/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-6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:20:50,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:20:50,722 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 21:20:50,739 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:20:50,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:20:50,764 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:20:50,765 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:20:50,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:20:50,766 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:20:50,783 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:20:50,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:20:50,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:20:50,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:20:50,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:20:50,785 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:20:50,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:20:50,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:20:50,786 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:20:50,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:20:50,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:20:50,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:20:50,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:20:50,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:20:50,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:20:50,787 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:20:50,787 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:20:50,787 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:20:50,787 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:20:50,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:20:50,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:20:50,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:20:50,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:20:50,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:20:50,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:20:50,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:20:50,789 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:20:50,789 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:20:50,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:20:50,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:20:50,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:20:50,790 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:20:50,793 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:20:50,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:20:50,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:20:51,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:20:51,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:20:51,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:20:51,123 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:20:51,124 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:20:51,125 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-6.i [2023-12-15 21:20:52,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:20:52,399 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:20:52,399 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-6.i [2023-12-15 21:20:52,409 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547682aa7/abb24e7d77e14d2aae678ae7ea438034/FLAG38f67fcbd [2023-12-15 21:20:52,423 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547682aa7/abb24e7d77e14d2aae678ae7ea438034 [2023-12-15 21:20:52,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:20:52,425 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:20:52,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:20:52,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:20:52,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:20:52,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:52,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25364aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52, skipping insertion in model container [2023-12-15 21:20:52,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:52,471 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:20:52,576 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-6.i[915,928] [2023-12-15 21:20:52,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:20:52,807 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:20:52,814 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-6.i[915,928] [2023-12-15 21:20:52,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:20:52,953 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:20:52,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52 WrapperNode [2023-12-15 21:20:52,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:20:52,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:20:52,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:20:52,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:20:52,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:52,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:53,076 INFO L138 Inliner]: procedures = 26, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 625 [2023-12-15 21:20:53,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:20:53,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:20:53,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:20:53,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:20:53,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:53,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:53,101 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:53,159 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 21:20:53,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:53,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:53,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:53,210 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:53,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:53,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:53,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:20:53,248 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:20:53,248 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:20:53,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:20:53,249 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (1/1) ... [2023-12-15 21:20:53,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:20:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:53,270 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 21:20:53,292 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 21:20:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:20:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:20:53,307 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:20:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:20:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:20:53,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:20:53,419 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:20:53,421 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:20:54,183 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:20:54,224 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:20:54,225 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:20:54,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:20:54 BoogieIcfgContainer [2023-12-15 21:20:54,225 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:20:54,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:20:54,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:20:54,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:20:54,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:20:52" (1/3) ... [2023-12-15 21:20:54,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2305c564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:20:54, skipping insertion in model container [2023-12-15 21:20:54,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:20:52" (2/3) ... [2023-12-15 21:20:54,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2305c564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:20:54, skipping insertion in model container [2023-12-15 21:20:54,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:20:54" (3/3) ... [2023-12-15 21:20:54,232 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-6.i [2023-12-15 21:20:54,243 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:20:54,244 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:20:54,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:20:54,299 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;@5a436bfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:20:54,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:20:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 225 states, 165 states have (on average 1.6181818181818182) internal successors, (267), 166 states have internal predecessors, (267), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-15 21:20:54,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-15 21:20:54,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:54,345 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:54,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:54,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash -338494103, now seen corresponding path program 1 times [2023-12-15 21:20:54,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:54,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943707509] [2023-12-15 21:20:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:54,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:54,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943707509] [2023-12-15 21:20:54,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:20:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189539214] [2023-12-15 21:20:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:54,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:54,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:54,627 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 21:20:54,648 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 21:20:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:54,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:20:54,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2023-12-15 21:20:54,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:54,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189539214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:54,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:54,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:20:54,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559717976] [2023-12-15 21:20:54,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:54,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:20:54,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:55,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:20:55,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:20:55,017 INFO L87 Difference]: Start difference. First operand has 225 states, 165 states have (on average 1.6181818181818182) internal successors, (267), 166 states have internal predecessors, (267), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 62.0) internal successors, (124), 2 states have internal predecessors, (124), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-15 21:20:55,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:55,057 INFO L93 Difference]: Finished difference Result 446 states and 815 transitions. [2023-12-15 21:20:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:20:55,059 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 62.0) internal successors, (124), 2 states have internal predecessors, (124), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) Word has length 404 [2023-12-15 21:20:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:55,064 INFO L225 Difference]: With dead ends: 446 [2023-12-15 21:20:55,065 INFO L226 Difference]: Without dead ends: 222 [2023-12-15 21:20:55,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 403 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 21:20:55,070 INFO L413 NwaCegarLoop]: 370 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, 370 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 21:20:55,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 370 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:20:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-15 21:20:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2023-12-15 21:20:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 163 states have (on average 1.5889570552147239) internal successors, (259), 163 states have internal predecessors, (259), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-15 21:20:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 373 transitions. [2023-12-15 21:20:55,106 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 373 transitions. Word has length 404 [2023-12-15 21:20:55,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:55,107 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 373 transitions. [2023-12-15 21:20:55,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 62.0) internal successors, (124), 2 states have internal predecessors, (124), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-15 21:20:55,107 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 373 transitions. [2023-12-15 21:20:55,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-15 21:20:55,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:55,112 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:55,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:55,319 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 21:20:55,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:55,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:55,320 INFO L85 PathProgramCache]: Analyzing trace with hash -471695493, now seen corresponding path program 1 times [2023-12-15 21:20:55,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:55,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827910041] [2023-12-15 21:20:55,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:55,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:55,448 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:55,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063225012] [2023-12-15 21:20:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:55,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:55,451 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 21:20:55,481 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 21:20:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:55,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:20:55,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-15 21:20:55,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:55,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:55,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827910041] [2023-12-15 21:20:55,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:55,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063225012] [2023-12-15 21:20:55,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063225012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:55,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:55,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:20:55,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24769492] [2023-12-15 21:20:55,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:55,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:20:55,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:55,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:20:55,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:55,799 INFO L87 Difference]: Start difference. First operand 222 states and 373 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:20:55,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:55,868 INFO L93 Difference]: Finished difference Result 627 states and 1053 transitions. [2023-12-15 21:20:55,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:20:55,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 404 [2023-12-15 21:20:55,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:55,872 INFO L225 Difference]: With dead ends: 627 [2023-12-15 21:20:55,872 INFO L226 Difference]: Without dead ends: 406 [2023-12-15 21:20:55,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 402 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 21:20:55,873 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 297 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:55,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 814 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:20:55,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-12-15 21:20:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 403. [2023-12-15 21:20:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 304 states have (on average 1.5921052631578947) internal successors, (484), 305 states have internal predecessors, (484), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 95 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-15 21:20:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 676 transitions. [2023-12-15 21:20:55,897 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 676 transitions. Word has length 404 [2023-12-15 21:20:55,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:55,898 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 676 transitions. [2023-12-15 21:20:55,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:20:55,899 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 676 transitions. [2023-12-15 21:20:55,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-15 21:20:55,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:55,903 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:55,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:20:56,110 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 21:20:56,110 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:56,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:56,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1614197959, now seen corresponding path program 1 times [2023-12-15 21:20:56,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:56,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781216750] [2023-12-15 21:20:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:56,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:56,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:56,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756311247] [2023-12-15 21:20:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:56,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:56,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:56,193 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 21:20:56,220 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 21:20:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:56,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:20:56,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-15 21:20:56,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:56,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:56,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781216750] [2023-12-15 21:20:56,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:56,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756311247] [2023-12-15 21:20:56,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756311247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:56,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:56,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:20:56,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289196311] [2023-12-15 21:20:56,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:56,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:20:56,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:56,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:20:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:56,677 INFO L87 Difference]: Start difference. First operand 403 states and 676 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:20:56,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:56,760 INFO L93 Difference]: Finished difference Result 1197 states and 2006 transitions. [2023-12-15 21:20:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:20:56,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 404 [2023-12-15 21:20:56,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:56,766 INFO L225 Difference]: With dead ends: 1197 [2023-12-15 21:20:56,766 INFO L226 Difference]: Without dead ends: 795 [2023-12-15 21:20:56,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 402 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 21:20:56,768 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 333 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:56,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 699 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:20:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-12-15 21:20:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 793. [2023-12-15 21:20:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 596 states have (on average 1.563758389261745) internal successors, (932), 598 states have internal predecessors, (932), 192 states have call successors, (192), 4 states have call predecessors, (192), 4 states have return successors, (192), 190 states have call predecessors, (192), 192 states have call successors, (192) [2023-12-15 21:20:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1316 transitions. [2023-12-15 21:20:56,808 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1316 transitions. Word has length 404 [2023-12-15 21:20:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:56,809 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1316 transitions. [2023-12-15 21:20:56,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:20:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1316 transitions. [2023-12-15 21:20:56,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-15 21:20:56,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:56,813 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:56,833 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 21:20:57,019 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 21:20:57,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:57,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:57,020 INFO L85 PathProgramCache]: Analyzing trace with hash -897079367, now seen corresponding path program 1 times [2023-12-15 21:20:57,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:57,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856178840] [2023-12-15 21:20:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:57,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:57,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:57,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426470418] [2023-12-15 21:20:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:57,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:57,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:57,066 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 21:20:57,104 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 21:20:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:57,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:20:57,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-15 21:20:57,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:57,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:57,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856178840] [2023-12-15 21:20:57,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:57,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426470418] [2023-12-15 21:20:57,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426470418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:57,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:57,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:20:57,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159790956] [2023-12-15 21:20:57,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:57,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:20:57,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:57,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:20:57,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:20:57,376 INFO L87 Difference]: Start difference. First operand 793 states and 1316 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:20:57,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:57,481 INFO L93 Difference]: Finished difference Result 2369 states and 3930 transitions. [2023-12-15 21:20:57,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:20:57,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 404 [2023-12-15 21:20:57,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:57,487 INFO L225 Difference]: With dead ends: 2369 [2023-12-15 21:20:57,487 INFO L226 Difference]: Without dead ends: 1577 [2023-12-15 21:20:57,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 402 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 21:20:57,489 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 364 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:57,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 787 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:20:57,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2023-12-15 21:20:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 867. [2023-12-15 21:20:57,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 670 states have (on average 1.5611940298507463) internal successors, (1046), 672 states have internal predecessors, (1046), 192 states have call successors, (192), 4 states have call predecessors, (192), 4 states have return successors, (192), 190 states have call predecessors, (192), 192 states have call successors, (192) [2023-12-15 21:20:57,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1430 transitions. [2023-12-15 21:20:57,546 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1430 transitions. Word has length 404 [2023-12-15 21:20:57,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:57,547 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1430 transitions. [2023-12-15 21:20:57,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:20:57,547 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1430 transitions. [2023-12-15 21:20:57,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-15 21:20:57,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:57,551 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:57,560 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 21:20:57,758 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 21:20:57,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:57,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1575153017, now seen corresponding path program 1 times [2023-12-15 21:20:57,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:57,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148826208] [2023-12-15 21:20:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:57,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:57,803 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:57,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525347181] [2023-12-15 21:20:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:57,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:57,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:57,805 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 21:20:57,808 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 21:20:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:58,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:20:58,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:20:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-15 21:20:58,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:20:58,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:20:58,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148826208] [2023-12-15 21:20:58,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:20:58,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525347181] [2023-12-15 21:20:58,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525347181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:20:58,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:20:58,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:20:58,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743576919] [2023-12-15 21:20:58,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:20:58,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:20:58,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:20:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:20:58,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:20:58,835 INFO L87 Difference]: Start difference. First operand 867 states and 1430 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:20:59,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:20:59,227 INFO L93 Difference]: Finished difference Result 2103 states and 3459 transitions. [2023-12-15 21:20:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:20:59,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 404 [2023-12-15 21:20:59,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:20:59,233 INFO L225 Difference]: With dead ends: 2103 [2023-12-15 21:20:59,233 INFO L226 Difference]: Without dead ends: 1237 [2023-12-15 21:20:59,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 400 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 21:20:59,235 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 461 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:20:59,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1271 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:20:59,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2023-12-15 21:20:59,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 970. [2023-12-15 21:20:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 714 states have (on average 1.5294117647058822) internal successors, (1092), 716 states have internal predecessors, (1092), 249 states have call successors, (249), 6 states have call predecessors, (249), 6 states have return successors, (249), 247 states have call predecessors, (249), 249 states have call successors, (249) [2023-12-15 21:20:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1590 transitions. [2023-12-15 21:20:59,347 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1590 transitions. Word has length 404 [2023-12-15 21:20:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:20:59,347 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1590 transitions. [2023-12-15 21:20:59,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:20:59,347 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1590 transitions. [2023-12-15 21:20:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-12-15 21:20:59,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:20:59,368 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:59,378 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 21:20:59,569 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 21:20:59,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:20:59,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:20:59,570 INFO L85 PathProgramCache]: Analyzing trace with hash -323321653, now seen corresponding path program 1 times [2023-12-15 21:20:59,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:20:59,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002047968] [2023-12-15 21:20:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:59,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:20:59,642 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:20:59,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654030697] [2023-12-15 21:20:59,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:20:59,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:20:59,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:20:59,657 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 21:20:59,699 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 21:20:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:20:59,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:20:59,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-15 21:21:00,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:00,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:00,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002047968] [2023-12-15 21:21:00,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:00,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654030697] [2023-12-15 21:21:00,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654030697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:00,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:00,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:21:00,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627564033] [2023-12-15 21:21:00,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:00,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:21:00,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:00,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:21:00,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:21:00,264 INFO L87 Difference]: Start difference. First operand 970 states and 1590 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:21:00,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:00,532 INFO L93 Difference]: Finished difference Result 3556 states and 5853 transitions. [2023-12-15 21:21:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:21:00,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 405 [2023-12-15 21:21:00,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:00,544 INFO L225 Difference]: With dead ends: 3556 [2023-12-15 21:21:00,544 INFO L226 Difference]: Without dead ends: 2690 [2023-12-15 21:21:00,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 402 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 21:21:00,550 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 689 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:00,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 1138 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:21:00,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2023-12-15 21:21:00,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2654. [2023-12-15 21:21:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 2006 states have (on average 1.5239282153539382) internal successors, (3057), 2012 states have internal predecessors, (3057), 633 states have call successors, (633), 14 states have call predecessors, (633), 14 states have return successors, (633), 627 states have call predecessors, (633), 633 states have call successors, (633) [2023-12-15 21:21:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 4323 transitions. [2023-12-15 21:21:00,688 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 4323 transitions. Word has length 405 [2023-12-15 21:21:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:00,689 INFO L495 AbstractCegarLoop]: Abstraction has 2654 states and 4323 transitions. [2023-12-15 21:21:00,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:21:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 4323 transitions. [2023-12-15 21:21:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-12-15 21:21:00,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:00,696 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:00,720 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 21:21:00,903 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 21:21:00,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:00,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:00,904 INFO L85 PathProgramCache]: Analyzing trace with hash 781671753, now seen corresponding path program 1 times [2023-12-15 21:21:00,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:00,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967937231] [2023-12-15 21:21:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:00,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:00,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:00,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343987742] [2023-12-15 21:21:00,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:00,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:00,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:00,960 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 21:21:00,962 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 21:21:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:01,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:21:01,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-15 21:21:01,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:01,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:01,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967937231] [2023-12-15 21:21:01,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:01,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343987742] [2023-12-15 21:21:01,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343987742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:01,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:01,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:21:01,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553737208] [2023-12-15 21:21:01,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:01,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:21:01,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:01,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:21:01,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:21:01,983 INFO L87 Difference]: Start difference. First operand 2654 states and 4323 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:21:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:02,119 INFO L93 Difference]: Finished difference Result 5984 states and 9768 transitions. [2023-12-15 21:21:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:21:02,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 405 [2023-12-15 21:21:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:02,131 INFO L225 Difference]: With dead ends: 5984 [2023-12-15 21:21:02,132 INFO L226 Difference]: Without dead ends: 3434 [2023-12-15 21:21:02,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 403 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 21:21:02,140 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 192 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:02,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 861 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:21:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2023-12-15 21:21:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3400. [2023-12-15 21:21:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 2556 states have (on average 1.5187793427230047) internal successors, (3882), 2564 states have internal predecessors, (3882), 825 states have call successors, (825), 18 states have call predecessors, (825), 18 states have return successors, (825), 817 states have call predecessors, (825), 825 states have call successors, (825) [2023-12-15 21:21:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 5532 transitions. [2023-12-15 21:21:02,342 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 5532 transitions. Word has length 405 [2023-12-15 21:21:02,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:02,343 INFO L495 AbstractCegarLoop]: Abstraction has 3400 states and 5532 transitions. [2023-12-15 21:21:02,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:21:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 5532 transitions. [2023-12-15 21:21:02,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-12-15 21:21:02,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:02,347 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:02,353 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 21:21:02,553 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 21:21:02,554 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:02,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:02,554 INFO L85 PathProgramCache]: Analyzing trace with hash 663559709, now seen corresponding path program 1 times [2023-12-15 21:21:02,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:02,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258384383] [2023-12-15 21:21:02,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:02,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:02,586 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:02,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896583646] [2023-12-15 21:21:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:02,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:02,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:02,587 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 21:21:02,613 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 21:21:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:02,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:21:02,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-15 21:21:02,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:02,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:02,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258384383] [2023-12-15 21:21:02,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:02,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896583646] [2023-12-15 21:21:02,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896583646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:02,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:02,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:21:02,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383569575] [2023-12-15 21:21:02,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:02,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:21:02,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:02,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:21:02,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:21:02,889 INFO L87 Difference]: Start difference. First operand 3400 states and 5532 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:21:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:03,122 INFO L93 Difference]: Finished difference Result 9382 states and 15284 transitions. [2023-12-15 21:21:03,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:21:03,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 406 [2023-12-15 21:21:03,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:03,143 INFO L225 Difference]: With dead ends: 9382 [2023-12-15 21:21:03,143 INFO L226 Difference]: Without dead ends: 6086 [2023-12-15 21:21:03,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 403 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 21:21:03,150 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 332 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:03,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1652 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:21:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2023-12-15 21:21:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 3824. [2023-12-15 21:21:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 2980 states have (on average 1.5369127516778522) internal successors, (4580), 2988 states have internal predecessors, (4580), 825 states have call successors, (825), 18 states have call predecessors, (825), 18 states have return successors, (825), 817 states have call predecessors, (825), 825 states have call successors, (825) [2023-12-15 21:21:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 6230 transitions. [2023-12-15 21:21:03,357 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 6230 transitions. Word has length 406 [2023-12-15 21:21:03,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:03,357 INFO L495 AbstractCegarLoop]: Abstraction has 3824 states and 6230 transitions. [2023-12-15 21:21:03,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:21:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 6230 transitions. [2023-12-15 21:21:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-12-15 21:21:03,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:03,361 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:03,369 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 21:21:03,568 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 21:21:03,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:03,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:03,570 INFO L85 PathProgramCache]: Analyzing trace with hash -145786917, now seen corresponding path program 1 times [2023-12-15 21:21:03,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:03,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324977678] [2023-12-15 21:21:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:03,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:03,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:03,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913577111] [2023-12-15 21:21:03,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:03,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:03,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:03,616 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 21:21:03,617 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 21:21:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:03,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:21:03,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:04,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-15 21:21:04,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:04,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:04,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324977678] [2023-12-15 21:21:04,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:04,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913577111] [2023-12-15 21:21:04,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913577111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:04,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:04,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:21:04,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976934604] [2023-12-15 21:21:04,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:04,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:21:04,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:04,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:21:04,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:21:04,313 INFO L87 Difference]: Start difference. First operand 3824 states and 6230 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:21:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:05,116 INFO L93 Difference]: Finished difference Result 13482 states and 21900 transitions. [2023-12-15 21:21:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:21:05,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 406 [2023-12-15 21:21:05,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:05,153 INFO L225 Difference]: With dead ends: 13482 [2023-12-15 21:21:05,153 INFO L226 Difference]: Without dead ends: 9762 [2023-12-15 21:21:05,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:21:05,167 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 2047 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:05,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 1992 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:21:05,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9762 states. [2023-12-15 21:21:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9762 to 5906. [2023-12-15 21:21:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5906 states, 4598 states have (on average 1.528490648107873) internal successors, (7028), 4606 states have internal predecessors, (7028), 1281 states have call successors, (1281), 26 states have call predecessors, (1281), 26 states have return successors, (1281), 1273 states have call predecessors, (1281), 1281 states have call successors, (1281) [2023-12-15 21:21:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5906 states to 5906 states and 9590 transitions. [2023-12-15 21:21:05,524 INFO L78 Accepts]: Start accepts. Automaton has 5906 states and 9590 transitions. Word has length 406 [2023-12-15 21:21:05,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:05,524 INFO L495 AbstractCegarLoop]: Abstraction has 5906 states and 9590 transitions. [2023-12-15 21:21:05,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:21:05,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5906 states and 9590 transitions. [2023-12-15 21:21:05,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-12-15 21:21:05,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:05,530 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:05,537 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 21:21:05,737 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 21:21:05,738 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:05,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:05,739 INFO L85 PathProgramCache]: Analyzing trace with hash 478952913, now seen corresponding path program 1 times [2023-12-15 21:21:05,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:05,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189239272] [2023-12-15 21:21:05,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:05,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:05,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:05,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197552772] [2023-12-15 21:21:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:05,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:05,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:05,813 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 21:21:05,828 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 21:21:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:06,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:21:06,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2192 proven. 132 refuted. 0 times theorem prover too weak. 4060 trivial. 0 not checked. [2023-12-15 21:21:06,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-12-15 21:21:07,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:07,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189239272] [2023-12-15 21:21:07,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:07,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197552772] [2023-12-15 21:21:07,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197552772] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:07,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:07,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2023-12-15 21:21:07,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168687807] [2023-12-15 21:21:07,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:07,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:21:07,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:07,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:21:07,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:21:07,089 INFO L87 Difference]: Start difference. First operand 5906 states and 9590 transitions. Second operand has 9 states, 9 states have (on average 25.555555555555557) internal successors, (230), 9 states have internal predecessors, (230), 3 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 3 states have call predecessors, (114), 3 states have call successors, (114) [2023-12-15 21:21:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:08,230 INFO L93 Difference]: Finished difference Result 21226 states and 34314 transitions. [2023-12-15 21:21:08,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:21:08,240 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.555555555555557) internal successors, (230), 9 states have internal predecessors, (230), 3 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 3 states have call predecessors, (114), 3 states have call successors, (114) Word has length 406 [2023-12-15 21:21:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:08,281 INFO L225 Difference]: With dead ends: 21226 [2023-12-15 21:21:08,281 INFO L226 Difference]: Without dead ends: 15424 [2023-12-15 21:21:08,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 802 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:21:08,297 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 684 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:08,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1570 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:21:08,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15424 states. [2023-12-15 21:21:09,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15424 to 11806. [2023-12-15 21:21:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11806 states, 9225 states have (on average 1.521409214092141) internal successors, (14035), 9241 states have internal predecessors, (14035), 2505 states have call successors, (2505), 75 states have call predecessors, (2505), 75 states have return successors, (2505), 2489 states have call predecessors, (2505), 2505 states have call successors, (2505) [2023-12-15 21:21:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11806 states to 11806 states and 19045 transitions. [2023-12-15 21:21:09,274 INFO L78 Accepts]: Start accepts. Automaton has 11806 states and 19045 transitions. Word has length 406 [2023-12-15 21:21:09,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:09,275 INFO L495 AbstractCegarLoop]: Abstraction has 11806 states and 19045 transitions. [2023-12-15 21:21:09,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.555555555555557) internal successors, (230), 9 states have internal predecessors, (230), 3 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 3 states have call predecessors, (114), 3 states have call successors, (114) [2023-12-15 21:21:09,275 INFO L276 IsEmpty]: Start isEmpty. Operand 11806 states and 19045 transitions. [2023-12-15 21:21:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-12-15 21:21:09,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:09,282 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:09,289 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 21:21:09,488 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 21:21:09,488 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:09,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:09,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1915387089, now seen corresponding path program 1 times [2023-12-15 21:21:09,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:09,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167274420] [2023-12-15 21:21:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:09,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:09,537 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:09,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953347793] [2023-12-15 21:21:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:09,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:09,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:09,560 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 21:21:09,591 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 21:21:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:09,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:21:09,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3572 proven. 234 refuted. 0 times theorem prover too weak. 2578 trivial. 0 not checked. [2023-12-15 21:21:10,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 96 proven. 237 refuted. 0 times theorem prover too weak. 6051 trivial. 0 not checked. [2023-12-15 21:21:11,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:11,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167274420] [2023-12-15 21:21:11,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:11,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953347793] [2023-12-15 21:21:11,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953347793] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:11,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:11,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-15 21:21:11,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743323881] [2023-12-15 21:21:11,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:11,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 21:21:11,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:11,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 21:21:11,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:21:11,022 INFO L87 Difference]: Start difference. First operand 11806 states and 19045 transitions. Second operand has 16 states, 16 states have (on average 14.4375) internal successors, (231), 16 states have internal predecessors, (231), 5 states have call successors, (103), 3 states have call predecessors, (103), 7 states have return successors, (104), 5 states have call predecessors, (104), 5 states have call successors, (104) [2023-12-15 21:21:12,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:12,077 INFO L93 Difference]: Finished difference Result 23950 states and 38226 transitions. [2023-12-15 21:21:12,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 21:21:12,078 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.4375) internal successors, (231), 16 states have internal predecessors, (231), 5 states have call successors, (103), 3 states have call predecessors, (103), 7 states have return successors, (104), 5 states have call predecessors, (104), 5 states have call successors, (104) Word has length 406 [2023-12-15 21:21:12,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:12,106 INFO L225 Difference]: With dead ends: 23950 [2023-12-15 21:21:12,106 INFO L226 Difference]: Without dead ends: 12252 [2023-12-15 21:21:12,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2023-12-15 21:21:12,127 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 571 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:12,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1240 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:21:12,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12252 states. [2023-12-15 21:21:12,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12252 to 12054. [2023-12-15 21:21:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12054 states, 9375 states have (on average 1.4925866666666667) internal successors, (13993), 9391 states have internal predecessors, (13993), 2505 states have call successors, (2505), 173 states have call predecessors, (2505), 173 states have return successors, (2505), 2489 states have call predecessors, (2505), 2505 states have call successors, (2505) [2023-12-15 21:21:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12054 states to 12054 states and 19003 transitions. [2023-12-15 21:21:13,131 INFO L78 Accepts]: Start accepts. Automaton has 12054 states and 19003 transitions. Word has length 406 [2023-12-15 21:21:13,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:13,131 INFO L495 AbstractCegarLoop]: Abstraction has 12054 states and 19003 transitions. [2023-12-15 21:21:13,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.4375) internal successors, (231), 16 states have internal predecessors, (231), 5 states have call successors, (103), 3 states have call predecessors, (103), 7 states have return successors, (104), 5 states have call predecessors, (104), 5 states have call successors, (104) [2023-12-15 21:21:13,131 INFO L276 IsEmpty]: Start isEmpty. Operand 12054 states and 19003 transitions. [2023-12-15 21:21:13,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-15 21:21:13,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:13,138 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:13,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-15 21:21:13,363 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 21:21:13,364 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:13,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:13,364 INFO L85 PathProgramCache]: Analyzing trace with hash -46430353, now seen corresponding path program 1 times [2023-12-15 21:21:13,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:13,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195359803] [2023-12-15 21:21:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:13,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:13,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821685037] [2023-12-15 21:21:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:13,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:13,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:13,404 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 21:21:13,429 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 21:21:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:13,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:21:13,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2942 proven. 57 refuted. 0 times theorem prover too weak. 3385 trivial. 0 not checked. [2023-12-15 21:21:13,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 111 proven. 57 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-12-15 21:21:14,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:14,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195359803] [2023-12-15 21:21:14,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:14,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821685037] [2023-12-15 21:21:14,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821685037] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:14,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:14,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-15 21:21:14,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711921403] [2023-12-15 21:21:14,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:14,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:21:14,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:14,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:21:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:21:14,128 INFO L87 Difference]: Start difference. First operand 12054 states and 19003 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-15 21:21:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:15,819 INFO L93 Difference]: Finished difference Result 32412 states and 50318 transitions. [2023-12-15 21:21:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 21:21:15,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 407 [2023-12-15 21:21:15,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:15,877 INFO L225 Difference]: With dead ends: 32412 [2023-12-15 21:21:15,877 INFO L226 Difference]: Without dead ends: 20474 [2023-12-15 21:21:15,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 805 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:21:15,903 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 884 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:15,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1488 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:21:15,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20474 states. [2023-12-15 21:21:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20474 to 12254. [2023-12-15 21:21:16,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12254 states, 9526 states have (on average 1.476380432500525) internal successors, (14064), 9542 states have internal predecessors, (14064), 2505 states have call successors, (2505), 222 states have call predecessors, (2505), 222 states have return successors, (2505), 2489 states have call predecessors, (2505), 2505 states have call successors, (2505) [2023-12-15 21:21:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12254 states to 12254 states and 19074 transitions. [2023-12-15 21:21:16,887 INFO L78 Accepts]: Start accepts. Automaton has 12254 states and 19074 transitions. Word has length 407 [2023-12-15 21:21:16,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:16,887 INFO L495 AbstractCegarLoop]: Abstraction has 12254 states and 19074 transitions. [2023-12-15 21:21:16,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2023-12-15 21:21:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 12254 states and 19074 transitions. [2023-12-15 21:21:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-15 21:21:16,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:16,895 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:16,918 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 21:21:17,102 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 21:21:17,103 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:17,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:17,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1641276915, now seen corresponding path program 1 times [2023-12-15 21:21:17,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:17,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247544097] [2023-12-15 21:21:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:17,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:17,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:17,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409987334] [2023-12-15 21:21:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:17,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:17,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:17,154 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 21:21:17,178 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 21:21:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:17,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:21:17,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3158 proven. 69 refuted. 0 times theorem prover too weak. 3157 trivial. 0 not checked. [2023-12-15 21:21:18,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 99 proven. 69 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-12-15 21:21:18,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:18,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247544097] [2023-12-15 21:21:18,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:18,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409987334] [2023-12-15 21:21:18,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409987334] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:18,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:18,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-15 21:21:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933886624] [2023-12-15 21:21:18,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:18,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-15 21:21:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-15 21:21:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:21:18,727 INFO L87 Difference]: Start difference. First operand 12254 states and 19074 transitions. Second operand has 17 states, 17 states have (on average 14.117647058823529) internal successors, (240), 17 states have internal predecessors, (240), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2023-12-15 21:21:29,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:29,953 INFO L93 Difference]: Finished difference Result 91634 states and 138446 transitions. [2023-12-15 21:21:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2023-12-15 21:21:29,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.117647058823529) internal successors, (240), 17 states have internal predecessors, (240), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) Word has length 407 [2023-12-15 21:21:29,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:30,159 INFO L225 Difference]: With dead ends: 91634 [2023-12-15 21:21:30,159 INFO L226 Difference]: Without dead ends: 79500 [2023-12-15 21:21:30,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 821 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7133 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3478, Invalid=13552, Unknown=0, NotChecked=0, Total=17030 [2023-12-15 21:21:30,197 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 7560 mSDsluCounter, 4243 mSDsCounter, 0 mSdLazyCounter, 3163 mSolverCounterSat, 3362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7668 SdHoareTripleChecker+Valid, 4712 SdHoareTripleChecker+Invalid, 6525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3362 IncrementalHoareTripleChecker+Valid, 3163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:30,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7668 Valid, 4712 Invalid, 6525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3362 Valid, 3163 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-15 21:21:30,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79500 states. [2023-12-15 21:21:33,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79500 to 41868. [2023-12-15 21:21:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41868 states, 32077 states have (on average 1.443994139102784) internal successors, (46319), 32209 states have internal predecessors, (46319), 8773 states have call successors, (8773), 1017 states have call predecessors, (8773), 1017 states have return successors, (8773), 8641 states have call predecessors, (8773), 8773 states have call successors, (8773) [2023-12-15 21:21:34,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41868 states to 41868 states and 63865 transitions. [2023-12-15 21:21:34,013 INFO L78 Accepts]: Start accepts. Automaton has 41868 states and 63865 transitions. Word has length 407 [2023-12-15 21:21:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:34,013 INFO L495 AbstractCegarLoop]: Abstraction has 41868 states and 63865 transitions. [2023-12-15 21:21:34,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.117647058823529) internal successors, (240), 17 states have internal predecessors, (240), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2023-12-15 21:21:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 41868 states and 63865 transitions. [2023-12-15 21:21:34,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-15 21:21:34,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:34,030 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:34,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-15 21:21:34,238 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 21:21:34,239 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:34,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:34,239 INFO L85 PathProgramCache]: Analyzing trace with hash -355857039, now seen corresponding path program 1 times [2023-12-15 21:21:34,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:34,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999168522] [2023-12-15 21:21:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:34,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:34,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721630656] [2023-12-15 21:21:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:34,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:34,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:34,299 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 21:21:34,299 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 21:21:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:34,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:21:34,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-15 21:21:35,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:21:35,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:35,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999168522] [2023-12-15 21:21:35,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:35,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721630656] [2023-12-15 21:21:35,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721630656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:21:35,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:21:35,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:21:35,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441857050] [2023-12-15 21:21:35,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:21:35,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:21:35,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:35,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:21:35,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:21:35,047 INFO L87 Difference]: Start difference. First operand 41868 states and 63865 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:21:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:21:40,414 INFO L93 Difference]: Finished difference Result 134014 states and 204494 transitions. [2023-12-15 21:21:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:21:40,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 407 [2023-12-15 21:21:40,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:21:40,621 INFO L225 Difference]: With dead ends: 134014 [2023-12-15 21:21:40,621 INFO L226 Difference]: Without dead ends: 92268 [2023-12-15 21:21:40,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 404 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 21:21:40,763 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 445 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:40,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1068 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:21:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92268 states. [2023-12-15 21:21:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92268 to 82922. [2023-12-15 21:21:47,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82922 states, 63405 states have (on average 1.4356911915464081) internal successors, (91030), 63669 states have internal predecessors, (91030), 17489 states have call successors, (17489), 2027 states have call predecessors, (17489), 2027 states have return successors, (17489), 17225 states have call predecessors, (17489), 17489 states have call successors, (17489) [2023-12-15 21:21:47,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82922 states to 82922 states and 126008 transitions. [2023-12-15 21:21:47,466 INFO L78 Accepts]: Start accepts. Automaton has 82922 states and 126008 transitions. Word has length 407 [2023-12-15 21:21:47,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:21:47,467 INFO L495 AbstractCegarLoop]: Abstraction has 82922 states and 126008 transitions. [2023-12-15 21:21:47,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:21:47,467 INFO L276 IsEmpty]: Start isEmpty. Operand 82922 states and 126008 transitions. [2023-12-15 21:21:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-15 21:21:47,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:21:47,519 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:47,538 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 21:21:47,719 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 21:21:47,720 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:21:47,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:21:47,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1891729999, now seen corresponding path program 1 times [2023-12-15 21:21:47,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:21:47,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272899088] [2023-12-15 21:21:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:47,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:21:47,754 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:21:47,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438924117] [2023-12-15 21:21:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:21:47,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:21:47,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:21:47,755 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 21:21:47,783 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 21:21:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:21:48,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-15 21:21:48,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:21:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3580 proven. 342 refuted. 0 times theorem prover too weak. 2462 trivial. 0 not checked. [2023-12-15 21:21:49,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:21:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 144 proven. 351 refuted. 0 times theorem prover too weak. 5889 trivial. 0 not checked. [2023-12-15 21:21:50,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:21:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272899088] [2023-12-15 21:21:50,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:21:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438924117] [2023-12-15 21:21:50,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438924117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:21:50,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:21:50,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-15 21:21:50,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94434124] [2023-12-15 21:21:50,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:21:50,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-15 21:21:50,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:21:50,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-15 21:21:50,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2023-12-15 21:21:50,929 INFO L87 Difference]: Start difference. First operand 82922 states and 126008 transitions. Second operand has 26 states, 25 states have (on average 8.28) internal successors, (207), 24 states have internal predecessors, (207), 8 states have call successors, (114), 5 states have call predecessors, (114), 10 states have return successors, (114), 8 states have call predecessors, (114), 8 states have call successors, (114) Received shutdown request... [2023-12-15 21:21:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 21:21:52,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 790 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=585, Invalid=1485, Unknown=0, NotChecked=0, Total=2070 [2023-12-15 21:21:52,376 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 276 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:21:52,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 564 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 21:21:52,377 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:21:52,386 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 21:21:52,402 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 21:21:52,402 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 21:21:52,578 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 21:21:52,579 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (82922states) and FLOYD_HOARE automaton (currently 22 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (198 states constructed, input type IntersectNwa). [2023-12-15 21:21:52,582 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:21:52,584 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:21:52,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:21:52 BoogieIcfgContainer [2023-12-15 21:21:52,585 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:21:52,585 INFO L158 Benchmark]: Toolchain (without parser) took 60160.08ms. Allocated memory was 182.5MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 122.7MB in the beginning and 3.5GB in the end (delta: -3.3GB). Peak memory consumption was 861.5MB. Max. memory is 8.0GB. [2023-12-15 21:21:52,585 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:21:52,586 INFO L158 Benchmark]: CACSL2BoogieTranslator took 528.09ms. Allocated memory is still 182.5MB. Free memory was 122.5MB in the beginning and 131.4MB in the end (delta: -8.8MB). Peak memory consumption was 28.4MB. Max. memory is 8.0GB. [2023-12-15 21:21:52,586 INFO L158 Benchmark]: Boogie Procedure Inliner took 112.31ms. Allocated memory is still 182.5MB. Free memory was 131.4MB in the beginning and 112.5MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-15 21:21:52,586 INFO L158 Benchmark]: Boogie Preprocessor took 169.43ms. Allocated memory is still 182.5MB. Free memory was 112.5MB in the beginning and 59.8MB in the end (delta: 52.7MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. [2023-12-15 21:21:52,586 INFO L158 Benchmark]: RCFGBuilder took 977.27ms. Allocated memory was 182.5MB in the beginning and 323.0MB in the end (delta: 140.5MB). Free memory was 59.8MB in the beginning and 192.7MB in the end (delta: -132.9MB). Peak memory consumption was 22.5MB. Max. memory is 8.0GB. [2023-12-15 21:21:52,586 INFO L158 Benchmark]: TraceAbstraction took 58357.98ms. Allocated memory was 323.0MB in the beginning and 4.4GB in the end (delta: 4.1GB). Free memory was 192.2MB in the beginning and 3.5GB in the end (delta: -3.3GB). Peak memory consumption was 789.6MB. Max. memory is 8.0GB. [2023-12-15 21:21:52,587 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 528.09ms. Allocated memory is still 182.5MB. Free memory was 122.5MB in the beginning and 131.4MB in the end (delta: -8.8MB). Peak memory consumption was 28.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 112.31ms. Allocated memory is still 182.5MB. Free memory was 131.4MB in the beginning and 112.5MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 169.43ms. Allocated memory is still 182.5MB. Free memory was 112.5MB in the beginning and 59.8MB in the end (delta: 52.7MB). Peak memory consumption was 52.4MB. Max. memory is 8.0GB. * RCFGBuilder took 977.27ms. Allocated memory was 182.5MB in the beginning and 323.0MB in the end (delta: 140.5MB). Free memory was 59.8MB in the beginning and 192.7MB in the end (delta: -132.9MB). Peak memory consumption was 22.5MB. Max. memory is 8.0GB. * TraceAbstraction took 58357.98ms. Allocated memory was 323.0MB in the beginning and 4.4GB in the end (delta: 4.1GB). Free memory was 192.2MB in the beginning and 3.5GB in the end (delta: -3.3GB). Peak memory consumption was 789.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (82922states) and FLOYD_HOARE automaton (currently 22 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (198 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.3s, OverallIterations: 15, TraceHistogramMax: 57, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 25.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15358 SdHoareTripleChecker+Valid, 7.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15135 mSDsluCounter, 20226 SdHoareTripleChecker+Invalid, 6.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13889 mSDsCounter, 4705 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7483 IncrementalHoareTripleChecker+Invalid, 12188 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4705 mSolverCounterUnsat, 6337 mSDtfsCounter, 7483 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8289 GetRequests, 8036 SyntacticMatches, 3 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7787 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82922occurred in iteration=14, InterpolantAutomatonStates: 216, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 66184 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 6486 NumberOfCodeBlocks, 6486 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8095 ConstructedInterpolants, 0 QuantifiedInterpolants, 31043 SizeOfPredicates, 44 NumberOfNonLiveVariables, 16479 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 20 InterpolantComputations, 10 PerfectInterpolantSequences, 126000/127680 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