/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_operatoramount_amount500_file-65.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 14:08:40,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 14:08:40,164 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 14:08:40,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 14:08:40,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 14:08:40,196 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 14:08:40,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 14:08:40,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 14:08:40,197 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 14:08:40,201 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 14:08:40,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 14:08:40,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 14:08:40,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 14:08:40,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 14:08:40,203 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 14:08:40,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 14:08:40,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 14:08:40,204 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 14:08:40,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 14:08:40,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 14:08:40,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 14:08:40,206 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 14:08:40,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 14:08:40,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 14:08:40,207 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 14:08:40,207 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 14:08:40,207 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 14:08:40,207 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 14:08:40,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 14:08:40,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 14:08:40,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 14:08:40,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 14:08:40,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:08:40,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 14:08:40,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 14:08:40,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 14:08:40,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 14:08:40,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 14:08:40,210 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 14:08:40,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 14:08:40,211 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 14:08:40,211 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 14:08:40,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 14:08:40,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 14:08:40,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 14:08:40,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 14:08:40,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 14:08:40,470 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 14:08:40,470 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 14:08:40,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-65.i [2023-12-19 14:08:41,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 14:08:41,868 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 14:08:41,868 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-65.i [2023-12-19 14:08:41,883 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03157fdf2/8df1c58ddd3844f8a7c16fc30719e2d4/FLAG1035f5787 [2023-12-19 14:08:41,894 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03157fdf2/8df1c58ddd3844f8a7c16fc30719e2d4 [2023-12-19 14:08:41,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 14:08:41,897 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 14:08:41,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 14:08:41,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 14:08:41,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 14:08:41,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:08:41" (1/1) ... [2023-12-19 14:08:41,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36dd5a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:41, skipping insertion in model container [2023-12-19 14:08:41,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:08:41" (1/1) ... [2023-12-19 14:08:41,966 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 14:08:42,101 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-65.i[916,929] [2023-12-19 14:08:42,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:08:42,330 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 14:08:42,340 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-65.i[916,929] [2023-12-19 14:08:42,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 14:08:42,490 INFO L206 MainTranslator]: Completed translation [2023-12-19 14:08:42,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42 WrapperNode [2023-12-19 14:08:42,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 14:08:42,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 14:08:42,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 14:08:42,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 14:08:42,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (1/1) ... [2023-12-19 14:08:42,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (1/1) ... [2023-12-19 14:08:42,673 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 752 [2023-12-19 14:08:42,674 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 14:08:42,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 14:08:42,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 14:08:42,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 14:08:42,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (1/1) ... [2023-12-19 14:08:42,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (1/1) ... [2023-12-19 14:08:42,761 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (1/1) ... [2023-12-19 14:08:42,814 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 14:08:42,814 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (1/1) ... [2023-12-19 14:08:42,814 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (1/1) ... [2023-12-19 14:08:42,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (1/1) ... [2023-12-19 14:08:42,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (1/1) ... [2023-12-19 14:08:42,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (1/1) ... [2023-12-19 14:08:42,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (1/1) ... [2023-12-19 14:08:42,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 14:08:42,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 14:08:42,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 14:08:42,893 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 14:08:42,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (1/1) ... [2023-12-19 14:08:42,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 14:08:42,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:42,940 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 14:08:42,952 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 14:08:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 14:08:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 14:08:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 14:08:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 14:08:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 14:08:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 14:08:43,115 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 14:08:43,119 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 14:08:44,179 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 14:08:44,229 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 14:08:44,230 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 14:08:44,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:08:44 BoogieIcfgContainer [2023-12-19 14:08:44,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 14:08:44,232 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 14:08:44,232 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 14:08:44,235 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 14:08:44,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:08:41" (1/3) ... [2023-12-19 14:08:44,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3faabd12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:08:44, skipping insertion in model container [2023-12-19 14:08:44,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:08:42" (2/3) ... [2023-12-19 14:08:44,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3faabd12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:08:44, skipping insertion in model container [2023-12-19 14:08:44,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:08:44" (3/3) ... [2023-12-19 14:08:44,237 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-65.i [2023-12-19 14:08:44,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 14:08:44,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 14:08:44,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 14:08:44,317 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;@3c498274, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 14:08:44,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 14:08:44,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 277 states, 214 states have (on average 1.6074766355140186) internal successors, (344), 215 states have internal predecessors, (344), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-19 14:08:44,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-19 14:08:44,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:44,365 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:44,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:44,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:44,373 INFO L85 PathProgramCache]: Analyzing trace with hash -860169103, now seen corresponding path program 1 times [2023-12-19 14:08:44,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:44,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247580605] [2023-12-19 14:08:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:44,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:44,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:44,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247580605] [2023-12-19 14:08:44,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 14:08:44,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024053086] [2023-12-19 14:08:44,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:44,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:44,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:44,653 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 14:08:44,676 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 14:08:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:45,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 14:08:45,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2023-12-19 14:08:45,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:45,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024053086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:45,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:45,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 14:08:45,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663907587] [2023-12-19 14:08:45,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:45,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 14:08:45,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:45,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 14:08:45,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 14:08:45,181 INFO L87 Difference]: Start difference. First operand has 277 states, 214 states have (on average 1.6074766355140186) internal successors, (344), 215 states have internal predecessors, (344), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Second operand has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-19 14:08:45,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:45,258 INFO L93 Difference]: Finished difference Result 551 states and 986 transitions. [2023-12-19 14:08:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 14:08:45,261 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) Word has length 433 [2023-12-19 14:08:45,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:45,269 INFO L225 Difference]: With dead ends: 551 [2023-12-19 14:08:45,269 INFO L226 Difference]: Without dead ends: 275 [2023-12-19 14:08:45,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 432 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 14:08:45,277 INFO L413 NwaCegarLoop]: 455 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, 455 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 14:08:45,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 455 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:08:45,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-19 14:08:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2023-12-19 14:08:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 213 states have (on average 1.5868544600938967) internal successors, (338), 213 states have internal predecessors, (338), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-19 14:08:45,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 458 transitions. [2023-12-19 14:08:45,347 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 458 transitions. Word has length 433 [2023-12-19 14:08:45,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:45,348 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 458 transitions. [2023-12-19 14:08:45,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.0) internal successors, (138), 2 states have internal predecessors, (138), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-19 14:08:45,349 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 458 transitions. [2023-12-19 14:08:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-19 14:08:45,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:45,357 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:45,371 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 14:08:45,571 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 14:08:45,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:45,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:45,572 INFO L85 PathProgramCache]: Analyzing trace with hash -509127267, now seen corresponding path program 1 times [2023-12-19 14:08:45,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:45,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333713762] [2023-12-19 14:08:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:45,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:45,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:45,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296878556] [2023-12-19 14:08:45,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:45,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:45,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:45,731 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 14:08:45,752 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 14:08:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:46,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 14:08:46,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:08:46,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:46,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:46,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333713762] [2023-12-19 14:08:46,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:46,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296878556] [2023-12-19 14:08:46,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296878556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:46,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:46,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:08:46,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356053094] [2023-12-19 14:08:46,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:46,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:08:46,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:46,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:08:46,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:08:46,601 INFO L87 Difference]: Start difference. First operand 275 states and 458 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:46,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:46,890 INFO L93 Difference]: Finished difference Result 991 states and 1657 transitions. [2023-12-19 14:08:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 14:08:46,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 433 [2023-12-19 14:08:46,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:46,896 INFO L225 Difference]: With dead ends: 991 [2023-12-19 14:08:46,896 INFO L226 Difference]: Without dead ends: 717 [2023-12-19 14:08:46,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 430 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 14:08:46,899 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 620 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:46,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 1597 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 14:08:46,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-12-19 14:08:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 689. [2023-12-19 14:08:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 566 states have (on average 1.6201413427561837) internal successors, (917), 566 states have internal predecessors, (917), 120 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-19 14:08:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1157 transitions. [2023-12-19 14:08:46,959 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1157 transitions. Word has length 433 [2023-12-19 14:08:46,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:46,960 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1157 transitions. [2023-12-19 14:08:46,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:46,961 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1157 transitions. [2023-12-19 14:08:46,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-12-19 14:08:46,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:46,967 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:46,978 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 14:08:47,176 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 14:08:47,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:47,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:47,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1981497245, now seen corresponding path program 1 times [2023-12-19 14:08:47,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:47,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153064639] [2023-12-19 14:08:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:47,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:47,243 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:47,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373270567] [2023-12-19 14:08:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:47,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:47,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:47,245 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 14:08:47,263 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 14:08:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:47,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 14:08:47,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:08:47,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:47,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:47,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153064639] [2023-12-19 14:08:47,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:47,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373270567] [2023-12-19 14:08:47,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373270567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:47,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:47,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:08:47,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338183189] [2023-12-19 14:08:47,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:47,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:08:47,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:47,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:08:47,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:08:47,969 INFO L87 Difference]: Start difference. First operand 689 states and 1157 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:48,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:48,320 INFO L93 Difference]: Finished difference Result 2801 states and 4737 transitions. [2023-12-19 14:08:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:08:48,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 434 [2023-12-19 14:08:48,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:48,336 INFO L225 Difference]: With dead ends: 2801 [2023-12-19 14:08:48,337 INFO L226 Difference]: Without dead ends: 2113 [2023-12-19 14:08:48,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 431 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 14:08:48,342 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 1070 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:48,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 1533 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:08:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2023-12-19 14:08:48,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2015. [2023-12-19 14:08:48,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 1770 states have (on average 1.6672316384180792) internal successors, (2951), 1770 states have internal predecessors, (2951), 240 states have call successors, (240), 4 states have call predecessors, (240), 4 states have return successors, (240), 240 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-19 14:08:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3431 transitions. [2023-12-19 14:08:48,482 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3431 transitions. Word has length 434 [2023-12-19 14:08:48,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:48,485 INFO L495 AbstractCegarLoop]: Abstraction has 2015 states and 3431 transitions. [2023-12-19 14:08:48,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3431 transitions. [2023-12-19 14:08:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-12-19 14:08:48,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:48,492 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:48,500 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 14:08:48,700 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 14:08:48,701 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:48,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:48,701 INFO L85 PathProgramCache]: Analyzing trace with hash 17364472, now seen corresponding path program 1 times [2023-12-19 14:08:48,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:48,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655631010] [2023-12-19 14:08:48,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:48,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:48,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:48,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616329914] [2023-12-19 14:08:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:48,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:48,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:48,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:08:48,800 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 14:08:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:49,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 14:08:49,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:08:50,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:50,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:50,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655631010] [2023-12-19 14:08:50,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:50,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616329914] [2023-12-19 14:08:50,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616329914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:50,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:50,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:08:50,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574564596] [2023-12-19 14:08:50,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:50,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:08:50,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:50,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:08:50,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:08:50,026 INFO L87 Difference]: Start difference. First operand 2015 states and 3431 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:50,406 INFO L93 Difference]: Finished difference Result 4731 states and 8039 transitions. [2023-12-19 14:08:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 14:08:50,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 435 [2023-12-19 14:08:50,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:50,419 INFO L225 Difference]: With dead ends: 4731 [2023-12-19 14:08:50,419 INFO L226 Difference]: Without dead ends: 2717 [2023-12-19 14:08:50,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 432 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 14:08:50,428 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 608 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:50,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 1577 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:08:50,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2023-12-19 14:08:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2647. [2023-12-19 14:08:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2341 states have (on average 1.6668090559589919) internal successors, (3902), 2341 states have internal predecessors, (3902), 300 states have call successors, (300), 5 states have call predecessors, (300), 5 states have return successors, (300), 300 states have call predecessors, (300), 300 states have call successors, (300) [2023-12-19 14:08:50,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 4502 transitions. [2023-12-19 14:08:50,564 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 4502 transitions. Word has length 435 [2023-12-19 14:08:50,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:50,565 INFO L495 AbstractCegarLoop]: Abstraction has 2647 states and 4502 transitions. [2023-12-19 14:08:50,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 4502 transitions. [2023-12-19 14:08:50,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-12-19 14:08:50,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:50,572 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:50,584 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 14:08:50,781 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 14:08:50,782 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:50,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:50,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1894427702, now seen corresponding path program 1 times [2023-12-19 14:08:50,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:50,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345181294] [2023-12-19 14:08:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:50,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:50,834 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:50,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948620546] [2023-12-19 14:08:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:50,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:50,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:50,836 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 14:08:50,839 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 14:08:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:51,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 14:08:51,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:08:51,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:51,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:51,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345181294] [2023-12-19 14:08:51,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948620546] [2023-12-19 14:08:51,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948620546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:51,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:51,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:08:51,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722329512] [2023-12-19 14:08:51,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:51,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:08:51,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:51,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:08:51,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:08:51,222 INFO L87 Difference]: Start difference. First operand 2647 states and 4502 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:51,432 INFO L93 Difference]: Finished difference Result 6910 states and 11784 transitions. [2023-12-19 14:08:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:08:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 435 [2023-12-19 14:08:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:51,450 INFO L225 Difference]: With dead ends: 6910 [2023-12-19 14:08:51,450 INFO L226 Difference]: Without dead ends: 4264 [2023-12-19 14:08:51,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 432 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 14:08:51,460 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 177 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:51,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1293 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:08:51,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2023-12-19 14:08:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4193. [2023-12-19 14:08:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4193 states, 3862 states have (on average 1.6841015018125323) internal successors, (6504), 3867 states have internal predecessors, (6504), 320 states have call successors, (320), 10 states have call predecessors, (320), 10 states have return successors, (320), 315 states have call predecessors, (320), 320 states have call successors, (320) [2023-12-19 14:08:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4193 states to 4193 states and 7144 transitions. [2023-12-19 14:08:51,633 INFO L78 Accepts]: Start accepts. Automaton has 4193 states and 7144 transitions. Word has length 435 [2023-12-19 14:08:51,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:51,634 INFO L495 AbstractCegarLoop]: Abstraction has 4193 states and 7144 transitions. [2023-12-19 14:08:51,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4193 states and 7144 transitions. [2023-12-19 14:08:51,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-19 14:08:51,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:51,639 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:51,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 14:08:51,847 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 14:08:51,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:51,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash -39093933, now seen corresponding path program 1 times [2023-12-19 14:08:51,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:51,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172441171] [2023-12-19 14:08:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:51,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:51,895 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:51,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135814586] [2023-12-19 14:08:51,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:51,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:51,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:51,897 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 14:08:51,919 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 14:08:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:52,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:08:52,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:08:52,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:52,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:52,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172441171] [2023-12-19 14:08:52,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:52,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135814586] [2023-12-19 14:08:52,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135814586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:52,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:52,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:08:52,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287225527] [2023-12-19 14:08:52,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:52,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:08:52,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:08:52,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:08:52,290 INFO L87 Difference]: Start difference. First operand 4193 states and 7144 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:52,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:52,487 INFO L93 Difference]: Finished difference Result 11972 states and 20367 transitions. [2023-12-19 14:08:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:08:52,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 436 [2023-12-19 14:08:52,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:52,521 INFO L225 Difference]: With dead ends: 11972 [2023-12-19 14:08:52,521 INFO L226 Difference]: Without dead ends: 7780 [2023-12-19 14:08:52,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 434 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 14:08:52,532 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 428 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:52,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 868 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:08:52,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2023-12-19 14:08:52,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 7770. [2023-12-19 14:08:52,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7770 states, 7109 states have (on average 1.65480376986918) internal successors, (11764), 7119 states have internal predecessors, (11764), 640 states have call successors, (640), 20 states have call predecessors, (640), 20 states have return successors, (640), 630 states have call predecessors, (640), 640 states have call successors, (640) [2023-12-19 14:08:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 13044 transitions. [2023-12-19 14:08:52,863 INFO L78 Accepts]: Start accepts. Automaton has 7770 states and 13044 transitions. Word has length 436 [2023-12-19 14:08:52,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:52,864 INFO L495 AbstractCegarLoop]: Abstraction has 7770 states and 13044 transitions. [2023-12-19 14:08:52,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:52,865 INFO L276 IsEmpty]: Start isEmpty. Operand 7770 states and 13044 transitions. [2023-12-19 14:08:52,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-19 14:08:52,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:52,871 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:52,882 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 14:08:53,080 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 14:08:53,081 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:53,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1773198383, now seen corresponding path program 1 times [2023-12-19 14:08:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:53,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294134162] [2023-12-19 14:08:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:53,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:53,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:53,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304810979] [2023-12-19 14:08:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:53,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:53,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:53,137 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 14:08:53,157 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 14:08:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:53,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:08:53,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:08:53,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:53,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:53,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294134162] [2023-12-19 14:08:53,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:53,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304810979] [2023-12-19 14:08:53,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304810979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:53,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:53,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:08:53,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28818051] [2023-12-19 14:08:53,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:53,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:08:53,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:53,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:08:53,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:08:53,494 INFO L87 Difference]: Start difference. First operand 7770 states and 13044 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:53,777 INFO L93 Difference]: Finished difference Result 21579 states and 36156 transitions. [2023-12-19 14:08:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:08:53,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 436 [2023-12-19 14:08:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:53,841 INFO L225 Difference]: With dead ends: 21579 [2023-12-19 14:08:53,841 INFO L226 Difference]: Without dead ends: 13810 [2023-12-19 14:08:53,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 434 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 14:08:53,864 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 440 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:53,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1099 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:08:53,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13810 states. [2023-12-19 14:08:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13810 to 13808. [2023-12-19 14:08:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13808 states, 12685 states have (on average 1.6323216397319669) internal successors, (20706), 12702 states have internal predecessors, (20706), 1088 states have call successors, (1088), 34 states have call predecessors, (1088), 34 states have return successors, (1088), 1071 states have call predecessors, (1088), 1088 states have call successors, (1088) [2023-12-19 14:08:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13808 states to 13808 states and 22882 transitions. [2023-12-19 14:08:54,321 INFO L78 Accepts]: Start accepts. Automaton has 13808 states and 22882 transitions. Word has length 436 [2023-12-19 14:08:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:54,322 INFO L495 AbstractCegarLoop]: Abstraction has 13808 states and 22882 transitions. [2023-12-19 14:08:54,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:54,322 INFO L276 IsEmpty]: Start isEmpty. Operand 13808 states and 22882 transitions. [2023-12-19 14:08:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-19 14:08:54,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:54,331 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:54,339 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 14:08:54,539 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 14:08:54,539 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:54,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:54,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1827591281, now seen corresponding path program 1 times [2023-12-19 14:08:54,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:54,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633754781] [2023-12-19 14:08:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:54,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:54,595 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:54,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515245070] [2023-12-19 14:08:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:54,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:54,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:54,598 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 14:08:54,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 14:08:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:54,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:08:54,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:08:55,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:55,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:55,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633754781] [2023-12-19 14:08:55,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:55,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515245070] [2023-12-19 14:08:55,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515245070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:55,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:55,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:08:55,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554892536] [2023-12-19 14:08:55,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:55,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:08:55,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:55,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:08:55,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:08:55,935 INFO L87 Difference]: Start difference. First operand 13808 states and 22882 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:56,571 INFO L93 Difference]: Finished difference Result 34869 states and 57872 transitions. [2023-12-19 14:08:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 14:08:56,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 436 [2023-12-19 14:08:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:56,620 INFO L225 Difference]: With dead ends: 34869 [2023-12-19 14:08:56,621 INFO L226 Difference]: Without dead ends: 21062 [2023-12-19 14:08:56,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 433 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 14:08:56,643 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 936 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:56,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1356 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:08:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21062 states. [2023-12-19 14:08:57,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21062 to 20052. [2023-12-19 14:08:57,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20052 states, 18467 states have (on average 1.6276601505387989) internal successors, (30058), 18491 states have internal predecessors, (30058), 1536 states have call successors, (1536), 48 states have call predecessors, (1536), 48 states have return successors, (1536), 1512 states have call predecessors, (1536), 1536 states have call successors, (1536) [2023-12-19 14:08:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20052 states to 20052 states and 33130 transitions. [2023-12-19 14:08:57,270 INFO L78 Accepts]: Start accepts. Automaton has 20052 states and 33130 transitions. Word has length 436 [2023-12-19 14:08:57,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:08:57,270 INFO L495 AbstractCegarLoop]: Abstraction has 20052 states and 33130 transitions. [2023-12-19 14:08:57,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 20052 states and 33130 transitions. [2023-12-19 14:08:57,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-19 14:08:57,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:08:57,334 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:57,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 14:08:57,535 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 14:08:57,535 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:08:57,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:08:57,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1513435857, now seen corresponding path program 1 times [2023-12-19 14:08:57,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:08:57,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995558586] [2023-12-19 14:08:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:57,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:08:57,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:08:57,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090249594] [2023-12-19 14:08:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:08:57,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:08:57,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:08:57,605 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 14:08:57,621 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 14:08:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:08:57,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 14:08:57,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:08:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:08:58,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:08:58,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:08:58,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995558586] [2023-12-19 14:08:58,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:08:58,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090249594] [2023-12-19 14:08:58,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090249594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:08:58,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:08:58,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:08:58,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011261545] [2023-12-19 14:08:58,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:08:58,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:08:58,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:08:58,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:08:58,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:08:58,853 INFO L87 Difference]: Start difference. First operand 20052 states and 33130 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:08:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:08:59,437 INFO L93 Difference]: Finished difference Result 45956 states and 75794 transitions. [2023-12-19 14:08:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:08:59,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 436 [2023-12-19 14:08:59,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:08:59,500 INFO L225 Difference]: With dead ends: 45956 [2023-12-19 14:08:59,501 INFO L226 Difference]: Without dead ends: 25905 [2023-12-19 14:08:59,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 14:08:59,541 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1159 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:08:59,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 1736 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 14:08:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25905 states. [2023-12-19 14:09:00,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25905 to 21106. [2023-12-19 14:09:00,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21106 states, 19389 states have (on average 1.6233947083397804) internal successors, (31476), 19415 states have internal predecessors, (31476), 1664 states have call successors, (1664), 52 states have call predecessors, (1664), 52 states have return successors, (1664), 1638 states have call predecessors, (1664), 1664 states have call successors, (1664) [2023-12-19 14:09:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21106 states to 21106 states and 34804 transitions. [2023-12-19 14:09:00,341 INFO L78 Accepts]: Start accepts. Automaton has 21106 states and 34804 transitions. Word has length 436 [2023-12-19 14:09:00,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:09:00,342 INFO L495 AbstractCegarLoop]: Abstraction has 21106 states and 34804 transitions. [2023-12-19 14:09:00,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:00,342 INFO L276 IsEmpty]: Start isEmpty. Operand 21106 states and 34804 transitions. [2023-12-19 14:09:00,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-19 14:09:00,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:09:00,349 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:00,361 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 14:09:00,561 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 14:09:00,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:09:00,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:09:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash -576680749, now seen corresponding path program 1 times [2023-12-19 14:09:00,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:09:00,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142417810] [2023-12-19 14:09:00,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:00,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:09:00,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:09:00,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017763457] [2023-12-19 14:09:00,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:00,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:09:00,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:09:00,607 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 14:09:00,629 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 14:09:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:09:00,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 14:09:00,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:09:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:09:01,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:09:01,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:09:01,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142417810] [2023-12-19 14:09:01,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:09:01,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017763457] [2023-12-19 14:09:01,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017763457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:09:01,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:09:01,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:09:01,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109712733] [2023-12-19 14:09:01,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:09:01,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:09:01,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:09:01,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:09:01,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:09:01,320 INFO L87 Difference]: Start difference. First operand 21106 states and 34804 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:02,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:09:02,218 INFO L93 Difference]: Finished difference Result 62262 states and 102736 transitions. [2023-12-19 14:09:02,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 14:09:02,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 436 [2023-12-19 14:09:02,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:09:02,296 INFO L225 Difference]: With dead ends: 62262 [2023-12-19 14:09:02,296 INFO L226 Difference]: Without dead ends: 41157 [2023-12-19 14:09:02,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 433 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 14:09:02,329 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 439 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 14:09:02,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1038 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 14:09:02,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41157 states. [2023-12-19 14:09:03,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41157 to 41107. [2023-12-19 14:09:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41107 states, 37806 states have (on average 1.623684071311432) internal successors, (61385), 37856 states have internal predecessors, (61385), 3200 states have call successors, (3200), 100 states have call predecessors, (3200), 100 states have return successors, (3200), 3150 states have call predecessors, (3200), 3200 states have call successors, (3200) [2023-12-19 14:09:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41107 states to 41107 states and 67785 transitions. [2023-12-19 14:09:03,910 INFO L78 Accepts]: Start accepts. Automaton has 41107 states and 67785 transitions. Word has length 436 [2023-12-19 14:09:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:09:03,911 INFO L495 AbstractCegarLoop]: Abstraction has 41107 states and 67785 transitions. [2023-12-19 14:09:03,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 41107 states and 67785 transitions. [2023-12-19 14:09:03,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-12-19 14:09:03,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:09:03,919 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:03,934 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 14:09:04,128 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 14:09:04,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:09:04,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:09:04,130 INFO L85 PathProgramCache]: Analyzing trace with hash 416575710, now seen corresponding path program 1 times [2023-12-19 14:09:04,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:09:04,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183698348] [2023-12-19 14:09:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:04,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:09:04,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:09:04,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216065297] [2023-12-19 14:09:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:04,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:09:04,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:09:04,280 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 14:09:04,300 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 14:09:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:09:04,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 14:09:04,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:09:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:09:05,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:09:05,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:09:05,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183698348] [2023-12-19 14:09:05,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:09:05,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216065297] [2023-12-19 14:09:05,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216065297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:09:05,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:09:05,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:09:05,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629152879] [2023-12-19 14:09:05,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:09:05,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:09:05,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:09:05,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:09:05,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:09:05,072 INFO L87 Difference]: Start difference. First operand 41107 states and 67785 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:07,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:09:07,091 INFO L93 Difference]: Finished difference Result 140060 states and 231762 transitions. [2023-12-19 14:09:07,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:09:07,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 437 [2023-12-19 14:09:07,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:09:07,406 INFO L225 Difference]: With dead ends: 140060 [2023-12-19 14:09:07,406 INFO L226 Difference]: Without dead ends: 112480 [2023-12-19 14:09:07,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 14:09:07,454 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 2752 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 14:09:07,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2752 Valid, 2710 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 14:09:07,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112480 states. [2023-12-19 14:09:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112480 to 77727. [2023-12-19 14:09:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77727 states, 72026 states have (on average 1.6302446338822092) internal successors, (117420), 72176 states have internal predecessors, (117420), 5500 states have call successors, (5500), 200 states have call predecessors, (5500), 200 states have return successors, (5500), 5350 states have call predecessors, (5500), 5500 states have call successors, (5500) [2023-12-19 14:09:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77727 states to 77727 states and 128420 transitions. [2023-12-19 14:09:10,469 INFO L78 Accepts]: Start accepts. Automaton has 77727 states and 128420 transitions. Word has length 437 [2023-12-19 14:09:10,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:09:10,470 INFO L495 AbstractCegarLoop]: Abstraction has 77727 states and 128420 transitions. [2023-12-19 14:09:10,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 77727 states and 128420 transitions. [2023-12-19 14:09:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-12-19 14:09:10,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:09:10,481 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:10,495 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 14:09:10,690 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 14:09:10,691 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:09:10,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:09:10,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1494466848, now seen corresponding path program 1 times [2023-12-19 14:09:10,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:09:10,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628478556] [2023-12-19 14:09:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:10,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:09:10,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:09:10,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293427192] [2023-12-19 14:09:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:10,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:09:10,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:09:10,738 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 14:09:10,756 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 14:09:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:09:11,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 14:09:11,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:09:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:09:11,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:09:11,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:09:11,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628478556] [2023-12-19 14:09:11,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:09:11,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293427192] [2023-12-19 14:09:11,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293427192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:09:11,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:09:11,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:09:11,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332844897] [2023-12-19 14:09:11,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:09:11,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:09:11,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:09:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:09:11,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:09:11,145 INFO L87 Difference]: Start difference. First operand 77727 states and 128420 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:09:14,282 INFO L93 Difference]: Finished difference Result 335623 states and 555414 transitions. [2023-12-19 14:09:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:09:14,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 437 [2023-12-19 14:09:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:09:14,977 INFO L225 Difference]: With dead ends: 335623 [2023-12-19 14:09:14,977 INFO L226 Difference]: Without dead ends: 257897 [2023-12-19 14:09:15,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 435 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 14:09:15,086 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1217 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 14:09:15,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 1754 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 14:09:15,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257897 states. [2023-12-19 14:09:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257897 to 96341. [2023-12-19 14:09:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96341 states, 90640 states have (on average 1.638382612533098) internal successors, (148503), 90790 states have internal predecessors, (148503), 5500 states have call successors, (5500), 200 states have call predecessors, (5500), 200 states have return successors, (5500), 5350 states have call predecessors, (5500), 5500 states have call successors, (5500) [2023-12-19 14:09:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96341 states to 96341 states and 159503 transitions. [2023-12-19 14:09:19,109 INFO L78 Accepts]: Start accepts. Automaton has 96341 states and 159503 transitions. Word has length 437 [2023-12-19 14:09:19,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:09:19,109 INFO L495 AbstractCegarLoop]: Abstraction has 96341 states and 159503 transitions. [2023-12-19 14:09:19,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand 96341 states and 159503 transitions. [2023-12-19 14:09:19,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-12-19 14:09:19,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:09:19,123 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:19,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 14:09:19,331 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 14:09:19,331 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:09:19,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:09:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1060737762, now seen corresponding path program 1 times [2023-12-19 14:09:19,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:09:19,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718978241] [2023-12-19 14:09:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:19,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:09:19,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:09:19,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437709068] [2023-12-19 14:09:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:19,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:09:19,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:09:19,376 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 14:09:19,410 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 14:09:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:09:19,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:09:19,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:09:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:09:19,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:09:19,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:09:19,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718978241] [2023-12-19 14:09:19,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:09:19,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437709068] [2023-12-19 14:09:19,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437709068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:09:19,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:09:19,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:09:19,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512010514] [2023-12-19 14:09:19,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:09:19,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:09:19,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:09:19,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:09:19,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:09:19,781 INFO L87 Difference]: Start difference. First operand 96341 states and 159503 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:22,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:09:22,150 INFO L93 Difference]: Finished difference Result 249619 states and 411351 transitions. [2023-12-19 14:09:22,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:09:22,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 437 [2023-12-19 14:09:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:09:22,374 INFO L225 Difference]: With dead ends: 249619 [2023-12-19 14:09:22,374 INFO L226 Difference]: Without dead ends: 152939 [2023-12-19 14:09:22,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 434 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 14:09:22,456 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 745 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:09:22,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1456 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:09:22,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152939 states. [2023-12-19 14:09:25,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152939 to 106359. [2023-12-19 14:09:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106359 states, 100658 states have (on average 1.616821315742415) internal successors, (162746), 100808 states have internal predecessors, (162746), 5500 states have call successors, (5500), 200 states have call predecessors, (5500), 200 states have return successors, (5500), 5350 states have call predecessors, (5500), 5500 states have call successors, (5500) [2023-12-19 14:09:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106359 states to 106359 states and 173746 transitions. [2023-12-19 14:09:25,722 INFO L78 Accepts]: Start accepts. Automaton has 106359 states and 173746 transitions. Word has length 437 [2023-12-19 14:09:25,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:09:25,722 INFO L495 AbstractCegarLoop]: Abstraction has 106359 states and 173746 transitions. [2023-12-19 14:09:25,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:25,722 INFO L276 IsEmpty]: Start isEmpty. Operand 106359 states and 173746 transitions. [2023-12-19 14:09:25,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-12-19 14:09:25,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:09:25,733 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:25,740 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 14:09:25,934 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 14:09:25,934 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:09:25,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:09:25,935 INFO L85 PathProgramCache]: Analyzing trace with hash 239637602, now seen corresponding path program 1 times [2023-12-19 14:09:25,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:09:25,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653466795] [2023-12-19 14:09:25,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:25,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:09:25,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:09:25,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053872292] [2023-12-19 14:09:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:25,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:09:25,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:09:25,982 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 14:09:26,008 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 14:09:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:09:26,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 14:09:26,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:09:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:09:26,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:09:26,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:09:26,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653466795] [2023-12-19 14:09:26,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:09:26,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053872292] [2023-12-19 14:09:26,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053872292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:09:26,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:09:26,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 14:09:26,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385274824] [2023-12-19 14:09:26,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:09:26,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 14:09:26,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:09:26,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 14:09:26,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 14:09:26,550 INFO L87 Difference]: Start difference. First operand 106359 states and 173746 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:28,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:09:28,673 INFO L93 Difference]: Finished difference Result 266171 states and 434995 transitions. [2023-12-19 14:09:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 14:09:28,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 437 [2023-12-19 14:09:28,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:09:28,875 INFO L225 Difference]: With dead ends: 266171 [2023-12-19 14:09:28,875 INFO L226 Difference]: Without dead ends: 159813 [2023-12-19 14:09:28,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 435 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 14:09:28,930 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 437 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 14:09:28,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 930 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 14:09:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159813 states. [2023-12-19 14:09:32,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159813 to 157123. [2023-12-19 14:09:32,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157123 states, 148072 states have (on average 1.6003430763412394) internal successors, (236966), 148322 states have internal predecessors, (236966), 8700 states have call successors, (8700), 350 states have call predecessors, (8700), 350 states have return successors, (8700), 8450 states have call predecessors, (8700), 8700 states have call successors, (8700) [2023-12-19 14:09:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157123 states to 157123 states and 254366 transitions. [2023-12-19 14:09:32,815 INFO L78 Accepts]: Start accepts. Automaton has 157123 states and 254366 transitions. Word has length 437 [2023-12-19 14:09:32,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:09:32,816 INFO L495 AbstractCegarLoop]: Abstraction has 157123 states and 254366 transitions. [2023-12-19 14:09:32,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:32,816 INFO L276 IsEmpty]: Start isEmpty. Operand 157123 states and 254366 transitions. [2023-12-19 14:09:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-12-19 14:09:32,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:09:32,828 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:32,834 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 14:09:33,028 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 14:09:33,029 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:09:33,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:09:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash -297243870, now seen corresponding path program 1 times [2023-12-19 14:09:33,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:09:33,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324427553] [2023-12-19 14:09:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:33,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:09:33,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:09:33,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768074734] [2023-12-19 14:09:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:33,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:09:33,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:09:33,083 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 14:09:33,105 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 14:09:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:09:33,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:09:33,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:09:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 2999 proven. 51 refuted. 0 times theorem prover too weak. 4030 trivial. 0 not checked. [2023-12-19 14:09:33,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:09:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 126 proven. 51 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 14:09:33,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:09:33,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324427553] [2023-12-19 14:09:33,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:09:33,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768074734] [2023-12-19 14:09:33,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768074734] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:09:33,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:09:33,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 14:09:33,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157552935] [2023-12-19 14:09:33,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:09:33,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:09:33,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:09:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:09:33,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:09:33,908 INFO L87 Difference]: Start difference. First operand 157123 states and 254366 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2023-12-19 14:09:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:09:35,571 INFO L93 Difference]: Finished difference Result 192103 states and 310438 transitions. [2023-12-19 14:09:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 14:09:35,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) Word has length 437 [2023-12-19 14:09:35,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:09:35,630 INFO L225 Difference]: With dead ends: 192103 [2023-12-19 14:09:35,631 INFO L226 Difference]: Without dead ends: 34981 [2023-12-19 14:09:35,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 866 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 14:09:35,709 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 620 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:09:35,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1015 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:09:35,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34981 states. [2023-12-19 14:09:36,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34981 to 26213. [2023-12-19 14:09:36,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26213 states, 25124 states have (on average 1.5897946186912912) internal successors, (39942), 25140 states have internal predecessors, (39942), 1024 states have call successors, (1024), 64 states have call predecessors, (1024), 64 states have return successors, (1024), 1008 states have call predecessors, (1024), 1024 states have call successors, (1024) [2023-12-19 14:09:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26213 states to 26213 states and 41990 transitions. [2023-12-19 14:09:36,440 INFO L78 Accepts]: Start accepts. Automaton has 26213 states and 41990 transitions. Word has length 437 [2023-12-19 14:09:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:09:36,441 INFO L495 AbstractCegarLoop]: Abstraction has 26213 states and 41990 transitions. [2023-12-19 14:09:36,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2023-12-19 14:09:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 26213 states and 41990 transitions. [2023-12-19 14:09:36,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2023-12-19 14:09:36,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:09:36,561 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:36,567 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 14:09:36,761 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 14:09:36,762 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:09:36,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:09:36,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2088972798, now seen corresponding path program 1 times [2023-12-19 14:09:36,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:09:36,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248153839] [2023-12-19 14:09:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:36,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:09:36,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:09:36,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372174333] [2023-12-19 14:09:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:36,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:09:36,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:09:36,803 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:09:36,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 14:09:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:09:37,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 14:09:37,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:09:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:09:37,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:09:37,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:09:37,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248153839] [2023-12-19 14:09:37,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:09:37,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372174333] [2023-12-19 14:09:37,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372174333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:09:37,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:09:37,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 14:09:37,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864613506] [2023-12-19 14:09:37,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:09:37,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 14:09:37,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:09:37,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 14:09:37,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 14:09:37,245 INFO L87 Difference]: Start difference. First operand 26213 states and 41990 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:09:38,384 INFO L93 Difference]: Finished difference Result 67388 states and 107975 transitions. [2023-12-19 14:09:38,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 14:09:38,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 438 [2023-12-19 14:09:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:09:38,433 INFO L225 Difference]: With dead ends: 67388 [2023-12-19 14:09:38,433 INFO L226 Difference]: Without dead ends: 41176 [2023-12-19 14:09:38,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:09:38,464 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1971 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 2036 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:09:38,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 2036 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 14:09:38,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41176 states. [2023-12-19 14:09:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41176 to 25998. [2023-12-19 14:09:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25998 states, 24909 states have (on average 1.583243004536513) internal successors, (39437), 24925 states have internal predecessors, (39437), 1024 states have call successors, (1024), 64 states have call predecessors, (1024), 64 states have return successors, (1024), 1008 states have call predecessors, (1024), 1024 states have call successors, (1024) [2023-12-19 14:09:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25998 states to 25998 states and 41485 transitions. [2023-12-19 14:09:39,161 INFO L78 Accepts]: Start accepts. Automaton has 25998 states and 41485 transitions. Word has length 438 [2023-12-19 14:09:39,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:09:39,161 INFO L495 AbstractCegarLoop]: Abstraction has 25998 states and 41485 transitions. [2023-12-19 14:09:39,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 25998 states and 41485 transitions. [2023-12-19 14:09:39,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2023-12-19 14:09:39,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:09:39,167 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:39,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 14:09:39,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 14:09:39,376 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:09:39,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:09:39,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1772265412, now seen corresponding path program 1 times [2023-12-19 14:09:39,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:09:39,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735508734] [2023-12-19 14:09:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:39,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:09:39,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:09:39,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92946101] [2023-12-19 14:09:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:39,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:09:39,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:09:39,424 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:09:39,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 14:09:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:09:39,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 14:09:39,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:09:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:09:39,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:09:39,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:09:39,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735508734] [2023-12-19 14:09:39,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:09:39,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92946101] [2023-12-19 14:09:39,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92946101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:09:39,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:09:39,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:09:39,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491878954] [2023-12-19 14:09:39,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:09:39,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:09:39,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:09:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:09:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:09:39,843 INFO L87 Difference]: Start difference. First operand 25998 states and 41485 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:41,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:09:41,073 INFO L93 Difference]: Finished difference Result 67084 states and 106783 transitions. [2023-12-19 14:09:41,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 14:09:41,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 438 [2023-12-19 14:09:41,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:09:41,130 INFO L225 Difference]: With dead ends: 67084 [2023-12-19 14:09:41,131 INFO L226 Difference]: Without dead ends: 40688 [2023-12-19 14:09:41,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 436 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 14:09:41,151 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 899 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:09:41,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1754 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:09:41,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40688 states. [2023-12-19 14:09:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40688 to 22125. [2023-12-19 14:09:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22125 states, 21036 states have (on average 1.5692622171515498) internal successors, (33011), 21052 states have internal predecessors, (33011), 1024 states have call successors, (1024), 64 states have call predecessors, (1024), 64 states have return successors, (1024), 1008 states have call predecessors, (1024), 1024 states have call successors, (1024) [2023-12-19 14:09:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22125 states to 22125 states and 35059 transitions. [2023-12-19 14:09:41,817 INFO L78 Accepts]: Start accepts. Automaton has 22125 states and 35059 transitions. Word has length 438 [2023-12-19 14:09:41,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:09:41,817 INFO L495 AbstractCegarLoop]: Abstraction has 22125 states and 35059 transitions. [2023-12-19 14:09:41,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:41,817 INFO L276 IsEmpty]: Start isEmpty. Operand 22125 states and 35059 transitions. [2023-12-19 14:09:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2023-12-19 14:09:41,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:09:41,824 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:41,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 14:09:42,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 14:09:42,025 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:09:42,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:09:42,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1713368324, now seen corresponding path program 1 times [2023-12-19 14:09:42,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:09:42,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445836093] [2023-12-19 14:09:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:42,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:09:42,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:09:42,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597879271] [2023-12-19 14:09:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:42,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:09:42,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:09:42,074 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:09:42,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 14:09:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:09:42,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 14:09:42,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:09:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 2949 proven. 126 refuted. 0 times theorem prover too weak. 4005 trivial. 0 not checked. [2023-12-19 14:09:43,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:09:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 51 proven. 126 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 14:09:44,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:09:44,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445836093] [2023-12-19 14:09:44,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:09:44,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597879271] [2023-12-19 14:09:44,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597879271] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:09:44,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:09:44,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-19 14:09:44,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415769293] [2023-12-19 14:09:44,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:09:44,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 14:09:44,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:09:44,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 14:09:44,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-19 14:09:44,341 INFO L87 Difference]: Start difference. First operand 22125 states and 35059 transitions. Second operand has 14 states, 14 states have (on average 17.714285714285715) internal successors, (248), 14 states have internal predecessors, (248), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) [2023-12-19 14:09:46,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:09:46,849 INFO L93 Difference]: Finished difference Result 89597 states and 141587 transitions. [2023-12-19 14:09:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 14:09:46,850 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.714285714285715) internal successors, (248), 14 states have internal predecessors, (248), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) Word has length 438 [2023-12-19 14:09:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:09:46,941 INFO L225 Difference]: With dead ends: 89597 [2023-12-19 14:09:46,941 INFO L226 Difference]: Without dead ends: 67473 [2023-12-19 14:09:46,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 864 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2023-12-19 14:09:46,975 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 2393 mSDsluCounter, 3129 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2469 SdHoareTripleChecker+Valid, 3790 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:09:46,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2469 Valid, 3790 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 14:09:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67473 states. [2023-12-19 14:09:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67473 to 44107. [2023-12-19 14:09:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44107 states, 41914 states have (on average 1.563630290595028) internal successors, (65538), 41946 states have internal predecessors, (65538), 2048 states have call successors, (2048), 144 states have call predecessors, (2048), 144 states have return successors, (2048), 2016 states have call predecessors, (2048), 2048 states have call successors, (2048) [2023-12-19 14:09:48,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44107 states to 44107 states and 69634 transitions. [2023-12-19 14:09:48,348 INFO L78 Accepts]: Start accepts. Automaton has 44107 states and 69634 transitions. Word has length 438 [2023-12-19 14:09:48,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:09:48,348 INFO L495 AbstractCegarLoop]: Abstraction has 44107 states and 69634 transitions. [2023-12-19 14:09:48,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.714285714285715) internal successors, (248), 14 states have internal predecessors, (248), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) [2023-12-19 14:09:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 44107 states and 69634 transitions. [2023-12-19 14:09:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 14:09:48,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:09:48,358 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:48,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 14:09:48,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 14:09:48,558 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:09:48,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:09:48,559 INFO L85 PathProgramCache]: Analyzing trace with hash 54875947, now seen corresponding path program 1 times [2023-12-19 14:09:48,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:09:48,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276704496] [2023-12-19 14:09:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:48,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:09:48,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:09:48,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716851059] [2023-12-19 14:09:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:48,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:09:48,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:09:48,599 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:09:48,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 14:09:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:09:49,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 14:09:49,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:09:49,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 2949 proven. 126 refuted. 0 times theorem prover too weak. 4005 trivial. 0 not checked. [2023-12-19 14:09:49,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:09:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 51 proven. 126 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 14:09:50,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:09:50,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276704496] [2023-12-19 14:09:50,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:09:50,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716851059] [2023-12-19 14:09:50,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716851059] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:09:50,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:09:50,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-19 14:09:50,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698242389] [2023-12-19 14:09:50,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:09:50,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 14:09:50,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:09:50,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 14:09:50,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-19 14:09:50,345 INFO L87 Difference]: Start difference. First operand 44107 states and 69634 transitions. Second operand has 16 states, 16 states have (on average 15.5625) internal successors, (249), 16 states have internal predecessors, (249), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) [2023-12-19 14:09:53,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:09:53,585 INFO L93 Difference]: Finished difference Result 117473 states and 185452 transitions. [2023-12-19 14:09:53,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 14:09:53,586 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.5625) internal successors, (249), 16 states have internal predecessors, (249), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) Word has length 439 [2023-12-19 14:09:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:09:53,831 INFO L225 Difference]: With dead ends: 117473 [2023-12-19 14:09:53,831 INFO L226 Difference]: Without dead ends: 95349 [2023-12-19 14:09:53,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 866 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=352, Invalid=980, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 14:09:53,855 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 2213 mSDsluCounter, 4201 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2230 SdHoareTripleChecker+Valid, 5026 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:09:53,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2230 Valid, 5026 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 14:09:53,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95349 states. [2023-12-19 14:09:56,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95349 to 90342. [2023-12-19 14:09:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90342 states, 86641 states have (on average 1.5737930079292715) internal successors, (136355), 86766 states have internal predecessors, (136355), 3431 states have call successors, (3431), 269 states have call predecessors, (3431), 269 states have return successors, (3431), 3306 states have call predecessors, (3431), 3431 states have call successors, (3431) [2023-12-19 14:09:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90342 states to 90342 states and 143217 transitions. [2023-12-19 14:09:56,208 INFO L78 Accepts]: Start accepts. Automaton has 90342 states and 143217 transitions. Word has length 439 [2023-12-19 14:09:56,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:09:56,208 INFO L495 AbstractCegarLoop]: Abstraction has 90342 states and 143217 transitions. [2023-12-19 14:09:56,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.5625) internal successors, (249), 16 states have internal predecessors, (249), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) [2023-12-19 14:09:56,208 INFO L276 IsEmpty]: Start isEmpty. Operand 90342 states and 143217 transitions. [2023-12-19 14:09:56,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 14:09:56,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:09:56,221 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:56,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 14:09:56,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:09:56,421 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:09:56,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:09:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash 83440384, now seen corresponding path program 1 times [2023-12-19 14:09:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:09:56,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258388630] [2023-12-19 14:09:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:56,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:09:56,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:09:56,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489853526] [2023-12-19 14:09:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:09:56,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:09:56,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:09:56,476 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:09:56,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 14:09:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:09:56,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 14:09:56,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:09:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 14:09:56,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:09:56,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:09:56,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258388630] [2023-12-19 14:09:56,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:09:56,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489853526] [2023-12-19 14:09:56,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489853526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:09:56,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:09:56,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 14:09:56,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273696109] [2023-12-19 14:09:56,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:09:56,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 14:09:56,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:09:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 14:09:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 14:09:56,973 INFO L87 Difference]: Start difference. First operand 90342 states and 143217 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 1 states have call successors, (60), 1 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:09:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:09:59,509 INFO L93 Difference]: Finished difference Result 160108 states and 253400 transitions. [2023-12-19 14:09:59,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 14:09:59,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 1 states have call successors, (60), 1 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 1 states have call successors, (60) Word has length 439 [2023-12-19 14:09:59,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:09:59,619 INFO L225 Difference]: With dead ends: 160108 [2023-12-19 14:09:59,619 INFO L226 Difference]: Without dead ends: 73520 [2023-12-19 14:09:59,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 14:09:59,674 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 632 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:09:59,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 987 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:09:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73520 states. [2023-12-19 14:10:01,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73520 to 73046. [2023-12-19 14:10:01,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73046 states, 69313 states have (on average 1.565911156637283) internal successors, (108538), 69438 states have internal predecessors, (108538), 3431 states have call successors, (3431), 301 states have call predecessors, (3431), 301 states have return successors, (3431), 3306 states have call predecessors, (3431), 3431 states have call successors, (3431) [2023-12-19 14:10:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73046 states to 73046 states and 115400 transitions. [2023-12-19 14:10:01,780 INFO L78 Accepts]: Start accepts. Automaton has 73046 states and 115400 transitions. Word has length 439 [2023-12-19 14:10:01,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:01,780 INFO L495 AbstractCegarLoop]: Abstraction has 73046 states and 115400 transitions. [2023-12-19 14:10:01,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 1 states have call successors, (60), 1 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:10:01,780 INFO L276 IsEmpty]: Start isEmpty. Operand 73046 states and 115400 transitions. [2023-12-19 14:10:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 14:10:01,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:01,789 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:01,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:01,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:01,990 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:01,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:01,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1669640774, now seen corresponding path program 1 times [2023-12-19 14:10:01,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:01,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886380628] [2023-12-19 14:10:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:01,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:02,075 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:02,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591319009] [2023-12-19 14:10:02,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:02,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:02,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:02,092 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:10:02,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 14:10:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:02,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 14:10:02,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:10:02,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:10:02,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:02,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886380628] [2023-12-19 14:10:02,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:02,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591319009] [2023-12-19 14:10:02,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591319009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:10:02,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:10:02,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 14:10:02,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276709802] [2023-12-19 14:10:02,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:10:02,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 14:10:02,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:02,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 14:10:02,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 14:10:02,613 INFO L87 Difference]: Start difference. First operand 73046 states and 115400 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:10:05,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:05,199 INFO L93 Difference]: Finished difference Result 188269 states and 297703 transitions. [2023-12-19 14:10:05,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 14:10:05,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 439 [2023-12-19 14:10:05,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:05,373 INFO L225 Difference]: With dead ends: 188269 [2023-12-19 14:10:05,374 INFO L226 Difference]: Without dead ends: 114774 [2023-12-19 14:10:05,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 437 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 14:10:05,425 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 643 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:05,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 974 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 14:10:05,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114774 states. [2023-12-19 14:10:07,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114774 to 79122. [2023-12-19 14:10:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79122 states, 75310 states have (on average 1.5508033461691675) internal successors, (116791), 75435 states have internal predecessors, (116791), 3431 states have call successors, (3431), 380 states have call predecessors, (3431), 380 states have return successors, (3431), 3306 states have call predecessors, (3431), 3431 states have call successors, (3431) [2023-12-19 14:10:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79122 states to 79122 states and 123653 transitions. [2023-12-19 14:10:08,236 INFO L78 Accepts]: Start accepts. Automaton has 79122 states and 123653 transitions. Word has length 439 [2023-12-19 14:10:08,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:08,248 INFO L495 AbstractCegarLoop]: Abstraction has 79122 states and 123653 transitions. [2023-12-19 14:10:08,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:10:08,248 INFO L276 IsEmpty]: Start isEmpty. Operand 79122 states and 123653 transitions. [2023-12-19 14:10:08,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 14:10:08,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:08,259 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:08,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:08,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:08,469 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:08,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:08,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1316552392, now seen corresponding path program 1 times [2023-12-19 14:10:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:08,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136214740] [2023-12-19 14:10:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:08,512 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:08,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494046795] [2023-12-19 14:10:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:08,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:08,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:08,513 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:10:08,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 14:10:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:08,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:10:08,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 2729 proven. 132 refuted. 0 times theorem prover too weak. 4219 trivial. 0 not checked. [2023-12-19 14:10:09,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:10:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 45 proven. 132 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 14:10:09,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:09,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136214740] [2023-12-19 14:10:09,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:09,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494046795] [2023-12-19 14:10:09,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494046795] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:10:09,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:10:09,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 14:10:09,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458892409] [2023-12-19 14:10:09,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:10:09,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:10:09,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:09,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:10:09,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:10:09,589 INFO L87 Difference]: Start difference. First operand 79122 states and 123653 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-19 14:10:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:12,197 INFO L93 Difference]: Finished difference Result 139340 states and 217901 transitions. [2023-12-19 14:10:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:10:12,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) Word has length 439 [2023-12-19 14:10:12,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:12,299 INFO L225 Difference]: With dead ends: 139340 [2023-12-19 14:10:12,300 INFO L226 Difference]: Without dead ends: 55681 [2023-12-19 14:10:12,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 870 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 14:10:12,354 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 249 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:12,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1035 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 14:10:12,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55681 states. [2023-12-19 14:10:14,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55681 to 54701. [2023-12-19 14:10:14,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54701 states, 51202 states have (on average 1.5398226631772196) internal successors, (78842), 51314 states have internal predecessors, (78842), 3084 states have call successors, (3084), 414 states have call predecessors, (3084), 414 states have return successors, (3084), 2972 states have call predecessors, (3084), 3084 states have call successors, (3084) [2023-12-19 14:10:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54701 states to 54701 states and 85010 transitions. [2023-12-19 14:10:14,367 INFO L78 Accepts]: Start accepts. Automaton has 54701 states and 85010 transitions. Word has length 439 [2023-12-19 14:10:14,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:14,368 INFO L495 AbstractCegarLoop]: Abstraction has 54701 states and 85010 transitions. [2023-12-19 14:10:14,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2023-12-19 14:10:14,368 INFO L276 IsEmpty]: Start isEmpty. Operand 54701 states and 85010 transitions. [2023-12-19 14:10:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 14:10:14,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:14,377 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:14,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:14,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:14,586 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:14,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:14,586 INFO L85 PathProgramCache]: Analyzing trace with hash -799516794, now seen corresponding path program 1 times [2023-12-19 14:10:14,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:14,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443198426] [2023-12-19 14:10:14,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:14,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:14,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:14,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346492306] [2023-12-19 14:10:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:14,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:14,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:14,625 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:10:14,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 14:10:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:15,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 14:10:15,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 1760 proven. 300 refuted. 0 times theorem prover too weak. 5020 trivial. 0 not checked. [2023-12-19 14:10:15,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:10:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 48 proven. 303 refuted. 0 times theorem prover too weak. 6729 trivial. 0 not checked. [2023-12-19 14:10:16,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:16,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443198426] [2023-12-19 14:10:16,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:16,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346492306] [2023-12-19 14:10:16,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346492306] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:10:16,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:10:16,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-19 14:10:16,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894261339] [2023-12-19 14:10:16,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:10:16,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 14:10:16,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:16,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 14:10:16,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-19 14:10:16,455 INFO L87 Difference]: Start difference. First operand 54701 states and 85010 transitions. Second operand has 15 states, 15 states have (on average 15.933333333333334) internal successors, (239), 15 states have internal predecessors, (239), 4 states have call successors, (111), 3 states have call predecessors, (111), 6 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) [2023-12-19 14:10:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:18,798 INFO L93 Difference]: Finished difference Result 89105 states and 137198 transitions. [2023-12-19 14:10:18,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 14:10:18,798 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 15.933333333333334) internal successors, (239), 15 states have internal predecessors, (239), 4 states have call successors, (111), 3 states have call predecessors, (111), 6 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) Word has length 439 [2023-12-19 14:10:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:18,848 INFO L225 Difference]: With dead ends: 89105 [2023-12-19 14:10:18,849 INFO L226 Difference]: Without dead ends: 34629 [2023-12-19 14:10:18,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 864 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=470, Unknown=0, NotChecked=0, Total=702 [2023-12-19 14:10:18,882 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1120 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:18,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1238 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 14:10:18,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34629 states. [2023-12-19 14:10:20,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34629 to 34001. [2023-12-19 14:10:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34001 states, 30639 states have (on average 1.485068050523842) internal successors, (45501), 30681 states have internal predecessors, (45501), 2804 states have call successors, (2804), 557 states have call predecessors, (2804), 557 states have return successors, (2804), 2762 states have call predecessors, (2804), 2804 states have call successors, (2804) [2023-12-19 14:10:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34001 states to 34001 states and 51109 transitions. [2023-12-19 14:10:20,749 INFO L78 Accepts]: Start accepts. Automaton has 34001 states and 51109 transitions. Word has length 439 [2023-12-19 14:10:20,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:20,749 INFO L495 AbstractCegarLoop]: Abstraction has 34001 states and 51109 transitions. [2023-12-19 14:10:20,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.933333333333334) internal successors, (239), 15 states have internal predecessors, (239), 4 states have call successors, (111), 3 states have call predecessors, (111), 6 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) [2023-12-19 14:10:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 34001 states and 51109 transitions. [2023-12-19 14:10:20,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 14:10:20,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:20,755 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:20,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:20,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:20,966 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:20,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:20,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1020671656, now seen corresponding path program 1 times [2023-12-19 14:10:20,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:20,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127734999] [2023-12-19 14:10:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:20,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:21,010 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:21,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365284569] [2023-12-19 14:10:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:21,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:21,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:21,012 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:10:21,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 14:10:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:21,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 14:10:21,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 1877 proven. 150 refuted. 0 times theorem prover too weak. 5053 trivial. 0 not checked. [2023-12-19 14:10:22,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:10:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 27 proven. 150 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 14:10:22,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:22,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127734999] [2023-12-19 14:10:22,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:22,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365284569] [2023-12-19 14:10:22,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365284569] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:10:22,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:10:22,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-12-19 14:10:22,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353682546] [2023-12-19 14:10:22,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:10:22,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 14:10:22,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:22,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 14:10:22,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-19 14:10:22,773 INFO L87 Difference]: Start difference. First operand 34001 states and 51109 transitions. Second operand has 13 states, 13 states have (on average 20.23076923076923) internal successors, (263), 13 states have internal predecessors, (263), 3 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (111), 3 states have call predecessors, (111), 3 states have call successors, (111) [2023-12-19 14:10:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:25,104 INFO L93 Difference]: Finished difference Result 68971 states and 103386 transitions. [2023-12-19 14:10:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 14:10:25,105 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 20.23076923076923) internal successors, (263), 13 states have internal predecessors, (263), 3 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (111), 3 states have call predecessors, (111), 3 states have call successors, (111) Word has length 439 [2023-12-19 14:10:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:25,150 INFO L225 Difference]: With dead ends: 68971 [2023-12-19 14:10:25,150 INFO L226 Difference]: Without dead ends: 35207 [2023-12-19 14:10:25,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 866 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2023-12-19 14:10:25,172 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1042 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:25,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 1456 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 14:10:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35207 states. [2023-12-19 14:10:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35207 to 34145. [2023-12-19 14:10:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34145 states, 30783 states have (on average 1.4827989474710068) internal successors, (45645), 30825 states have internal predecessors, (45645), 2804 states have call successors, (2804), 557 states have call predecessors, (2804), 557 states have return successors, (2804), 2762 states have call predecessors, (2804), 2804 states have call successors, (2804) [2023-12-19 14:10:26,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34145 states to 34145 states and 51253 transitions. [2023-12-19 14:10:26,844 INFO L78 Accepts]: Start accepts. Automaton has 34145 states and 51253 transitions. Word has length 439 [2023-12-19 14:10:26,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:26,844 INFO L495 AbstractCegarLoop]: Abstraction has 34145 states and 51253 transitions. [2023-12-19 14:10:26,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.23076923076923) internal successors, (263), 13 states have internal predecessors, (263), 3 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (111), 3 states have call predecessors, (111), 3 states have call successors, (111) [2023-12-19 14:10:26,844 INFO L276 IsEmpty]: Start isEmpty. Operand 34145 states and 51253 transitions. [2023-12-19 14:10:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 14:10:26,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:26,849 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:26,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-19 14:10:27,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:27,050 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:27,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:27,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1245709530, now seen corresponding path program 1 times [2023-12-19 14:10:27,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:27,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428719281] [2023-12-19 14:10:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:27,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:27,087 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:27,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885822469] [2023-12-19 14:10:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:27,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:27,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:27,089 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:10:27,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 14:10:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:27,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 14:10:27,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3417 proven. 108 refuted. 0 times theorem prover too weak. 3555 trivial. 0 not checked. [2023-12-19 14:10:28,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:10:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 69 proven. 108 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 14:10:28,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:28,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428719281] [2023-12-19 14:10:28,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:28,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885822469] [2023-12-19 14:10:28,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885822469] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:10:28,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:10:28,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2023-12-19 14:10:28,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434771015] [2023-12-19 14:10:28,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:10:28,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 14:10:28,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:28,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 14:10:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-19 14:10:28,566 INFO L87 Difference]: Start difference. First operand 34145 states and 51253 transitions. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) [2023-12-19 14:10:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:31,452 INFO L93 Difference]: Finished difference Result 72797 states and 108760 transitions. [2023-12-19 14:10:31,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 14:10:31,453 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) Word has length 439 [2023-12-19 14:10:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:31,504 INFO L225 Difference]: With dead ends: 72797 [2023-12-19 14:10:31,504 INFO L226 Difference]: Without dead ends: 38889 [2023-12-19 14:10:31,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2023-12-19 14:10:31,527 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 1287 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:31,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 2349 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 14:10:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38889 states. [2023-12-19 14:10:33,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38889 to 38307. [2023-12-19 14:10:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38307 states, 34388 states have (on average 1.4731883215075026) internal successors, (50660), 34454 states have internal predecessors, (50660), 3176 states have call successors, (3176), 742 states have call predecessors, (3176), 742 states have return successors, (3176), 3110 states have call predecessors, (3176), 3176 states have call successors, (3176) [2023-12-19 14:10:33,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38307 states to 38307 states and 57012 transitions. [2023-12-19 14:10:33,730 INFO L78 Accepts]: Start accepts. Automaton has 38307 states and 57012 transitions. Word has length 439 [2023-12-19 14:10:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:33,730 INFO L495 AbstractCegarLoop]: Abstraction has 38307 states and 57012 transitions. [2023-12-19 14:10:33,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) [2023-12-19 14:10:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 38307 states and 57012 transitions. [2023-12-19 14:10:33,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 14:10:33,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:33,734 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:33,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:33,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 14:10:33,935 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:33,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:33,936 INFO L85 PathProgramCache]: Analyzing trace with hash -712865256, now seen corresponding path program 1 times [2023-12-19 14:10:33,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:33,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528336343] [2023-12-19 14:10:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:33,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:33,972 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:33,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183437384] [2023-12-19 14:10:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:33,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:33,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:33,974 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:10:34,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 14:10:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:34,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 14:10:34,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2023-12-19 14:10:34,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 14:10:34,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:34,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528336343] [2023-12-19 14:10:34,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:34,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183437384] [2023-12-19 14:10:34,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183437384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 14:10:34,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 14:10:34,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 14:10:34,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135446143] [2023-12-19 14:10:34,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 14:10:34,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 14:10:34,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 14:10:34,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 14:10:34,879 INFO L87 Difference]: Start difference. First operand 38307 states and 57012 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 6 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:10:39,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:39,481 INFO L93 Difference]: Finished difference Result 109365 states and 162576 transitions. [2023-12-19 14:10:39,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 14:10:39,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 6 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 439 [2023-12-19 14:10:39,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:39,585 INFO L225 Difference]: With dead ends: 109365 [2023-12-19 14:10:39,585 INFO L226 Difference]: Without dead ends: 72279 [2023-12-19 14:10:39,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-19 14:10:39,617 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 1536 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:39,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1148 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 14:10:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72279 states. [2023-12-19 14:10:42,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72279 to 37891. [2023-12-19 14:10:42,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37891 states, 33878 states have (on average 1.4647263710962868) internal successors, (49622), 33944 states have internal predecessors, (49622), 3176 states have call successors, (3176), 836 states have call predecessors, (3176), 836 states have return successors, (3176), 3110 states have call predecessors, (3176), 3176 states have call successors, (3176) [2023-12-19 14:10:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37891 states to 37891 states and 55974 transitions. [2023-12-19 14:10:42,377 INFO L78 Accepts]: Start accepts. Automaton has 37891 states and 55974 transitions. Word has length 439 [2023-12-19 14:10:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:42,378 INFO L495 AbstractCegarLoop]: Abstraction has 37891 states and 55974 transitions. [2023-12-19 14:10:42,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 6 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2023-12-19 14:10:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 37891 states and 55974 transitions. [2023-12-19 14:10:42,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-12-19 14:10:42,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:42,384 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:42,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:42,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 14:10:42,593 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:42,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:42,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1618791064, now seen corresponding path program 1 times [2023-12-19 14:10:42,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:42,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589819928] [2023-12-19 14:10:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:42,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:42,634 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:42,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489869065] [2023-12-19 14:10:42,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:42,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:42,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:42,636 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:10:42,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-19 14:10:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:43,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 14:10:43,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 2949 proven. 126 refuted. 0 times theorem prover too weak. 4005 trivial. 0 not checked. [2023-12-19 14:10:43,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:10:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 51 proven. 126 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 14:10:43,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:43,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589819928] [2023-12-19 14:10:43,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:43,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489869065] [2023-12-19 14:10:43,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489869065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:10:43,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:10:43,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 14:10:43,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515537846] [2023-12-19 14:10:43,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:10:43,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 14:10:43,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:43,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 14:10:43,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-19 14:10:43,693 INFO L87 Difference]: Start difference. First operand 37891 states and 55974 transitions. Second operand has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 3 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2023-12-19 14:10:46,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:10:46,516 INFO L93 Difference]: Finished difference Result 74679 states and 109959 transitions. [2023-12-19 14:10:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 14:10:46,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 3 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) Word has length 440 [2023-12-19 14:10:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:10:46,569 INFO L225 Difference]: With dead ends: 74679 [2023-12-19 14:10:46,569 INFO L226 Difference]: Without dead ends: 38537 [2023-12-19 14:10:46,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-19 14:10:46,592 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 627 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 14:10:46,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1510 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 14:10:46,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38537 states. [2023-12-19 14:10:48,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38537 to 37971. [2023-12-19 14:10:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37971 states, 33938 states have (on average 1.4561258765985032) internal successors, (49418), 34004 states have internal predecessors, (49418), 3176 states have call successors, (3176), 856 states have call predecessors, (3176), 856 states have return successors, (3176), 3110 states have call predecessors, (3176), 3176 states have call successors, (3176) [2023-12-19 14:10:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37971 states to 37971 states and 55770 transitions. [2023-12-19 14:10:48,924 INFO L78 Accepts]: Start accepts. Automaton has 37971 states and 55770 transitions. Word has length 440 [2023-12-19 14:10:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:10:48,924 INFO L495 AbstractCegarLoop]: Abstraction has 37971 states and 55770 transitions. [2023-12-19 14:10:48,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 3 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2023-12-19 14:10:48,924 INFO L276 IsEmpty]: Start isEmpty. Operand 37971 states and 55770 transitions. [2023-12-19 14:10:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-19 14:10:48,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:10:48,928 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:48,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-19 14:10:49,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 14:10:49,129 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:10:49,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:10:49,130 INFO L85 PathProgramCache]: Analyzing trace with hash 6104881, now seen corresponding path program 1 times [2023-12-19 14:10:49,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:10:49,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419925138] [2023-12-19 14:10:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:49,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:10:49,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:10:49,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978987901] [2023-12-19 14:10:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:10:49,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:10:49,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:10:49,169 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:10:49,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-19 14:10:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:10:49,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 14:10:49,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:10:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 2339 proven. 141 refuted. 0 times theorem prover too weak. 4600 trivial. 0 not checked. [2023-12-19 14:10:50,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:10:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 36 proven. 141 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 14:10:50,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:10:50,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419925138] [2023-12-19 14:10:50,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:10:50,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978987901] [2023-12-19 14:10:50,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978987901] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:10:50,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:10:50,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 14:10:50,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436716793] [2023-12-19 14:10:50,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:10:50,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 14:10:50,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:10:50,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 14:10:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-12-19 14:10:50,947 INFO L87 Difference]: Start difference. First operand 37971 states and 55770 transitions. Second operand has 18 states, 18 states have (on average 14.055555555555555) internal successors, (253), 18 states have internal predecessors, (253), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) [2023-12-19 14:11:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:11:04,457 INFO L93 Difference]: Finished difference Result 309710 states and 466640 transitions. [2023-12-19 14:11:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-19 14:11:04,458 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.055555555555555) internal successors, (253), 18 states have internal predecessors, (253), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) Word has length 441 [2023-12-19 14:11:04,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:11:05,014 INFO L225 Difference]: With dead ends: 309710 [2023-12-19 14:11:05,015 INFO L226 Difference]: Without dead ends: 272576 [2023-12-19 14:11:05,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=952, Invalid=3080, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 14:11:05,066 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 7444 mSDsluCounter, 4753 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7513 SdHoareTripleChecker+Valid, 5089 SdHoareTripleChecker+Invalid, 3079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 14:11:05,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7513 Valid, 5089 Invalid, 3079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 14:11:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272576 states. [2023-12-19 14:11:11,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272576 to 87057. [2023-12-19 14:11:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87057 states, 78968 states have (on average 1.4366325600243137) internal successors, (113448), 79100 states have internal predecessors, (113448), 6292 states have call successors, (6292), 1796 states have call predecessors, (6292), 1796 states have return successors, (6292), 6160 states have call predecessors, (6292), 6292 states have call successors, (6292) [2023-12-19 14:11:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87057 states to 87057 states and 126032 transitions. [2023-12-19 14:11:12,102 INFO L78 Accepts]: Start accepts. Automaton has 87057 states and 126032 transitions. Word has length 441 [2023-12-19 14:11:12,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:11:12,102 INFO L495 AbstractCegarLoop]: Abstraction has 87057 states and 126032 transitions. [2023-12-19 14:11:12,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.055555555555555) internal successors, (253), 18 states have internal predecessors, (253), 4 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (120), 4 states have call predecessors, (120), 4 states have call successors, (120) [2023-12-19 14:11:12,103 INFO L276 IsEmpty]: Start isEmpty. Operand 87057 states and 126032 transitions. [2023-12-19 14:11:12,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-19 14:11:12,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:11:12,110 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:12,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-19 14:11:12,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 14:11:12,318 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:11:12,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:11:12,319 INFO L85 PathProgramCache]: Analyzing trace with hash 899591219, now seen corresponding path program 1 times [2023-12-19 14:11:12,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:11:12,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054730943] [2023-12-19 14:11:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:12,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:11:12,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:11:12,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582395599] [2023-12-19 14:11:12,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:12,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:12,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:11:12,359 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:11:12,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-19 14:11:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:11:13,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 14:11:13,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:11:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3956 proven. 429 refuted. 0 times theorem prover too weak. 2695 trivial. 0 not checked. [2023-12-19 14:11:14,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:11:15,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:11:15,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054730943] [2023-12-19 14:11:15,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:11:15,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582395599] [2023-12-19 14:11:15,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582395599] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 14:11:15,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 14:11:15,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-19 14:11:15,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287874911] [2023-12-19 14:11:15,211 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 14:11:15,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 14:11:15,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:11:15,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 14:11:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2023-12-19 14:11:15,213 INFO L87 Difference]: Start difference. First operand 87057 states and 126032 transitions. Second operand has 14 states, 14 states have (on average 12.0) internal successors, (168), 14 states have internal predecessors, (168), 5 states have call successors, (60), 5 states have call predecessors, (60), 9 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) [2023-12-19 14:11:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:11:19,031 INFO L93 Difference]: Finished difference Result 114251 states and 164512 transitions. [2023-12-19 14:11:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 14:11:19,032 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.0) internal successors, (168), 14 states have internal predecessors, (168), 5 states have call successors, (60), 5 states have call predecessors, (60), 9 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) Word has length 441 [2023-12-19 14:11:19,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:11:19,076 INFO L225 Difference]: With dead ends: 114251 [2023-12-19 14:11:19,076 INFO L226 Difference]: Without dead ends: 27419 [2023-12-19 14:11:19,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2023-12-19 14:11:19,122 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 563 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 14:11:19,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 1618 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 14:11:19,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27419 states. [2023-12-19 14:11:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27419 to 17272. [2023-12-19 14:11:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17272 states, 14839 states have (on average 1.38223599973044) internal successors, (20511), 14857 states have internal predecessors, (20511), 1878 states have call successors, (1878), 554 states have call predecessors, (1878), 554 states have return successors, (1878), 1860 states have call predecessors, (1878), 1878 states have call successors, (1878) [2023-12-19 14:11:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17272 states to 17272 states and 24267 transitions. [2023-12-19 14:11:20,906 INFO L78 Accepts]: Start accepts. Automaton has 17272 states and 24267 transitions. Word has length 441 [2023-12-19 14:11:20,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:11:20,907 INFO L495 AbstractCegarLoop]: Abstraction has 17272 states and 24267 transitions. [2023-12-19 14:11:20,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.0) internal successors, (168), 14 states have internal predecessors, (168), 5 states have call successors, (60), 5 states have call predecessors, (60), 9 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) [2023-12-19 14:11:20,907 INFO L276 IsEmpty]: Start isEmpty. Operand 17272 states and 24267 transitions. [2023-12-19 14:11:20,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-19 14:11:20,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:11:20,910 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:20,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-19 14:11:21,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 14:11:21,111 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:11:21,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:11:21,111 INFO L85 PathProgramCache]: Analyzing trace with hash 549858705, now seen corresponding path program 1 times [2023-12-19 14:11:21,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:11:21,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813340094] [2023-12-19 14:11:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:21,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:11:21,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:11:21,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001917723] [2023-12-19 14:11:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:21,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:21,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:11:21,155 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:11:21,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-19 14:11:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:11:22,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 14:11:22,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:11:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 4352 proven. 111 refuted. 0 times theorem prover too weak. 2617 trivial. 0 not checked. [2023-12-19 14:11:24,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:11:25,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:11:25,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813340094] [2023-12-19 14:11:25,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:11:25,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001917723] [2023-12-19 14:11:25,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001917723] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 14:11:25,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 14:11:25,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-19 14:11:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619809581] [2023-12-19 14:11:25,392 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 14:11:25,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 14:11:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:11:25,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 14:11:25,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2023-12-19 14:11:25,393 INFO L87 Difference]: Start difference. First operand 17272 states and 24267 transitions. Second operand has 16 states, 16 states have (on average 9.75) internal successors, (156), 15 states have internal predecessors, (156), 3 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2023-12-19 14:11:30,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:11:30,182 INFO L93 Difference]: Finished difference Result 38227 states and 53132 transitions. [2023-12-19 14:11:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 14:11:30,183 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.75) internal successors, (156), 15 states have internal predecessors, (156), 3 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 441 [2023-12-19 14:11:30,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:11:30,213 INFO L225 Difference]: With dead ends: 38227 [2023-12-19 14:11:30,214 INFO L226 Difference]: Without dead ends: 21884 [2023-12-19 14:11:30,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=356, Invalid=1366, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 14:11:30,228 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 903 mSDsluCounter, 3621 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 4015 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 14:11:30,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 4015 Invalid, 2778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 14:11:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21884 states. [2023-12-19 14:11:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21884 to 19654. [2023-12-19 14:11:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19654 states, 16567 states have (on average 1.3660892134967104) internal successors, (22632), 16603 states have internal predecessors, (22632), 2328 states have call successors, (2328), 758 states have call predecessors, (2328), 758 states have return successors, (2328), 2292 states have call predecessors, (2328), 2328 states have call successors, (2328) [2023-12-19 14:11:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19654 states to 19654 states and 27288 transitions. [2023-12-19 14:11:32,714 INFO L78 Accepts]: Start accepts. Automaton has 19654 states and 27288 transitions. Word has length 441 [2023-12-19 14:11:32,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:11:32,714 INFO L495 AbstractCegarLoop]: Abstraction has 19654 states and 27288 transitions. [2023-12-19 14:11:32,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.75) internal successors, (156), 15 states have internal predecessors, (156), 3 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2023-12-19 14:11:32,714 INFO L276 IsEmpty]: Start isEmpty. Operand 19654 states and 27288 transitions. [2023-12-19 14:11:32,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-19 14:11:32,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:11:32,773 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:32,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-19 14:11:32,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:32,984 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:11:32,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:11:32,985 INFO L85 PathProgramCache]: Analyzing trace with hash -461258545, now seen corresponding path program 1 times [2023-12-19 14:11:32,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:11:32,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537585099] [2023-12-19 14:11:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:32,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:11:33,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:11:33,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483061705] [2023-12-19 14:11:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:33,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:33,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:11:33,073 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:11:33,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-19 14:11:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:11:36,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 14:11:36,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:11:40,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 1877 proven. 150 refuted. 0 times theorem prover too weak. 5053 trivial. 0 not checked. [2023-12-19 14:11:40,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:11:45,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:11:45,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537585099] [2023-12-19 14:11:45,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:11:45,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483061705] [2023-12-19 14:11:45,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483061705] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 14:11:45,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 14:11:45,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-19 14:11:45,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074794207] [2023-12-19 14:11:45,186 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 14:11:45,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 14:11:45,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:11:45,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 14:11:45,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=199, Unknown=1, NotChecked=0, Total=240 [2023-12-19 14:11:45,188 INFO L87 Difference]: Start difference. First operand 19654 states and 27288 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 10 states have internal predecessors, (150), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-19 14:11:50,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:11:50,516 INFO L93 Difference]: Finished difference Result 39156 states and 54688 transitions. [2023-12-19 14:11:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 14:11:50,517 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 10 states have internal predecessors, (150), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 441 [2023-12-19 14:11:50,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:11:50,544 INFO L225 Difference]: With dead ends: 39156 [2023-12-19 14:11:50,544 INFO L226 Difference]: Without dead ends: 21735 [2023-12-19 14:11:50,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 530 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=279, Invalid=910, Unknown=1, NotChecked=0, Total=1190 [2023-12-19 14:11:50,558 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1478 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 14:11:50,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 3417 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 14:11:50,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21735 states. [2023-12-19 14:11:52,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21735 to 19817. [2023-12-19 14:11:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19817 states, 16730 states have (on average 1.3651524208009564) internal successors, (22839), 16766 states have internal predecessors, (22839), 2328 states have call successors, (2328), 758 states have call predecessors, (2328), 758 states have return successors, (2328), 2292 states have call predecessors, (2328), 2328 states have call successors, (2328) [2023-12-19 14:11:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19817 states to 19817 states and 27495 transitions. [2023-12-19 14:11:52,686 INFO L78 Accepts]: Start accepts. Automaton has 19817 states and 27495 transitions. Word has length 441 [2023-12-19 14:11:52,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:11:52,686 INFO L495 AbstractCegarLoop]: Abstraction has 19817 states and 27495 transitions. [2023-12-19 14:11:52,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 10 states have internal predecessors, (150), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-19 14:11:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand 19817 states and 27495 transitions. [2023-12-19 14:11:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-19 14:11:52,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:11:52,691 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:52,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-19 14:11:52,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:52,904 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:11:52,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:11:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash -470066624, now seen corresponding path program 1 times [2023-12-19 14:11:52,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:11:52,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361613199] [2023-12-19 14:11:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:52,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:11:52,941 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:11:52,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284562996] [2023-12-19 14:11:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:11:52,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:11:52,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:11:52,943 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:11:52,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-19 14:12:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 14:12:02,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-19 14:12:02,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 14:12:06,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 4825 proven. 762 refuted. 0 times theorem prover too weak. 1493 trivial. 0 not checked. [2023-12-19 14:12:06,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 14:12:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 156 proven. 21 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2023-12-19 14:12:15,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 14:12:15,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361613199] [2023-12-19 14:12:15,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 14:12:15,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284562996] [2023-12-19 14:12:15,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284562996] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 14:12:15,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 14:12:15,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7] total 36 [2023-12-19 14:12:15,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032239991] [2023-12-19 14:12:15,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 14:12:15,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-19 14:12:15,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 14:12:15,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-19 14:12:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=954, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 14:12:15,258 INFO L87 Difference]: Start difference. First operand 19817 states and 27495 transitions. Second operand has 36 states, 36 states have (on average 8.36111111111111) internal successors, (301), 33 states have internal predecessors, (301), 11 states have call successors, (118), 10 states have call predecessors, (118), 16 states have return successors, (119), 11 states have call predecessors, (119), 11 states have call successors, (119) [2023-12-19 14:12:41,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 14:12:41,456 INFO L93 Difference]: Finished difference Result 46229 states and 62484 transitions. [2023-12-19 14:12:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-19 14:12:41,457 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.36111111111111) internal successors, (301), 33 states have internal predecessors, (301), 11 states have call successors, (118), 10 states have call predecessors, (118), 16 states have return successors, (119), 11 states have call predecessors, (119), 11 states have call successors, (119) Word has length 442 [2023-12-19 14:12:41,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 14:12:41,493 INFO L225 Difference]: With dead ends: 46229 [2023-12-19 14:12:41,493 INFO L226 Difference]: Without dead ends: 27534 [2023-12-19 14:12:41,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 849 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3335 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1848, Invalid=7272, Unknown=0, NotChecked=0, Total=9120 [2023-12-19 14:12:41,510 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 1737 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 2596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-19 14:12:41,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 1965 Invalid, 2596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-19 14:12:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27534 states. [2023-12-19 14:12:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27534 to 24898. [2023-12-19 14:12:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24898 states, 20895 states have (on average 1.3264417324718831) internal successors, (27716), 20935 states have internal predecessors, (27716), 2684 states have call successors, (2684), 1318 states have call predecessors, (2684), 1318 states have return successors, (2684), 2644 states have call predecessors, (2684), 2684 states have call successors, (2684) [2023-12-19 14:12:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24898 states to 24898 states and 33084 transitions. [2023-12-19 14:12:45,127 INFO L78 Accepts]: Start accepts. Automaton has 24898 states and 33084 transitions. Word has length 442 [2023-12-19 14:12:45,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 14:12:45,128 INFO L495 AbstractCegarLoop]: Abstraction has 24898 states and 33084 transitions. [2023-12-19 14:12:45,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.36111111111111) internal successors, (301), 33 states have internal predecessors, (301), 11 states have call successors, (118), 10 states have call predecessors, (118), 16 states have return successors, (119), 11 states have call predecessors, (119), 11 states have call successors, (119) [2023-12-19 14:12:45,128 INFO L276 IsEmpty]: Start isEmpty. Operand 24898 states and 33084 transitions. [2023-12-19 14:12:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-12-19 14:12:45,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 14:12:45,131 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:45,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-19 14:12:45,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:12:45,333 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 14:12:45,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 14:12:45,333 INFO L85 PathProgramCache]: Analyzing trace with hash -336336022, now seen corresponding path program 1 times [2023-12-19 14:12:45,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 14:12:45,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900365478] [2023-12-19 14:12:45,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:12:45,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 14:12:45,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 14:12:45,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431401382] [2023-12-19 14:12:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 14:12:45,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 14:12:45,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 14:12:45,370 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 14:12:45,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process