,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2267. [2023-12-19 06:57:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 1522 states have (on average 1.5630749014454666) internal successors, (2379), 1528 states have internal predecessors, (2379), 722 states have call successors, (722), 22 states have call predecessors, (722), 22 states have return successors, (722), 716 states have call predecessors, (722), 722 states have call successors, (722) [2023-12-19 06:57:51,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 3823 transitions. [2023-12-19 06:57:51,165 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 3823 transitions. Word has length 456 [2023-12-19 06:57:51,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:57:51,166 INFO L495 AbstractCegarLoop]: Abstraction has 2267 states and 3823 transitions. [2023-12-19 06:57:51,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2023-12-19 06:57:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 3823 transitions. [2023-12-19 06:57:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-19 06:57:51,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:57:51,172 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:51,182 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 06:57:51,379 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 06:57:51,380 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:57:51,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:57:51,381 INFO L85 PathProgramCache]: Analyzing trace with hash 858918671, now seen corresponding path program 1 times [2023-12-19 06:57:51,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:57:51,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706234055] [2023-12-19 06:57:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:51,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:57:51,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:57:51,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517701525] [2023-12-19 06:57:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:51,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:57:51,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:57:51,437 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 06:57:51,441 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 06:57:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:57:51,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:57:51,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:57:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 2676 proven. 30 refuted. 0 times theorem prover too weak. 7806 trivial. 0 not checked. [2023-12-19 06:57:51,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:57:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 186 proven. 30 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2023-12-19 06:57:52,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:57:52,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706234055] [2023-12-19 06:57:52,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:57:52,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517701525] [2023-12-19 06:57:52,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517701525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:57:52,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:57:52,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 06:57:52,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842824850] [2023-12-19 06:57:52,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:57:52,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:57:52,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:57:52,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:57:52,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:57:52,075 INFO L87 Difference]: Start difference. First operand 2267 states and 3823 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2023-12-19 06:57:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:57:52,565 INFO L93 Difference]: Finished difference Result 4609 states and 7713 transitions. [2023-12-19 06:57:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 06:57:52,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 458 [2023-12-19 06:57:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:57:52,582 INFO L225 Difference]: With dead ends: 4609 [2023-12-19 06:57:52,582 INFO L226 Difference]: Without dead ends: 2343 [2023-12-19 06:57:52,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 908 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:57:52,591 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 387 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:57:52,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 628 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:57:52,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2023-12-19 06:57:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2299. [2023-12-19 06:57:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1546 states have (on average 1.5452781371280724) internal successors, (2389), 1552 states have internal predecessors, (2389), 722 states have call successors, (722), 30 states have call predecessors, (722), 30 states have return successors, (722), 716 states have call predecessors, (722), 722 states have call successors, (722) [2023-12-19 06:57:52,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3833 transitions. [2023-12-19 06:57:52,800 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3833 transitions. Word has length 458 [2023-12-19 06:57:52,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:57:52,801 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 3833 transitions. [2023-12-19 06:57:52,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2023-12-19 06:57:52,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3833 transitions. [2023-12-19 06:57:52,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-12-19 06:57:52,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:57:52,806 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:52,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 06:57:53,017 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 06:57:53,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:57:53,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:57:53,018 INFO L85 PathProgramCache]: Analyzing trace with hash 999467281, now seen corresponding path program 1 times [2023-12-19 06:57:53,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:57:53,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573626501] [2023-12-19 06:57:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:53,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:57:53,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:57:53,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420830494] [2023-12-19 06:57:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:53,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:57:53,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:57:53,058 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 06:57:53,079 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 06:57:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:57:53,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 06:57:53,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:57:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 6958 proven. 63 refuted. 0 times theorem prover too weak. 3491 trivial. 0 not checked. [2023-12-19 06:57:53,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:57:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 06:57:54,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:57:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573626501] [2023-12-19 06:57:54,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:57:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420830494] [2023-12-19 06:57:54,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420830494] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:57:54,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:57:54,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-19 06:57:54,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115272511] [2023-12-19 06:57:54,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:57:54,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:57:54,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:57:54,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:57:54,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 06:57:54,118 INFO L87 Difference]: Start difference. First operand 2299 states and 3833 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 06:57:54,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:57:54,245 INFO L93 Difference]: Finished difference Result 4611 states and 7693 transitions. [2023-12-19 06:57:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:57:54,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 458 [2023-12-19 06:57:54,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:57:54,258 INFO L225 Difference]: With dead ends: 4611 [2023-12-19 06:57:54,258 INFO L226 Difference]: Without dead ends: 2313 [2023-12-19 06:57:54,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 06:57:54,267 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 0 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:57:54,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 651 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:57:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2023-12-19 06:57:54,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2313. [2023-12-19 06:57:54,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 1560 states have (on average 1.5403846153846155) internal successors, (2403), 1566 states have internal predecessors, (2403), 722 states have call successors, (722), 30 states have call predecessors, (722), 30 states have return successors, (722), 716 states have call predecessors, (722), 722 states have call successors, (722) [2023-12-19 06:57:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3847 transitions. [2023-12-19 06:57:54,485 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3847 transitions. Word has length 458 [2023-12-19 06:57:54,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:57:54,485 INFO L495 AbstractCegarLoop]: Abstraction has 2313 states and 3847 transitions. [2023-12-19 06:57:54,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 06:57:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3847 transitions. [2023-12-19 06:57:54,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-12-19 06:57:54,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:57:54,490 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:54,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 06:57:54,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 06:57:54,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:57:54,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:57:54,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2059525384, now seen corresponding path program 1 times [2023-12-19 06:57:54,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:57:54,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286135779] [2023-12-19 06:57:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:54,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:57:54,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:57:54,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022621386] [2023-12-19 06:57:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:54,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:57:54,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:57:54,743 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:57:54,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 06:57:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:57:55,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 06:57:55,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:57:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 7927 proven. 63 refuted. 0 times theorem prover too weak. 2522 trivial. 0 not checked. [2023-12-19 06:57:56,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:57:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 153 proven. 63 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2023-12-19 06:57:56,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:57:56,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286135779] [2023-12-19 06:57:56,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:57:56,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022621386] [2023-12-19 06:57:56,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022621386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:57:56,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:57:56,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-12-19 06:57:56,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029303171] [2023-12-19 06:57:56,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:57:56,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 06:57:56,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:57:56,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 06:57:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-19 06:57:56,518 INFO L87 Difference]: Start difference. First operand 2313 states and 3847 transitions. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 6 states have call successors, (126), 4 states have call predecessors, (126), 6 states have return successors, (126), 6 states have call predecessors, (126), 6 states have call successors, (126) [2023-12-19 06:57:57,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:57:57,415 INFO L93 Difference]: Finished difference Result 4715 states and 7789 transitions. [2023-12-19 06:57:57,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 06:57:57,423 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 6 states have call successors, (126), 4 states have call predecessors, (126), 6 states have return successors, (126), 6 states have call predecessors, (126), 6 states have call successors, (126) Word has length 459 [2023-12-19 06:57:57,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:57:57,438 INFO L225 Difference]: With dead ends: 4715 [2023-12-19 06:57:57,439 INFO L226 Difference]: Without dead ends: 2403 [2023-12-19 06:57:57,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2023-12-19 06:57:57,447 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 698 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:57:57,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 880 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 06:57:57,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2023-12-19 06:57:57,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2345. [2023-12-19 06:57:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 1584 states have (on average 1.5321969696969697) internal successors, (2427), 1590 states have internal predecessors, (2427), 722 states have call successors, (722), 38 states have call predecessors, (722), 38 states have return successors, (722), 716 states have call predecessors, (722), 722 states have call successors, (722) [2023-12-19 06:57:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 3871 transitions. [2023-12-19 06:57:57,683 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 3871 transitions. Word has length 459 [2023-12-19 06:57:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:57:57,684 INFO L495 AbstractCegarLoop]: Abstraction has 2345 states and 3871 transitions. [2023-12-19 06:57:57,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 6 states have call successors, (126), 4 states have call predecessors, (126), 6 states have return successors, (126), 6 states have call predecessors, (126), 6 states have call successors, (126) [2023-12-19 06:57:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 3871 transitions. [2023-12-19 06:57:57,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-12-19 06:57:57,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:57:57,689 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:57,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 06:57:57,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:57:57,896 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:57:57,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:57:57,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1030166086, now seen corresponding path program 1 times [2023-12-19 06:57:57,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:57:57,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898423952] [2023-12-19 06:57:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:57,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:57:57,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:57:57,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385036359] [2023-12-19 06:57:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:57:57,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:57:57,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:57:57,939 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:57:57,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 06:57:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:57:58,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 06:57:58,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:57:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 8328 proven. 99 refuted. 0 times theorem prover too weak. 2085 trivial. 0 not checked. [2023-12-19 06:57:59,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:58:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 327 proven. 102 refuted. 0 times theorem prover too weak. 10083 trivial. 0 not checked. [2023-12-19 06:58:00,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:58:00,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898423952] [2023-12-19 06:58:00,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:58:00,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385036359] [2023-12-19 06:58:00,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385036359] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:58:00,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:58:00,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2023-12-19 06:58:00,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186802628] [2023-12-19 06:58:00,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:58:00,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 06:58:00,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:58:00,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 06:58:00,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2023-12-19 06:58:00,204 INFO L87 Difference]: Start difference. First operand 2345 states and 3871 transitions. Second operand has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 23 states have internal predecessors, (174), 8 states have call successors, (126), 5 states have call predecessors, (126), 9 states have return successors, (126), 8 states have call predecessors, (126), 8 states have call successors, (126) [2023-12-19 06:58:02,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:58:02,816 INFO L93 Difference]: Finished difference Result 11027 states and 18149 transitions. [2023-12-19 06:58:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-19 06:58:02,824 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 23 states have internal predecessors, (174), 8 states have call successors, (126), 5 states have call predecessors, (126), 9 states have return successors, (126), 8 states have call predecessors, (126), 8 states have call successors, (126) Word has length 459 [2023-12-19 06:58:02,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:58:02,880 INFO L225 Difference]: With dead ends: 11027 [2023-12-19 06:58:02,881 INFO L226 Difference]: Without dead ends: 8683 [2023-12-19 06:58:02,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 899 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=830, Invalid=1720, Unknown=0, NotChecked=0, Total=2550 [2023-12-19 06:58:02,892 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 3188 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 1086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3255 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 3025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1086 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:58:02,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3255 Valid, 1968 Invalid, 3025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1086 Valid, 1939 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 06:58:02,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8683 states. [2023-12-19 06:58:03,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8683 to 3853. [2023-12-19 06:58:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3853 states, 2846 states have (on average 1.583274771609276) internal successors, (4506), 2866 states have internal predecessors, (4506), 946 states have call successors, (946), 60 states have call predecessors, (946), 60 states have return successors, (946), 926 states have call predecessors, (946), 946 states have call successors, (946) [2023-12-19 06:58:03,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3853 states to 3853 states and 6398 transitions. [2023-12-19 06:58:03,385 INFO L78 Accepts]: Start accepts. Automaton has 3853 states and 6398 transitions. Word has length 459 [2023-12-19 06:58:03,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:58:03,386 INFO L495 AbstractCegarLoop]: Abstraction has 3853 states and 6398 transitions. [2023-12-19 06:58:03,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.565217391304348) internal successors, (174), 23 states have internal predecessors, (174), 8 states have call successors, (126), 5 states have call predecessors, (126), 9 states have return successors, (126), 8 states have call predecessors, (126), 8 states have call successors, (126) [2023-12-19 06:58:03,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3853 states and 6398 transitions. [2023-12-19 06:58:03,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-12-19 06:58:03,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:58:03,392 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:03,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 06:58:03,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 06:58:03,601 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:58:03,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:58:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1731765960, now seen corresponding path program 1 times [2023-12-19 06:58:03,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:58:03,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110350529] [2023-12-19 06:58:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:58:03,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:58:03,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:58:03,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088692373] [2023-12-19 06:58:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:58:03,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:58:03,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:58:03,647 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:58:03,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 06:58:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:58:03,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 06:58:03,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:58:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 4822 proven. 150 refuted. 0 times theorem prover too weak. 5540 trivial. 0 not checked. [2023-12-19 06:58:04,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:58:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 06:58:05,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:58:05,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110350529] [2023-12-19 06:58:05,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:58:05,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088692373] [2023-12-19 06:58:05,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088692373] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:58:05,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:58:05,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-19 06:58:05,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783368723] [2023-12-19 06:58:05,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:58:05,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 06:58:05,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:58:05,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 06:58:05,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:58:05,639 INFO L87 Difference]: Start difference. First operand 3853 states and 6398 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2023-12-19 06:58:06,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:58:06,566 INFO L93 Difference]: Finished difference Result 10669 states and 17822 transitions. [2023-12-19 06:58:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:58:06,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 459 [2023-12-19 06:58:06,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:58:06,598 INFO L225 Difference]: With dead ends: 10669 [2023-12-19 06:58:06,598 INFO L226 Difference]: Without dead ends: 6817 [2023-12-19 06:58:06,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 909 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:58:06,629 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 873 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 06:58:06,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 544 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 06:58:06,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6817 states. [2023-12-19 06:58:07,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6817 to 6801. [2023-12-19 06:58:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6801 states, 5290 states have (on average 1.6139886578449905) internal successors, (8538), 5338 states have internal predecessors, (8538), 1422 states have call successors, (1422), 88 states have call predecessors, (1422), 88 states have return successors, (1422), 1374 states have call predecessors, (1422), 1422 states have call successors, (1422) [2023-12-19 06:58:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6801 states to 6801 states and 11382 transitions. [2023-12-19 06:58:07,248 INFO L78 Accepts]: Start accepts. Automaton has 6801 states and 11382 transitions. Word has length 459 [2023-12-19 06:58:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:58:07,249 INFO L495 AbstractCegarLoop]: Abstraction has 6801 states and 11382 transitions. [2023-12-19 06:58:07,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2023-12-19 06:58:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6801 states and 11382 transitions. [2023-12-19 06:58:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-12-19 06:58:07,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:58:07,259 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:07,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 06:58:07,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 06:58:07,473 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:58:07,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:58:07,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1597752454, now seen corresponding path program 1 times [2023-12-19 06:58:07,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:58:07,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421656276] [2023-12-19 06:58:07,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:58:07,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:58:07,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:58:07,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391855067] [2023-12-19 06:58:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:58:07,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:58:07,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:58:07,521 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:58:07,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 06:58:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:58:07,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 06:58:07,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:58:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 3960 proven. 0 refuted. 0 times theorem prover too weak. 6552 trivial. 0 not checked. [2023-12-19 06:58:08,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:58:08,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:58:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421656276] [2023-12-19 06:58:08,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:58:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391855067] [2023-12-19 06:58:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391855067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:58:08,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:58:08,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 06:58:08,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400730117] [2023-12-19 06:58:08,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:58:08,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 06:58:08,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:58:08,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 06:58:08,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 06:58:08,232 INFO L87 Difference]: Start difference. First operand 6801 states and 11382 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-19 06:58:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:58:09,687 INFO L93 Difference]: Finished difference Result 14842 states and 24998 transitions. [2023-12-19 06:58:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 06:58:09,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 459 [2023-12-19 06:58:09,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:58:09,723 INFO L225 Difference]: With dead ends: 14842 [2023-12-19 06:58:09,723 INFO L226 Difference]: Without dead ends: 11806 [2023-12-19 06:58:09,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:58:09,735 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 962 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 06:58:09,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1522 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 06:58:09,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11806 states. [2023-12-19 06:58:10,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11806 to 7093. [2023-12-19 06:58:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7093 states, 5582 states have (on average 1.6252239340738086) internal successors, (9072), 5630 states have internal predecessors, (9072), 1422 states have call successors, (1422), 88 states have call predecessors, (1422), 88 states have return successors, (1422), 1374 states have call predecessors, (1422), 1422 states have call successors, (1422) [2023-12-19 06:58:10,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 11916 transitions. [2023-12-19 06:58:10,374 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 11916 transitions. Word has length 459 [2023-12-19 06:58:10,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:58:10,375 INFO L495 AbstractCegarLoop]: Abstraction has 7093 states and 11916 transitions. [2023-12-19 06:58:10,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 2 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2023-12-19 06:58:10,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 11916 transitions. [2023-12-19 06:58:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-12-19 06:58:10,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:58:10,385 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:10,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 06:58:10,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 06:58:10,597 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:58:10,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:58:10,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1144299074, now seen corresponding path program 1 times [2023-12-19 06:58:10,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:58:10,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536119204] [2023-12-19 06:58:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:58:10,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:58:10,642 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:58:10,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087584932] [2023-12-19 06:58:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:58:10,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:58:10,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:58:10,644 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:58:10,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 06:58:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:58:10,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 06:58:10,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:58:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 6912 proven. 93 refuted. 0 times theorem prover too weak. 3507 trivial. 0 not checked. [2023-12-19 06:58:12,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:58:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 06:58:13,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:58:13,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536119204] [2023-12-19 06:58:13,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:58:13,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087584932] [2023-12-19 06:58:13,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087584932] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:58:13,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:58:13,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2023-12-19 06:58:13,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722143294] [2023-12-19 06:58:13,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:58:13,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 06:58:13,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:58:13,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 06:58:13,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-12-19 06:58:13,133 INFO L87 Difference]: Start difference. First operand 7093 states and 11916 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 3 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2023-12-19 06:58:16,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:58:16,210 INFO L93 Difference]: Finished difference Result 30990 states and 51817 transitions. [2023-12-19 06:58:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 06:58:16,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 3 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 459 [2023-12-19 06:58:16,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:58:16,294 INFO L225 Difference]: With dead ends: 30990 [2023-12-19 06:58:16,294 INFO L226 Difference]: Without dead ends: 23898 [2023-12-19 06:58:16,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 907 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2023-12-19 06:58:16,324 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 1464 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 800 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 800 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:58:16,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1308 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [800 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 06:58:16,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23898 states. [2023-12-19 06:58:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23898 to 11623. [2023-12-19 06:58:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11623 states, 9051 states have (on average 1.6031377748315103) internal successors, (14510), 9142 states have internal predecessors, (14510), 2401 states have call successors, (2401), 170 states have call predecessors, (2401), 170 states have return successors, (2401), 2310 states have call predecessors, (2401), 2401 states have call successors, (2401) [2023-12-19 06:58:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11623 states to 11623 states and 19312 transitions. [2023-12-19 06:58:17,966 INFO L78 Accepts]: Start accepts. Automaton has 11623 states and 19312 transitions. Word has length 459 [2023-12-19 06:58:17,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:58:17,966 INFO L495 AbstractCegarLoop]: Abstraction has 11623 states and 19312 transitions. [2023-12-19 06:58:17,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 3 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2023-12-19 06:58:17,967 INFO L276 IsEmpty]: Start isEmpty. Operand 11623 states and 19312 transitions. [2023-12-19 06:58:17,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-12-19 06:58:17,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:58:17,980 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:17,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 06:58:18,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 06:58:18,192 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:58:18,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:58:18,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1845898948, now seen corresponding path program 1 times [2023-12-19 06:58:18,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:58:18,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553250260] [2023-12-19 06:58:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:58:18,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:58:18,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:58:18,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313730879] [2023-12-19 06:58:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:58:18,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:58:18,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:58:18,237 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:58:18,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 06:58:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:58:18,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 06:58:18,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:58:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-12-19 06:58:19,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:58:19,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:58:19,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553250260] [2023-12-19 06:58:19,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:58:19,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313730879] [2023-12-19 06:58:19,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313730879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:58:19,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:58:19,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:58:19,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362256716] [2023-12-19 06:58:19,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:58:19,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:58:19,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:58:19,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:58:19,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:58:19,011 INFO L87 Difference]: Start difference. First operand 11623 states and 19312 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 06:58:20,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:58:20,806 INFO L93 Difference]: Finished difference Result 29555 states and 49235 transitions. [2023-12-19 06:58:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:58:20,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 459 [2023-12-19 06:58:20,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:58:20,866 INFO L225 Difference]: With dead ends: 29555 [2023-12-19 06:58:20,866 INFO L226 Difference]: Without dead ends: 17964 [2023-12-19 06:58:20,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:58:20,893 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 460 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:58:20,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 852 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 06:58:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17964 states. [2023-12-19 06:58:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17964 to 15224. [2023-12-19 06:58:22,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15224 states, 11368 states have (on average 1.563423645320197) internal successors, (17773), 11487 states have internal predecessors, (17773), 3576 states have call successors, (3576), 279 states have call predecessors, (3576), 279 states have return successors, (3576), 3457 states have call predecessors, (3576), 3576 states have call successors, (3576) [2023-12-19 06:58:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15224 states to 15224 states and 24925 transitions. [2023-12-19 06:58:22,903 INFO L78 Accepts]: Start accepts. Automaton has 15224 states and 24925 transitions. Word has length 459 [2023-12-19 06:58:22,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:58:22,904 INFO L495 AbstractCegarLoop]: Abstraction has 15224 states and 24925 transitions. [2023-12-19 06:58:22,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-12-19 06:58:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 15224 states and 24925 transitions. [2023-12-19 06:58:22,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-12-19 06:58:22,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:58:22,916 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:22,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 06:58:23,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:58:23,125 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:58:23,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:58:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash -938238432, now seen corresponding path program 1 times [2023-12-19 06:58:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:58:23,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411027155] [2023-12-19 06:58:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:58:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:58:23,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:58:23,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511248031] [2023-12-19 06:58:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:58:23,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:58:23,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:58:23,170 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:58:23,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 06:58:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:58:23,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-19 06:58:23,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:58:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 1805 proven. 597 refuted. 0 times theorem prover too weak. 8110 trivial. 0 not checked. [2023-12-19 06:58:26,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 07:11:48,815 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 07:11:48,815 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 07:11:48,902 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 07:11:48,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 07:11:49,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 07:11:49,111 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 461 with TraceHistMax 73,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-46-6-2-6-5-6-5-6-5-6-5-6-5-6-5-5-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-2-1 context. [2023-12-19 07:11:49,115 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:11:49,117 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 07:11:49,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 07:11:49 BoogieIcfgContainer [2023-12-19 07:11:49,122 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 07:11:49,122 INFO L158 Benchmark]: Toolchain (without parser) took 848466.53ms. Allocated memory was 281.0MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 227.7MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-12-19 07:11:49,125 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 207.6MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 07:11:49,125 INFO L158 Benchmark]: CACSL2BoogieTranslator took 450.88ms. Allocated memory is still 281.0MB. Free memory was 227.4MB in the beginning and 205.1MB in the end (delta: 22.3MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-19 07:11:49,125 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.25ms. Allocated memory is still 281.0MB. Free memory was 205.1MB in the beginning and 198.3MB in the end (delta: 6.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-19 07:11:49,125 INFO L158 Benchmark]: Boogie Preprocessor took 79.68ms. Allocated memory is still 281.0MB. Free memory was 198.0MB in the beginning and 190.0MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-19 07:11:49,126 INFO L158 Benchmark]: RCFGBuilder took 927.50ms. Allocated memory is still 281.0MB. Free memory was 190.0MB in the beginning and 200.6MB in the end (delta: -10.7MB). Peak memory consumption was 18.5MB. Max. memory is 8.0GB. [2023-12-19 07:11:49,126 INFO L158 Benchmark]: TraceAbstraction took 846919.61ms. Allocated memory was 281.0MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 200.1MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-12-19 07:11:49,127 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 207.6MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 450.88ms. Allocated memory is still 281.0MB. Free memory was 227.4MB in the beginning and 205.1MB in the end (delta: 22.3MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 81.25ms. Allocated memory is still 281.0MB. Free memory was 205.1MB in the beginning and 198.3MB in the end (delta: 6.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 79.68ms. Allocated memory is still 281.0MB. Free memory was 198.0MB in the beginning and 190.0MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 927.50ms. Allocated memory is still 281.0MB. Free memory was 190.0MB in the beginning and 200.6MB in the end (delta: -10.7MB). Peak memory consumption was 18.5MB. Max. memory is 8.0GB. * TraceAbstraction took 846919.61ms. Allocated memory was 281.0MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 200.1MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 461 with TraceHistMax 73,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-46-6-2-6-5-6-5-6-5-6-5-6-5-6-5-5-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-6-5-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 206 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 846.9s, OverallIterations: 15, TraceHistogramMax: 73, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10258 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10048 mSDsluCounter, 13605 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8145 mSDsCounter, 2716 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5873 IncrementalHoareTripleChecker+Invalid, 8589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2716 mSolverCounterUnsat, 5460 mSDtfsCounter, 5873 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9653 GetRequests, 9511 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15224occurred in iteration=14, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 24738 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 6854 NumberOfCodeBlocks, 6854 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 9587 ConstructedInterpolants, 0 QuantifiedInterpolants, 37045 SizeOfPredicates, 46 NumberOfNonLiveVariables, 14730 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 21 InterpolantComputations, 10 PerfectInterpolantSequences, 219813/220752 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown