/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-19.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:17:03,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:17:03,286 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:17:03,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:17:03,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:17:03,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:17:03,323 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:17:03,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:17:03,324 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:17:03,328 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:17:03,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:17:03,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:17:03,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:17:03,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:17:03,331 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:17:03,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:17:03,331 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:17:03,331 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:17:03,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:17:03,332 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:17:03,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:17:03,332 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:17:03,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:17:03,333 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:17:03,333 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:17:03,333 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:17:03,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:17:03,334 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:17:03,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:17:03,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:17:03,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:17:03,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:17:03,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:17:03,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:17:03,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:17:03,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:17:03,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:17:03,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:17:03,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:17:03,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:17:03,336 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:17:03,336 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:17:03,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:17:03,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:17:03,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:17:03,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:17:03,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:17:03,609 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:17:03,610 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:17:03,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-19.i [2023-12-15 21:17:04,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:17:05,122 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:17:05,123 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-19.i [2023-12-15 21:17:05,140 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a6b5af57/d434df7dbe974cd69b121c20005d8acf/FLAG4fd0dbed8 [2023-12-15 21:17:05,151 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a6b5af57/d434df7dbe974cd69b121c20005d8acf [2023-12-15 21:17:05,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:17:05,154 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:17:05,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:17:05,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:17:05,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:17:05,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:05,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f7f46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05, skipping insertion in model container [2023-12-15 21:17:05,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:05,220 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:17:05,355 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-19.i[916,929] [2023-12-15 21:17:05,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:17:05,625 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:17:05,636 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-19.i[916,929] [2023-12-15 21:17:05,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:17:05,754 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:17:05,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05 WrapperNode [2023-12-15 21:17:05,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:17:05,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:17:05,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:17:05,757 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:17:05,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:05,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:05,939 INFO L138 Inliner]: procedures = 26, calls = 72, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 724 [2023-12-15 21:17:05,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:17:05,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:17:05,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:17:05,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:17:05,950 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:05,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:05,967 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:06,027 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]. [2023-12-15 21:17:06,028 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:06,028 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:06,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:06,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:06,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:06,119 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:06,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:17:06,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:17:06,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:17:06,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:17:06,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (1/1) ... [2023-12-15 21:17:06,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:17:06,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:06,178 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) [2023-12-15 21:17:06,191 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 [2023-12-15 21:17:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:17:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:17:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:17:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:17:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:17:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:17:06,379 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:17:06,383 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:17:07,318 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:17:07,387 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:17:07,387 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:17:07,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:17:07 BoogieIcfgContainer [2023-12-15 21:17:07,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:17:07,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:17:07,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:17:07,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:17:07,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:17:05" (1/3) ... [2023-12-15 21:17:07,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7d9fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:17:07, skipping insertion in model container [2023-12-15 21:17:07,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:17:05" (2/3) ... [2023-12-15 21:17:07,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7d9fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:17:07, skipping insertion in model container [2023-12-15 21:17:07,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:17:07" (3/3) ... [2023-12-15 21:17:07,395 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-19.i [2023-12-15 21:17:07,410 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:17:07,411 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:17:07,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:17:07,480 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;@7c4e8a3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:17:07,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:17:07,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 270 states, 208 states have (on average 1.6153846153846154) internal successors, (336), 209 states have internal predecessors, (336), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-15 21:17:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-15 21:17:07,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:07,515 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:07,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:07,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1411600372, now seen corresponding path program 1 times [2023-12-15 21:17:07,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:07,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928502655] [2023-12-15 21:17:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:07,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:07,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:07,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928502655] [2023-12-15 21:17:07,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:17:07,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962234990] [2023-12-15 21:17:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:07,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:07,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:07,908 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) [2023-12-15 21:17:07,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:17:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:08,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:17:08,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2023-12-15 21:17:08,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:08,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962234990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:08,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:08,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:17:08,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84864763] [2023-12-15 21:17:08,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:08,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:17:08,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:17:08,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:17:08,393 INFO L87 Difference]: Start difference. First operand has 270 states, 208 states have (on average 1.6153846153846154) internal successors, (336), 209 states have internal predecessors, (336), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-15 21:17:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:08,453 INFO L93 Difference]: Finished difference Result 537 states and 965 transitions. [2023-12-15 21:17:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:17:08,458 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) Word has length 418 [2023-12-15 21:17:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:08,470 INFO L225 Difference]: With dead ends: 537 [2023-12-15 21:17:08,470 INFO L226 Difference]: Without dead ends: 268 [2023-12-15 21:17:08,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:17:08,478 INFO L413 NwaCegarLoop]: 446 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, 446 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 [2023-12-15 21:17:08,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 446 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:17:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-15 21:17:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2023-12-15 21:17:08,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 207 states have (on average 1.5990338164251208) internal successors, (331), 207 states have internal predecessors, (331), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-15 21:17:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 449 transitions. [2023-12-15 21:17:08,538 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 449 transitions. Word has length 418 [2023-12-15 21:17:08,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:08,538 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 449 transitions. [2023-12-15 21:17:08,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 64.0) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-15 21:17:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 449 transitions. [2023-12-15 21:17:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-15 21:17:08,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:08,550 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:08,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 21:17:08,760 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 [2023-12-15 21:17:08,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:08,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:08,761 INFO L85 PathProgramCache]: Analyzing trace with hash 842997982, now seen corresponding path program 1 times [2023-12-15 21:17:08,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:08,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766433421] [2023-12-15 21:17:08,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:08,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:08,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:08,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106400608] [2023-12-15 21:17:08,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:08,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:08,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:08,870 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) [2023-12-15 21:17:08,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:17:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:09,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:17:09,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-15 21:17:09,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:09,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:09,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766433421] [2023-12-15 21:17:09,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:09,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106400608] [2023-12-15 21:17:09,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106400608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:09,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:09,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:17:09,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471974539] [2023-12-15 21:17:09,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:09,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:17:09,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:09,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:17:09,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:17:09,349 INFO L87 Difference]: Start difference. First operand 268 states and 449 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:09,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:09,790 INFO L93 Difference]: Finished difference Result 1214 states and 2033 transitions. [2023-12-15 21:17:09,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:17:09,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 418 [2023-12-15 21:17:09,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:09,799 INFO L225 Difference]: With dead ends: 1214 [2023-12-15 21:17:09,799 INFO L226 Difference]: Without dead ends: 947 [2023-12-15 21:17:09,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:17:09,802 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 1077 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:09,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1738 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:17:09,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2023-12-15 21:17:09,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 935. [2023-12-15 21:17:09,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 732 states have (on average 1.6038251366120218) internal successors, (1174), 734 states have internal predecessors, (1174), 198 states have call successors, (198), 4 states have call predecessors, (198), 4 states have return successors, (198), 196 states have call predecessors, (198), 198 states have call successors, (198) [2023-12-15 21:17:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1570 transitions. [2023-12-15 21:17:09,930 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1570 transitions. Word has length 418 [2023-12-15 21:17:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:09,935 INFO L495 AbstractCegarLoop]: Abstraction has 935 states and 1570 transitions. [2023-12-15 21:17:09,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1570 transitions. [2023-12-15 21:17:09,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-15 21:17:09,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:09,942 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:09,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 21:17:10,149 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 [2023-12-15 21:17:10,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:10,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:10,150 INFO L85 PathProgramCache]: Analyzing trace with hash -559911298, now seen corresponding path program 1 times [2023-12-15 21:17:10,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:10,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673525353] [2023-12-15 21:17:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:10,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:10,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:10,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620840726] [2023-12-15 21:17:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:10,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:10,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:10,243 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) [2023-12-15 21:17:10,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:17:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:10,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:17:10,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-15 21:17:10,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:10,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:10,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673525353] [2023-12-15 21:17:10,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:10,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620840726] [2023-12-15 21:17:10,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620840726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:10,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:10,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:17:10,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023674950] [2023-12-15 21:17:10,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:10,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:17:10,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:10,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:17:10,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:10,628 INFO L87 Difference]: Start difference. First operand 935 states and 1570 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:10,702 INFO L93 Difference]: Finished difference Result 1869 states and 3139 transitions. [2023-12-15 21:17:10,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:17:10,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 418 [2023-12-15 21:17:10,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:10,713 INFO L225 Difference]: With dead ends: 1869 [2023-12-15 21:17:10,713 INFO L226 Difference]: Without dead ends: 935 [2023-12-15 21:17:10,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:10,718 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 72 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:10,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 809 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:17:10,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2023-12-15 21:17:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 935. [2023-12-15 21:17:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 732 states have (on average 1.598360655737705) internal successors, (1170), 734 states have internal predecessors, (1170), 198 states have call successors, (198), 4 states have call predecessors, (198), 4 states have return successors, (198), 196 states have call predecessors, (198), 198 states have call successors, (198) [2023-12-15 21:17:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1566 transitions. [2023-12-15 21:17:10,791 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1566 transitions. Word has length 418 [2023-12-15 21:17:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:10,792 INFO L495 AbstractCegarLoop]: Abstraction has 935 states and 1566 transitions. [2023-12-15 21:17:10,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:10,792 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1566 transitions. [2023-12-15 21:17:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-15 21:17:10,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:10,796 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:10,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:11,003 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 [2023-12-15 21:17:11,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:11,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash 788605084, now seen corresponding path program 1 times [2023-12-15 21:17:11,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:11,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526344787] [2023-12-15 21:17:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:11,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:11,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133228208] [2023-12-15 21:17:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:11,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:11,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:11,081 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) [2023-12-15 21:17:11,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:17:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:11,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:17:11,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-15 21:17:11,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:11,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:11,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526344787] [2023-12-15 21:17:11,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:11,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133228208] [2023-12-15 21:17:11,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133228208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:11,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:11,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:17:11,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254187691] [2023-12-15 21:17:11,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:11,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:17:11,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:11,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:17:11,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:17:11,610 INFO L87 Difference]: Start difference. First operand 935 states and 1566 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:11,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:11,940 INFO L93 Difference]: Finished difference Result 2426 states and 4048 transitions. [2023-12-15 21:17:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:17:11,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 418 [2023-12-15 21:17:11,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:11,950 INFO L225 Difference]: With dead ends: 2426 [2023-12-15 21:17:11,950 INFO L226 Difference]: Without dead ends: 1492 [2023-12-15 21:17:11,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:17:11,956 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 670 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:11,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1224 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:17:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2023-12-15 21:17:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1261. [2023-12-15 21:17:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1038 states have (on average 1.5982658959537572) internal successors, (1659), 1044 states have internal predecessors, (1659), 214 states have call successors, (214), 8 states have call predecessors, (214), 8 states have return successors, (214), 208 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-15 21:17:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 2087 transitions. [2023-12-15 21:17:12,043 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 2087 transitions. Word has length 418 [2023-12-15 21:17:12,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:12,044 INFO L495 AbstractCegarLoop]: Abstraction has 1261 states and 2087 transitions. [2023-12-15 21:17:12,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:12,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 2087 transitions. [2023-12-15 21:17:12,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-15 21:17:12,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:12,051 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:12,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:12,260 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 [2023-12-15 21:17:12,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:12,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:12,261 INFO L85 PathProgramCache]: Analyzing trace with hash -799742818, now seen corresponding path program 1 times [2023-12-15 21:17:12,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:12,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053528388] [2023-12-15 21:17:12,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:12,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:12,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:12,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618462939] [2023-12-15 21:17:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:12,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:12,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:12,334 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) [2023-12-15 21:17:12,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:17:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:12,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:17:12,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-15 21:17:12,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:12,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:12,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053528388] [2023-12-15 21:17:12,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:12,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618462939] [2023-12-15 21:17:12,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618462939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:12,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:12,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:17:12,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106892137] [2023-12-15 21:17:12,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:12,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:17:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:17:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:17:12,847 INFO L87 Difference]: Start difference. First operand 1261 states and 2087 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:13,314 INFO L93 Difference]: Finished difference Result 6405 states and 10619 transitions. [2023-12-15 21:17:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:17:13,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 418 [2023-12-15 21:17:13,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:13,339 INFO L225 Difference]: With dead ends: 6405 [2023-12-15 21:17:13,339 INFO L226 Difference]: Without dead ends: 5145 [2023-12-15 21:17:13,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:17:13,346 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 1148 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:13,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 3081 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:17:13,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5145 states. [2023-12-15 21:17:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5145 to 4815. [2023-12-15 21:17:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4815 states, 3974 states have (on average 1.58379466532461) internal successors, (6294), 4002 states have internal predecessors, (6294), 808 states have call successors, (808), 32 states have call predecessors, (808), 32 states have return successors, (808), 780 states have call predecessors, (808), 808 states have call successors, (808) [2023-12-15 21:17:13,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 7910 transitions. [2023-12-15 21:17:13,694 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 7910 transitions. Word has length 418 [2023-12-15 21:17:13,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:13,694 INFO L495 AbstractCegarLoop]: Abstraction has 4815 states and 7910 transitions. [2023-12-15 21:17:13,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:13,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 7910 transitions. [2023-12-15 21:17:13,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-15 21:17:13,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:13,702 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:13,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:13,910 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 [2023-12-15 21:17:13,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:13,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:13,911 INFO L85 PathProgramCache]: Analyzing trace with hash -933756324, now seen corresponding path program 1 times [2023-12-15 21:17:13,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:13,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027937296] [2023-12-15 21:17:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:13,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:13,963 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:13,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720188468] [2023-12-15 21:17:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:13,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:13,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:13,965 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) [2023-12-15 21:17:13,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:17:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:14,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:17:14,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2550 proven. 132 refuted. 0 times theorem prover too weak. 4162 trivial. 0 not checked. [2023-12-15 21:17:14,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 42 proven. 132 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2023-12-15 21:17:15,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:15,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027937296] [2023-12-15 21:17:15,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:15,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720188468] [2023-12-15 21:17:15,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720188468] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:15,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:15,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:17:15,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289227427] [2023-12-15 21:17:15,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:15,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:17:15,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:15,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:17:15,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:17:15,130 INFO L87 Difference]: Start difference. First operand 4815 states and 7910 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-12-15 21:17:15,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:15,778 INFO L93 Difference]: Finished difference Result 9733 states and 15905 transitions. [2023-12-15 21:17:15,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:17:15,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 418 [2023-12-15 21:17:15,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:15,803 INFO L225 Difference]: With dead ends: 9733 [2023-12-15 21:17:15,803 INFO L226 Difference]: Without dead ends: 4919 [2023-12-15 21:17:15,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 828 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:17:15,816 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 509 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:15,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1016 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:17:15,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2023-12-15 21:17:16,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4884. [2023-12-15 21:17:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4884 states, 4013 states have (on average 1.5541988537253926) internal successors, (6237), 4042 states have internal predecessors, (6237), 822 states have call successors, (822), 48 states have call predecessors, (822), 48 states have return successors, (822), 793 states have call predecessors, (822), 822 states have call successors, (822) [2023-12-15 21:17:16,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 7881 transitions. [2023-12-15 21:17:16,146 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 7881 transitions. Word has length 418 [2023-12-15 21:17:16,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:16,147 INFO L495 AbstractCegarLoop]: Abstraction has 4884 states and 7881 transitions. [2023-12-15 21:17:16,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-12-15 21:17:16,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 7881 transitions. [2023-12-15 21:17:16,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-15 21:17:16,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:16,154 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:16,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:16,363 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 [2023-12-15 21:17:16,363 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:16,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:16,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1181902818, now seen corresponding path program 1 times [2023-12-15 21:17:16,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:16,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124946561] [2023-12-15 21:17:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:16,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:16,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:16,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64917321] [2023-12-15 21:17:16,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:16,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:16,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:16,427 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) [2023-12-15 21:17:16,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:17:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:16,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:17:16,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3018 proven. 54 refuted. 0 times theorem prover too weak. 3772 trivial. 0 not checked. [2023-12-15 21:17:16,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 120 proven. 54 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2023-12-15 21:17:17,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:17,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124946561] [2023-12-15 21:17:17,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:17,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64917321] [2023-12-15 21:17:17,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64917321] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:17,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:17,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:17:17,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155064982] [2023-12-15 21:17:17,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:17,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:17:17,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:17,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:17:17,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:17:17,210 INFO L87 Difference]: Start difference. First operand 4884 states and 7881 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 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) [2023-12-15 21:17:17,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:17,935 INFO L93 Difference]: Finished difference Result 7623 states and 12232 transitions. [2023-12-15 21:17:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:17:17,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 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 418 [2023-12-15 21:17:17,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:17,957 INFO L225 Difference]: With dead ends: 7623 [2023-12-15 21:17:17,957 INFO L226 Difference]: Without dead ends: 2761 [2023-12-15 21:17:17,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 828 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:17:17,968 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 329 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:17,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1167 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:17:17,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2023-12-15 21:17:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2732. [2023-12-15 21:17:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2194 states have (on average 1.5305378304466728) internal successors, (3358), 2207 states have internal predecessors, (3358), 496 states have call successors, (496), 41 states have call predecessors, (496), 41 states have return successors, (496), 483 states have call predecessors, (496), 496 states have call successors, (496) [2023-12-15 21:17:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 4350 transitions. [2023-12-15 21:17:18,144 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 4350 transitions. Word has length 418 [2023-12-15 21:17:18,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:18,144 INFO L495 AbstractCegarLoop]: Abstraction has 2732 states and 4350 transitions. [2023-12-15 21:17:18,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 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) [2023-12-15 21:17:18,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 4350 transitions. [2023-12-15 21:17:18,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-12-15 21:17:18,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:18,149 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:18,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:18,358 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 [2023-12-15 21:17:18,358 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:18,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:18,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1753368670, now seen corresponding path program 1 times [2023-12-15 21:17:18,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:18,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786586533] [2023-12-15 21:17:18,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:18,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:18,412 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:18,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535594157] [2023-12-15 21:17:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:18,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:18,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:18,414 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) [2023-12-15 21:17:18,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:17:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:18,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:17:18,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-15 21:17:18,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:18,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:18,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786586533] [2023-12-15 21:17:18,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:18,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535594157] [2023-12-15 21:17:18,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535594157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:18,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:18,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:17:18,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194850775] [2023-12-15 21:17:18,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:18,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:17:18,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:18,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:17:18,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:18,889 INFO L87 Difference]: Start difference. First operand 2732 states and 4350 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:19,099 INFO L93 Difference]: Finished difference Result 6932 states and 11058 transitions. [2023-12-15 21:17:19,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:17:19,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 419 [2023-12-15 21:17:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:19,117 INFO L225 Difference]: With dead ends: 6932 [2023-12-15 21:17:19,118 INFO L226 Difference]: Without dead ends: 4270 [2023-12-15 21:17:19,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:17:19,127 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 225 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:19,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 841 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:17:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2023-12-15 21:17:19,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 4260. [2023-12-15 21:17:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 3594 states have (on average 1.543683917640512) internal successors, (5548), 3623 states have internal predecessors, (5548), 608 states have call successors, (608), 57 states have call predecessors, (608), 57 states have return successors, (608), 579 states have call predecessors, (608), 608 states have call successors, (608) [2023-12-15 21:17:19,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 6764 transitions. [2023-12-15 21:17:19,399 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 6764 transitions. Word has length 419 [2023-12-15 21:17:19,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:19,400 INFO L495 AbstractCegarLoop]: Abstraction has 4260 states and 6764 transitions. [2023-12-15 21:17:19,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:19,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 6764 transitions. [2023-12-15 21:17:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-12-15 21:17:19,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:19,407 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:19,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:19,616 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 [2023-12-15 21:17:19,617 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:19,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:19,617 INFO L85 PathProgramCache]: Analyzing trace with hash -848240829, now seen corresponding path program 1 times [2023-12-15 21:17:19,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:19,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702834563] [2023-12-15 21:17:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:19,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:19,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:19,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591602362] [2023-12-15 21:17:19,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:19,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:19,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:19,680 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) [2023-12-15 21:17:19,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:17:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:20,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:17:20,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2148 proven. 141 refuted. 0 times theorem prover too weak. 4555 trivial. 0 not checked. [2023-12-15 21:17:20,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 33 proven. 141 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2023-12-15 21:17:20,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:20,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702834563] [2023-12-15 21:17:20,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:20,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591602362] [2023-12-15 21:17:20,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591602362] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:20,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:20,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:17:20,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766306619] [2023-12-15 21:17:20,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:20,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:17:20,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:20,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:17:20,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:17:20,793 INFO L87 Difference]: Start difference. First operand 4260 states and 6764 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2023-12-15 21:17:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:21,265 INFO L93 Difference]: Finished difference Result 6852 states and 10818 transitions. [2023-12-15 21:17:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:17:21,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 419 [2023-12-15 21:17:21,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:21,295 INFO L225 Difference]: With dead ends: 6852 [2023-12-15 21:17:21,295 INFO L226 Difference]: Without dead ends: 2662 [2023-12-15 21:17:21,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 830 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:17:21,305 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 263 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:21,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 878 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:17:21,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2023-12-15 21:17:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2616. [2023-12-15 21:17:21,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2616 states, 2069 states have (on average 1.485258579023683) internal successors, (3073), 2082 states have internal predecessors, (3073), 496 states have call successors, (496), 50 states have call predecessors, (496), 50 states have return successors, (496), 483 states have call predecessors, (496), 496 states have call successors, (496) [2023-12-15 21:17:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 4065 transitions. [2023-12-15 21:17:21,456 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 4065 transitions. Word has length 419 [2023-12-15 21:17:21,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:21,456 INFO L495 AbstractCegarLoop]: Abstraction has 2616 states and 4065 transitions. [2023-12-15 21:17:21,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2023-12-15 21:17:21,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 4065 transitions. [2023-12-15 21:17:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-12-15 21:17:21,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:21,462 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:21,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:21,671 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 [2023-12-15 21:17:21,671 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:21,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:21,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1493582123, now seen corresponding path program 1 times [2023-12-15 21:17:21,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:21,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216565433] [2023-12-15 21:17:21,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:21,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:21,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:21,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814112245] [2023-12-15 21:17:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:21,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:21,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:21,730 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) [2023-12-15 21:17:21,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:17:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:22,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:17:22,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-15 21:17:22,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:22,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:22,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216565433] [2023-12-15 21:17:22,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:22,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814112245] [2023-12-15 21:17:22,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814112245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:22,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:22,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:17:22,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776403937] [2023-12-15 21:17:22,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:22,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:17:22,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:22,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:17:22,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:17:22,724 INFO L87 Difference]: Start difference. First operand 2616 states and 4065 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:23,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:23,425 INFO L93 Difference]: Finished difference Result 9454 states and 14789 transitions. [2023-12-15 21:17:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:17:23,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 420 [2023-12-15 21:17:23,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:23,445 INFO L225 Difference]: With dead ends: 9454 [2023-12-15 21:17:23,445 INFO L226 Difference]: Without dead ends: 6720 [2023-12-15 21:17:23,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:17:23,454 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 1597 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:23,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 1572 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:17:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2023-12-15 21:17:23,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 4868. [2023-12-15 21:17:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4868 states, 3972 states have (on average 1.4964753272910372) internal successors, (5944), 3999 states have internal predecessors, (5944), 804 states have call successors, (804), 91 states have call predecessors, (804), 91 states have return successors, (804), 777 states have call predecessors, (804), 804 states have call successors, (804) [2023-12-15 21:17:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4868 states to 4868 states and 7552 transitions. [2023-12-15 21:17:23,754 INFO L78 Accepts]: Start accepts. Automaton has 4868 states and 7552 transitions. Word has length 420 [2023-12-15 21:17:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:23,755 INFO L495 AbstractCegarLoop]: Abstraction has 4868 states and 7552 transitions. [2023-12-15 21:17:23,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4868 states and 7552 transitions. [2023-12-15 21:17:23,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-12-15 21:17:23,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:23,761 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:23,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:23,968 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 [2023-12-15 21:17:23,969 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:23,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:23,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1439189225, now seen corresponding path program 1 times [2023-12-15 21:17:23,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:23,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088025246] [2023-12-15 21:17:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:23,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:24,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:24,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961228135] [2023-12-15 21:17:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:24,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:24,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:24,057 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) [2023-12-15 21:17:24,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:17:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:24,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:17:24,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-15 21:17:24,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:24,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:24,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088025246] [2023-12-15 21:17:24,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:24,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961228135] [2023-12-15 21:17:24,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961228135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:24,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:24,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:17:24,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66708545] [2023-12-15 21:17:24,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:24,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:17:24,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:17:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:17:24,502 INFO L87 Difference]: Start difference. First operand 4868 states and 7552 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:25,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:25,185 INFO L93 Difference]: Finished difference Result 20004 states and 31092 transitions. [2023-12-15 21:17:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:17:25,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 420 [2023-12-15 21:17:25,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:25,267 INFO L225 Difference]: With dead ends: 20004 [2023-12-15 21:17:25,267 INFO L226 Difference]: Without dead ends: 15214 [2023-12-15 21:17:25,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:17:25,278 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 993 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:25,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 2049 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:17:25,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15214 states. [2023-12-15 21:17:25,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15214 to 13896. [2023-12-15 21:17:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13896 states, 11764 states have (on average 1.5153009180550834) internal successors, (17826), 11849 states have internal predecessors, (17826), 1888 states have call successors, (1888), 243 states have call predecessors, (1888), 243 states have return successors, (1888), 1803 states have call predecessors, (1888), 1888 states have call successors, (1888) [2023-12-15 21:17:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13896 states to 13896 states and 21602 transitions. [2023-12-15 21:17:25,940 INFO L78 Accepts]: Start accepts. Automaton has 13896 states and 21602 transitions. Word has length 420 [2023-12-15 21:17:25,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:25,940 INFO L495 AbstractCegarLoop]: Abstraction has 13896 states and 21602 transitions. [2023-12-15 21:17:25,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:25,941 INFO L276 IsEmpty]: Start isEmpty. Operand 13896 states and 21602 transitions. [2023-12-15 21:17:25,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-12-15 21:17:25,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:25,952 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:25,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:26,160 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 [2023-12-15 21:17:26,160 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:26,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:26,161 INFO L85 PathProgramCache]: Analyzing trace with hash 355685417, now seen corresponding path program 1 times [2023-12-15 21:17:26,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:26,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882545609] [2023-12-15 21:17:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:26,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:26,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:26,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236627655] [2023-12-15 21:17:26,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:26,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:26,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:26,208 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) [2023-12-15 21:17:26,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:17:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:26,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:17:26,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-15 21:17:26,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:17:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:26,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882545609] [2023-12-15 21:17:26,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:26,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236627655] [2023-12-15 21:17:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236627655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:17:26,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:17:26,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:17:26,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451008752] [2023-12-15 21:17:26,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:17:26,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:17:26,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:26,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:17:26,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:17:26,681 INFO L87 Difference]: Start difference. First operand 13896 states and 21602 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:27,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:27,620 INFO L93 Difference]: Finished difference Result 36828 states and 57030 transitions. [2023-12-15 21:17:27,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:17:27,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 420 [2023-12-15 21:17:27,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:27,683 INFO L225 Difference]: With dead ends: 36828 [2023-12-15 21:17:27,683 INFO L226 Difference]: Without dead ends: 23010 [2023-12-15 21:17:27,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:17:27,713 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 645 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:27,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 1815 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:17:27,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23010 states. [2023-12-15 21:17:28,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23010 to 15140. [2023-12-15 21:17:28,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15140 states, 13008 states have (on average 1.527521525215252) internal successors, (19870), 13093 states have internal predecessors, (19870), 1888 states have call successors, (1888), 243 states have call predecessors, (1888), 243 states have return successors, (1888), 1803 states have call predecessors, (1888), 1888 states have call successors, (1888) [2023-12-15 21:17:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15140 states to 15140 states and 23646 transitions. [2023-12-15 21:17:28,523 INFO L78 Accepts]: Start accepts. Automaton has 15140 states and 23646 transitions. Word has length 420 [2023-12-15 21:17:28,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:28,524 INFO L495 AbstractCegarLoop]: Abstraction has 15140 states and 23646 transitions. [2023-12-15 21:17:28,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-15 21:17:28,524 INFO L276 IsEmpty]: Start isEmpty. Operand 15140 states and 23646 transitions. [2023-12-15 21:17:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-12-15 21:17:28,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:28,537 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:28,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:28,745 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 [2023-12-15 21:17:28,746 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:28,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:28,746 INFO L85 PathProgramCache]: Analyzing trace with hash -892927383, now seen corresponding path program 1 times [2023-12-15 21:17:28,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:28,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231942303] [2023-12-15 21:17:28,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:28,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:28,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:28,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267514308] [2023-12-15 21:17:28,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:28,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:28,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:28,797 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) [2023-12-15 21:17:28,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:17:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:29,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 21:17:29,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 1436 proven. 474 refuted. 0 times theorem prover too weak. 4934 trivial. 0 not checked. [2023-12-15 21:17:31,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:32,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:32,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231942303] [2023-12-15 21:17:32,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:32,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267514308] [2023-12-15 21:17:32,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267514308] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:17:32,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:17:32,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-15 21:17:32,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794601837] [2023-12-15 21:17:32,151 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:32,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 21:17:32,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:32,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 21:17:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:17:32,153 INFO L87 Difference]: Start difference. First operand 15140 states and 23646 transitions. Second operand has 14 states, 14 states have (on average 10.214285714285714) internal successors, (143), 14 states have internal predecessors, (143), 4 states have call successors, (59), 4 states have call predecessors, (59), 6 states have return successors, (59), 3 states have call predecessors, (59), 4 states have call successors, (59) [2023-12-15 21:17:34,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:34,171 INFO L93 Difference]: Finished difference Result 50424 states and 77948 transitions. [2023-12-15 21:17:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-15 21:17:34,172 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.214285714285714) internal successors, (143), 14 states have internal predecessors, (143), 4 states have call successors, (59), 4 states have call predecessors, (59), 6 states have return successors, (59), 3 states have call predecessors, (59), 4 states have call successors, (59) Word has length 420 [2023-12-15 21:17:34,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:34,255 INFO L225 Difference]: With dead ends: 50424 [2023-12-15 21:17:34,255 INFO L226 Difference]: Without dead ends: 35362 [2023-12-15 21:17:34,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2023-12-15 21:17:34,287 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1934 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:34,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1935 Valid, 1437 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 21:17:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35362 states. [2023-12-15 21:17:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35362 to 21108. [2023-12-15 21:17:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21108 states, 18781 states have (on average 1.547042223523774) internal successors, (29055), 18866 states have internal predecessors, (29055), 1888 states have call successors, (1888), 438 states have call predecessors, (1888), 438 states have return successors, (1888), 1803 states have call predecessors, (1888), 1888 states have call successors, (1888) [2023-12-15 21:17:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21108 states to 21108 states and 32831 transitions. [2023-12-15 21:17:35,387 INFO L78 Accepts]: Start accepts. Automaton has 21108 states and 32831 transitions. Word has length 420 [2023-12-15 21:17:35,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:35,388 INFO L495 AbstractCegarLoop]: Abstraction has 21108 states and 32831 transitions. [2023-12-15 21:17:35,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.214285714285714) internal successors, (143), 14 states have internal predecessors, (143), 4 states have call successors, (59), 4 states have call predecessors, (59), 6 states have return successors, (59), 3 states have call predecessors, (59), 4 states have call successors, (59) [2023-12-15 21:17:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 21108 states and 32831 transitions. [2023-12-15 21:17:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-12-15 21:17:35,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:35,401 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:35,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:35,618 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 [2023-12-15 21:17:35,618 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:35,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:35,619 INFO L85 PathProgramCache]: Analyzing trace with hash -291588300, now seen corresponding path program 1 times [2023-12-15 21:17:35,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:35,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031985370] [2023-12-15 21:17:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:35,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:35,666 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:35,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810262212] [2023-12-15 21:17:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:35,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:35,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:35,668 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) [2023-12-15 21:17:35,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:17:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:36,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 21:17:36,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:17:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 568 proven. 330 refuted. 0 times theorem prover too weak. 5946 trivial. 0 not checked. [2023-12-15 21:17:37,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:17:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 6 proven. 168 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2023-12-15 21:17:38,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:17:38,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031985370] [2023-12-15 21:17:38,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:17:38,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810262212] [2023-12-15 21:17:38,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810262212] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:17:38,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:17:38,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-12-15 21:17:38,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221395612] [2023-12-15 21:17:38,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:17:38,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 21:17:38,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:17:38,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 21:17:38,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:17:38,238 INFO L87 Difference]: Start difference. First operand 21108 states and 32831 transitions. Second operand has 19 states, 19 states have (on average 12.421052631578947) internal successors, (236), 18 states have internal predecessors, (236), 4 states have call successors, (115), 3 states have call predecessors, (115), 5 states have return successors, (116), 4 states have call predecessors, (116), 4 states have call successors, (116) [2023-12-15 21:17:46,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:17:46,496 INFO L93 Difference]: Finished difference Result 192290 states and 299129 transitions. [2023-12-15 21:17:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-15 21:17:46,496 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.421052631578947) internal successors, (236), 18 states have internal predecessors, (236), 4 states have call successors, (115), 3 states have call predecessors, (115), 5 states have return successors, (116), 4 states have call predecessors, (116), 4 states have call successors, (116) Word has length 420 [2023-12-15 21:17:46,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:17:46,880 INFO L225 Difference]: With dead ends: 192290 [2023-12-15 21:17:46,880 INFO L226 Difference]: Without dead ends: 171272 [2023-12-15 21:17:46,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 831 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2243 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1213, Invalid=5593, Unknown=0, NotChecked=0, Total=6806 [2023-12-15 21:17:46,944 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 5524 mSDsluCounter, 4352 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 1097 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5529 SdHoareTripleChecker+Valid, 4870 SdHoareTripleChecker+Invalid, 3752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1097 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:17:46,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5529 Valid, 4870 Invalid, 3752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1097 Valid, 2655 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 21:17:47,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171272 states. [2023-12-15 21:17:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171272 to 101300. [2023-12-15 21:17:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101300 states, 90611 states have (on average 1.5335776009535267) internal successors, (138959), 91004 states have internal predecessors, (138959), 8216 states have call successors, (8216), 2472 states have call predecessors, (8216), 2472 states have return successors, (8216), 7823 states have call predecessors, (8216), 8216 states have call successors, (8216) [2023-12-15 21:17:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101300 states to 101300 states and 155391 transitions. [2023-12-15 21:17:52,913 INFO L78 Accepts]: Start accepts. Automaton has 101300 states and 155391 transitions. Word has length 420 [2023-12-15 21:17:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:17:52,915 INFO L495 AbstractCegarLoop]: Abstraction has 101300 states and 155391 transitions. [2023-12-15 21:17:52,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.421052631578947) internal successors, (236), 18 states have internal predecessors, (236), 4 states have call successors, (115), 3 states have call predecessors, (115), 5 states have return successors, (116), 4 states have call predecessors, (116), 4 states have call successors, (116) [2023-12-15 21:17:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand 101300 states and 155391 transitions. [2023-12-15 21:17:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-12-15 21:17:53,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:17:53,226 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:53,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:53,435 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 [2023-12-15 21:17:53,436 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:17:53,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:17:53,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1631639734, now seen corresponding path program 1 times [2023-12-15 21:17:53,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:17:53,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629993325] [2023-12-15 21:17:53,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:53,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:17:53,492 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:17:53,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906261952] [2023-12-15 21:17:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:17:53,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:17:53,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:17:53,494 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) [2023-12-15 21:17:53,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:17:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:17:54,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 21:17:54,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 21:17:54,472 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:17:54,474 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:17:54,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 21:17:54,498 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:17:54,684 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 [2023-12-15 21:17:54,684 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 421 with TraceHistMax 59,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-15 21:17:54,689 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:17:54,691 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:17:54,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:17:54 BoogieIcfgContainer [2023-12-15 21:17:54,693 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:17:54,694 INFO L158 Benchmark]: Toolchain (without parser) took 49539.98ms. Allocated memory was 199.2MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 161.5MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 811.8MB. Max. memory is 8.0GB. [2023-12-15 21:17:54,694 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 199.2MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:17:54,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 599.14ms. Allocated memory is still 199.2MB. Free memory was 161.5MB in the beginning and 124.1MB in the end (delta: 37.4MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-15 21:17:54,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 183.23ms. Allocated memory is still 199.2MB. Free memory was 124.1MB in the beginning and 158.2MB in the end (delta: -34.1MB). Peak memory consumption was 30.0MB. Max. memory is 8.0GB. [2023-12-15 21:17:54,695 INFO L158 Benchmark]: Boogie Preprocessor took 203.99ms. Allocated memory is still 199.2MB. Free memory was 158.2MB in the beginning and 112.1MB in the end (delta: 46.2MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. [2023-12-15 21:17:54,695 INFO L158 Benchmark]: RCFGBuilder took 1242.46ms. Allocated memory was 199.2MB in the beginning and 267.4MB in the end (delta: 68.2MB). Free memory was 112.1MB in the beginning and 222.6MB in the end (delta: -110.6MB). Peak memory consumption was 46.7MB. Max. memory is 8.0GB. [2023-12-15 21:17:54,695 INFO L158 Benchmark]: TraceAbstraction took 47303.72ms. Allocated memory was 267.4MB in the beginning and 3.9GB in the end (delta: 3.6GB). Free memory was 222.1MB in the beginning and 3.0GB in the end (delta: -2.8GB). Peak memory consumption was 803.2MB. Max. memory is 8.0GB. [2023-12-15 21:17:54,697 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 199.2MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 599.14ms. Allocated memory is still 199.2MB. Free memory was 161.5MB in the beginning and 124.1MB in the end (delta: 37.4MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 183.23ms. Allocated memory is still 199.2MB. Free memory was 124.1MB in the beginning and 158.2MB in the end (delta: -34.1MB). Peak memory consumption was 30.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 203.99ms. Allocated memory is still 199.2MB. Free memory was 158.2MB in the beginning and 112.1MB in the end (delta: 46.2MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1242.46ms. Allocated memory was 199.2MB in the beginning and 267.4MB in the end (delta: 68.2MB). Free memory was 112.1MB in the beginning and 222.6MB in the end (delta: -110.6MB). Peak memory consumption was 46.7MB. Max. memory is 8.0GB. * TraceAbstraction took 47303.72ms. Allocated memory was 267.4MB in the beginning and 3.9GB in the end (delta: 3.6GB). Free memory was 222.1MB in the beginning and 3.0GB in the end (delta: -2.8GB). Peak memory consumption was 803.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 421 with TraceHistMax 59,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 270 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.2s, OverallIterations: 15, TraceHistogramMax: 59, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 17.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15056 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14986 mSDsluCounter, 22943 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15732 mSDsCounter, 1461 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6200 IncrementalHoareTripleChecker+Invalid, 7661 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1461 mSolverCounterUnsat, 7211 mSDtfsCounter, 6200 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7723 GetRequests, 7555 SyntacticMatches, 3 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101300occurred in iteration=14, InterpolantAutomatonStates: 169, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 95959 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 6282 NumberOfCodeBlocks, 6282 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 7521 ConstructedInterpolants, 0 QuantifiedInterpolants, 24929 SizeOfPredicates, 39 NumberOfNonLiveVariables, 15168 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 121566/123192 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown