/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_amount250_file-69.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:11:41,236 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:11:41,300 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 21:11:41,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:11:41,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:11:41,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:11:41,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:11:41,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:11:41,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:11:41,330 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:11:41,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:11:41,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:11:41,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:11:41,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:11:41,332 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:11:41,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:11:41,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:11:41,332 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:11:41,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:11:41,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:11:41,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:11:41,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:11:41,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:11:41,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:11:41,334 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:11:41,334 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:11:41,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:11:41,334 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:11:41,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:11:41,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:11:41,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:11:41,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:11:41,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:11:41,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:11:41,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:11:41,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:11:41,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:11:41,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:11:41,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:11:41,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:11:41,336 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:11:41,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:11:41,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:11:41,337 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:11:41,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:11:41,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:11:41,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:11:41,536 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:11:41,537 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:11:41,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-69.i [2023-12-15 21:11:42,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:11:42,807 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:11:42,808 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-69.i [2023-12-15 21:11:42,818 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63402de34/4a258af2d309417c8357af208a225805/FLAG181a9a9cc [2023-12-15 21:11:42,829 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63402de34/4a258af2d309417c8357af208a225805 [2023-12-15 21:11:42,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:11:42,831 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:11:42,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:11:42,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:11:42,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:11:42,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:11:42" (1/1) ... [2023-12-15 21:11:42,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a7a424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:42, skipping insertion in model container [2023-12-15 21:11:42,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:11:42" (1/1) ... [2023-12-15 21:11:42,882 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:11:43,007 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_amount250_file-69.i[916,929] [2023-12-15 21:11:43,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:11:43,133 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:11:43,141 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_amount250_file-69.i[916,929] [2023-12-15 21:11:43,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:11:43,199 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:11:43,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43 WrapperNode [2023-12-15 21:11:43,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:11:43,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:11:43,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:11:43,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:11:43,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (1/1) ... [2023-12-15 21:11:43,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (1/1) ... [2023-12-15 21:11:43,279 INFO L138 Inliner]: procedures = 26, calls = 78, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 486 [2023-12-15 21:11:43,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:11:43,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:11:43,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:11:43,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:11:43,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (1/1) ... [2023-12-15 21:11:43,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (1/1) ... [2023-12-15 21:11:43,300 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (1/1) ... [2023-12-15 21:11:43,383 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 21:11:43,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (1/1) ... [2023-12-15 21:11:43,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (1/1) ... [2023-12-15 21:11:43,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (1/1) ... [2023-12-15 21:11:43,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (1/1) ... [2023-12-15 21:11:43,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (1/1) ... [2023-12-15 21:11:43,434 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (1/1) ... [2023-12-15 21:11:43,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:11:43,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:11:43,444 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:11:43,445 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:11:43,445 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (1/1) ... [2023-12-15 21:11:43,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:11:43,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:43,497 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 21:11:43,556 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 21:11:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:11:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:11:43,576 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:11:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:11:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:11:43,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:11:43,670 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:11:43,671 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:11:44,156 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:11:44,201 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:11:44,202 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:11:44,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:11:44 BoogieIcfgContainer [2023-12-15 21:11:44,202 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:11:44,204 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:11:44,204 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:11:44,206 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:11:44,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:11:42" (1/3) ... [2023-12-15 21:11:44,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75545e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:11:44, skipping insertion in model container [2023-12-15 21:11:44,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:43" (2/3) ... [2023-12-15 21:11:44,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75545e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:11:44, skipping insertion in model container [2023-12-15 21:11:44,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:11:44" (3/3) ... [2023-12-15 21:11:44,208 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-69.i [2023-12-15 21:11:44,220 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:11:44,220 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:11:44,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:11:44,272 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;@2a12cbf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:11:44,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:11:44,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 122 states have (on average 1.5081967213114753) internal successors, (184), 123 states have internal predecessors, (184), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-15 21:11:44,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:11:44,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:44,305 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:44,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:44,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:44,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1106471672, now seen corresponding path program 1 times [2023-12-15 21:11:44,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:44,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316219306] [2023-12-15 21:11:44,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:44,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:44,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:44,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316219306] [2023-12-15 21:11:44,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:11:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533637747] [2023-12-15 21:11:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:44,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:44,603 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 21:11:44,607 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 21:11:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:44,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:11:44,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2023-12-15 21:11:44,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:44,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533637747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:44,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:44,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:11:44,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852461132] [2023-12-15 21:11:44,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:44,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:11:44,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:44,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:11:44,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:11:44,988 INFO L87 Difference]: Start difference. First operand has 190 states, 122 states have (on average 1.5081967213114753) internal successors, (184), 123 states have internal predecessors, (184), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-15 21:11:45,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:45,035 INFO L93 Difference]: Finished difference Result 377 states and 691 transitions. [2023-12-15 21:11:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:11:45,050 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) Word has length 408 [2023-12-15 21:11:45,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:45,056 INFO L225 Difference]: With dead ends: 377 [2023-12-15 21:11:45,056 INFO L226 Difference]: Without dead ends: 188 [2023-12-15 21:11:45,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 407 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 21:11:45,062 INFO L413 NwaCegarLoop]: 306 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, 306 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 21:11:45,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:45,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-15 21:11:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-12-15 21:11:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 121 states have (on average 1.4793388429752066) internal successors, (179), 121 states have internal predecessors, (179), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-15 21:11:45,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 309 transitions. [2023-12-15 21:11:45,137 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 309 transitions. Word has length 408 [2023-12-15 21:11:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:45,138 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 309 transitions. [2023-12-15 21:11:45,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-15 21:11:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 309 transitions. [2023-12-15 21:11:45,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:11:45,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:45,153 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:45,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 21:11:45,372 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 21:11:45,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:45,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:45,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1069189770, now seen corresponding path program 1 times [2023-12-15 21:11:45,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:45,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809191906] [2023-12-15 21:11:45,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:45,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:45,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:45,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365447048] [2023-12-15 21:11:45,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:45,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:45,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:45,470 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 21:11:45,471 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 21:11:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:45,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:11:45,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3784 proven. 0 refuted. 0 times theorem prover too weak. 4536 trivial. 0 not checked. [2023-12-15 21:11:46,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:46,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:46,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809191906] [2023-12-15 21:11:46,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:46,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365447048] [2023-12-15 21:11:46,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365447048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:46,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:46,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:11:46,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054695475] [2023-12-15 21:11:46,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:46,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:11:46,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:46,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:11:46,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:46,072 INFO L87 Difference]: Start difference. First operand 188 states and 309 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-15 21:11:46,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:46,137 INFO L93 Difference]: Finished difference Result 375 states and 617 transitions. [2023-12-15 21:11:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:11:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 408 [2023-12-15 21:11:46,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:46,141 INFO L225 Difference]: With dead ends: 375 [2023-12-15 21:11:46,141 INFO L226 Difference]: Without dead ends: 188 [2023-12-15 21:11:46,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 405 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 21:11:46,143 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 244 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:46,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 511 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:46,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-15 21:11:46,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-12-15 21:11:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 121 states have (on average 1.4710743801652892) internal successors, (178), 121 states have internal predecessors, (178), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-15 21:11:46,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 308 transitions. [2023-12-15 21:11:46,157 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 308 transitions. Word has length 408 [2023-12-15 21:11:46,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:46,159 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 308 transitions. [2023-12-15 21:11:46,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-15 21:11:46,159 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 308 transitions. [2023-12-15 21:11:46,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:11:46,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:46,163 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:46,180 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 21:11:46,370 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 21:11:46,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:46,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1131229384, now seen corresponding path program 1 times [2023-12-15 21:11:46,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:46,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379616493] [2023-12-15 21:11:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:46,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:46,434 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:46,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41621669] [2023-12-15 21:11:46,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:46,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:46,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:46,450 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 21:11:46,490 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 21:11:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:46,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:11:46,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:11:46,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:46,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:46,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379616493] [2023-12-15 21:11:46,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:46,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41621669] [2023-12-15 21:11:46,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41621669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:46,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:46,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:11:46,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998260981] [2023-12-15 21:11:46,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:46,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:11:46,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:46,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:11:46,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:11:46,697 INFO L87 Difference]: Start difference. First operand 188 states and 308 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:11:46,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:46,768 INFO L93 Difference]: Finished difference Result 554 states and 909 transitions. [2023-12-15 21:11:46,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:11:46,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 408 [2023-12-15 21:11:46,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:46,775 INFO L225 Difference]: With dead ends: 554 [2023-12-15 21:11:46,775 INFO L226 Difference]: Without dead ends: 367 [2023-12-15 21:11:46,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 406 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 21:11:46,778 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 285 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:46,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 787 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:46,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-12-15 21:11:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 203. [2023-12-15 21:11:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 136 states have (on average 1.5) internal successors, (204), 136 states have internal predecessors, (204), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-15 21:11:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 334 transitions. [2023-12-15 21:11:46,814 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 334 transitions. Word has length 408 [2023-12-15 21:11:46,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:46,815 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 334 transitions. [2023-12-15 21:11:46,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:11:46,815 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 334 transitions. [2023-12-15 21:11:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:11:46,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:46,817 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:46,826 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 21:11:47,024 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 21:11:47,024 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:47,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash 313580934, now seen corresponding path program 1 times [2023-12-15 21:11:47,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:47,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307407546] [2023-12-15 21:11:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:47,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:47,062 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:47,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37915158] [2023-12-15 21:11:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:47,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:47,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:47,063 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 21:11:47,100 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 21:11:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:47,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:11:47,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:11:47,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:47,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:47,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307407546] [2023-12-15 21:11:47,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:47,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37915158] [2023-12-15 21:11:47,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37915158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:47,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:47,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:11:47,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093440194] [2023-12-15 21:11:47,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:47,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:11:47,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:11:47,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:11:47,346 INFO L87 Difference]: Start difference. First operand 203 states and 334 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:11:47,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:47,404 INFO L93 Difference]: Finished difference Result 603 states and 992 transitions. [2023-12-15 21:11:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:11:47,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 408 [2023-12-15 21:11:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:47,407 INFO L225 Difference]: With dead ends: 603 [2023-12-15 21:11:47,407 INFO L226 Difference]: Without dead ends: 401 [2023-12-15 21:11:47,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 406 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 21:11:47,409 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 294 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:47,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 882 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:47,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-12-15 21:11:47,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 227. [2023-12-15 21:11:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 160 states have (on average 1.55) internal successors, (248), 160 states have internal predecessors, (248), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-15 21:11:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 378 transitions. [2023-12-15 21:11:47,431 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 378 transitions. Word has length 408 [2023-12-15 21:11:47,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:47,432 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 378 transitions. [2023-12-15 21:11:47,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:11:47,432 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 378 transitions. [2023-12-15 21:11:47,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:11:47,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:47,435 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:47,456 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 21:11:47,656 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 21:11:47,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:47,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:47,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1274766968, now seen corresponding path program 1 times [2023-12-15 21:11:47,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:47,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115434340] [2023-12-15 21:11:47,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:47,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:47,737 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:47,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840820104] [2023-12-15 21:11:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:47,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:47,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:47,744 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 21:11:47,802 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 21:11:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:47,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:11:48,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:11:48,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:48,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:48,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115434340] [2023-12-15 21:11:48,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:48,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840820104] [2023-12-15 21:11:48,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840820104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:48,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:48,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:11:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314654886] [2023-12-15 21:11:48,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:48,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:11:48,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:48,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:11:48,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:11:48,057 INFO L87 Difference]: Start difference. First operand 227 states and 378 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:11:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:48,683 INFO L93 Difference]: Finished difference Result 1465 states and 2413 transitions. [2023-12-15 21:11:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:11:48,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 408 [2023-12-15 21:11:48,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:48,689 INFO L225 Difference]: With dead ends: 1465 [2023-12-15 21:11:48,689 INFO L226 Difference]: Without dead ends: 1239 [2023-12-15 21:11:48,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:11:48,690 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1172 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:48,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 2144 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:11:48,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2023-12-15 21:11:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 571. [2023-12-15 21:11:48,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 470 states have (on average 1.6595744680851063) internal successors, (780), 471 states have internal predecessors, (780), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-15 21:11:48,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 976 transitions. [2023-12-15 21:11:48,772 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 976 transitions. Word has length 408 [2023-12-15 21:11:48,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:48,772 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 976 transitions. [2023-12-15 21:11:48,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:11:48,772 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 976 transitions. [2023-12-15 21:11:48,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:11:48,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:48,775 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:48,797 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 21:11:48,997 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 21:11:48,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:48,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:48,998 INFO L85 PathProgramCache]: Analyzing trace with hash -196974136, now seen corresponding path program 1 times [2023-12-15 21:11:48,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:48,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724408877] [2023-12-15 21:11:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:48,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:49,028 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:49,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899031822] [2023-12-15 21:11:49,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:49,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:49,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:49,046 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 21:11:49,047 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 21:11:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:49,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:11:49,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:11:49,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:49,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724408877] [2023-12-15 21:11:49,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899031822] [2023-12-15 21:11:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899031822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:49,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:49,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:11:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482878369] [2023-12-15 21:11:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:49,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:11:49,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:11:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:49,285 INFO L87 Difference]: Start difference. First operand 571 states and 976 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:11:49,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:49,358 INFO L93 Difference]: Finished difference Result 1650 states and 2825 transitions. [2023-12-15 21:11:49,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:11:49,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 408 [2023-12-15 21:11:49,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:49,364 INFO L225 Difference]: With dead ends: 1650 [2023-12-15 21:11:49,364 INFO L226 Difference]: Without dead ends: 1080 [2023-12-15 21:11:49,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 405 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 21:11:49,366 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 216 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:49,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1194 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2023-12-15 21:11:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1077. [2023-12-15 21:11:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 900 states have (on average 1.6677777777777778) internal successors, (1501), 903 states have internal predecessors, (1501), 172 states have call successors, (172), 4 states have call predecessors, (172), 4 states have return successors, (172), 169 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-15 21:11:49,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1845 transitions. [2023-12-15 21:11:49,411 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1845 transitions. Word has length 408 [2023-12-15 21:11:49,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:49,412 INFO L495 AbstractCegarLoop]: Abstraction has 1077 states and 1845 transitions. [2023-12-15 21:11:49,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:11:49,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1845 transitions. [2023-12-15 21:11:49,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:11:49,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:49,415 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:49,425 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 21:11:49,622 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 21:11:49,622 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:49,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:49,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1040979638, now seen corresponding path program 1 times [2023-12-15 21:11:49,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:49,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753292889] [2023-12-15 21:11:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:49,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:49,652 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:49,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649432086] [2023-12-15 21:11:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:49,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:49,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:49,654 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 21:11:49,678 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 21:11:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:49,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:11:49,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4222 proven. 93 refuted. 0 times theorem prover too weak. 4005 trivial. 0 not checked. [2023-12-15 21:11:50,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 99 proven. 93 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:11:50,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:50,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753292889] [2023-12-15 21:11:50,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:50,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649432086] [2023-12-15 21:11:50,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649432086] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:50,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:50,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:11:50,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468840292] [2023-12-15 21:11:50,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:50,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:11:50,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:50,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:11:50,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:11:50,316 INFO L87 Difference]: Start difference. First operand 1077 states and 1845 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-15 21:11:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:50,756 INFO L93 Difference]: Finished difference Result 1785 states and 3021 transitions. [2023-12-15 21:11:50,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:11:50,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 408 [2023-12-15 21:11:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:50,759 INFO L225 Difference]: With dead ends: 1785 [2023-12-15 21:11:50,759 INFO L226 Difference]: Without dead ends: 709 [2023-12-15 21:11:50,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 808 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:11:50,761 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 463 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:50,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 642 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:11:50,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2023-12-15 21:11:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 700. [2023-12-15 21:11:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 554 states have (on average 1.5992779783393503) internal successors, (886), 556 states have internal predecessors, (886), 139 states have call successors, (139), 6 states have call predecessors, (139), 6 states have return successors, (139), 137 states have call predecessors, (139), 139 states have call successors, (139) [2023-12-15 21:11:50,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1164 transitions. [2023-12-15 21:11:50,830 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1164 transitions. Word has length 408 [2023-12-15 21:11:50,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:50,830 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1164 transitions. [2023-12-15 21:11:50,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-12-15 21:11:50,831 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1164 transitions. [2023-12-15 21:11:50,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-15 21:11:50,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:50,846 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:50,870 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 21:11:51,046 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 21:11:51,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:51,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:51,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1742579512, now seen corresponding path program 1 times [2023-12-15 21:11:51,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:51,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469395402] [2023-12-15 21:11:51,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:51,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:51,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:51,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36190211] [2023-12-15 21:11:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:51,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:51,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:51,103 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 21:11:51,117 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 21:11:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:51,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:11:51,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:11:51,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:51,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:51,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469395402] [2023-12-15 21:11:51,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:51,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36190211] [2023-12-15 21:11:51,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36190211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:51,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:51,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:11:51,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108964465] [2023-12-15 21:11:51,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:51,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:11:51,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:11:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:51,343 INFO L87 Difference]: Start difference. First operand 700 states and 1164 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:11:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:51,641 INFO L93 Difference]: Finished difference Result 1219 states and 2012 transitions. [2023-12-15 21:11:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:11:51,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 408 [2023-12-15 21:11:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:51,644 INFO L225 Difference]: With dead ends: 1219 [2023-12-15 21:11:51,644 INFO L226 Difference]: Without dead ends: 573 [2023-12-15 21:11:51,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 406 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 21:11:51,646 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 425 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:51,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 446 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:11:51,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-12-15 21:11:51,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 554. [2023-12-15 21:11:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 408 states have (on average 1.5392156862745099) internal successors, (628), 410 states have internal predecessors, (628), 139 states have call successors, (139), 6 states have call predecessors, (139), 6 states have return successors, (139), 137 states have call predecessors, (139), 139 states have call successors, (139) [2023-12-15 21:11:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 906 transitions. [2023-12-15 21:11:51,697 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 906 transitions. Word has length 408 [2023-12-15 21:11:51,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:51,697 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 906 transitions. [2023-12-15 21:11:51,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:11:51,698 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 906 transitions. [2023-12-15 21:11:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-12-15 21:11:51,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:51,700 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:51,718 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 21:11:51,906 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 21:11:51,906 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:51,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:51,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1910920789, now seen corresponding path program 1 times [2023-12-15 21:11:51,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:51,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742426133] [2023-12-15 21:11:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:51,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:51,941 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:51,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158965679] [2023-12-15 21:11:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:51,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:51,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:51,945 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 21:11:51,968 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 21:11:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:52,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:11:52,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4194 proven. 87 refuted. 0 times theorem prover too weak. 4039 trivial. 0 not checked. [2023-12-15 21:11:52,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 105 proven. 87 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:11:52,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:52,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742426133] [2023-12-15 21:11:52,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:52,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158965679] [2023-12-15 21:11:52,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158965679] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:52,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:52,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:11:52,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582097172] [2023-12-15 21:11:52,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:52,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:11:52,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:11:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:11:52,593 INFO L87 Difference]: Start difference. First operand 554 states and 906 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-15 21:11:53,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:53,056 INFO L93 Difference]: Finished difference Result 1078 states and 1748 transitions. [2023-12-15 21:11:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:11:53,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 409 [2023-12-15 21:11:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:53,059 INFO L225 Difference]: With dead ends: 1078 [2023-12-15 21:11:53,059 INFO L226 Difference]: Without dead ends: 578 [2023-12-15 21:11:53,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 820 GetRequests, 810 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:11:53,061 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 158 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:53,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 762 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:11:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-12-15 21:11:53,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 569. [2023-12-15 21:11:53,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 418 states have (on average 1.5215311004784688) internal successors, (636), 420 states have internal predecessors, (636), 141 states have call successors, (141), 9 states have call predecessors, (141), 9 states have return successors, (141), 139 states have call predecessors, (141), 141 states have call successors, (141) [2023-12-15 21:11:53,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 918 transitions. [2023-12-15 21:11:53,094 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 918 transitions. Word has length 409 [2023-12-15 21:11:53,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:53,094 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 918 transitions. [2023-12-15 21:11:53,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-15 21:11:53,095 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 918 transitions. [2023-12-15 21:11:53,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-12-15 21:11:53,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:53,097 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:53,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 21:11:53,303 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 21:11:53,304 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:53,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:53,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1192617547, now seen corresponding path program 1 times [2023-12-15 21:11:53,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:53,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583454095] [2023-12-15 21:11:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:53,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:53,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:53,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357971434] [2023-12-15 21:11:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:53,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:53,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:53,354 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 21:11:53,361 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 21:11:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:53,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:11:53,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:53,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4134 proven. 81 refuted. 0 times theorem prover too weak. 4105 trivial. 0 not checked. [2023-12-15 21:11:53,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 111 proven. 81 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:11:53,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:53,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583454095] [2023-12-15 21:11:53,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:53,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357971434] [2023-12-15 21:11:53,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357971434] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:53,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:53,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:11:53,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538899426] [2023-12-15 21:11:53,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:53,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:11:53,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:53,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:11:53,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:11:53,972 INFO L87 Difference]: Start difference. First operand 569 states and 918 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (93), 2 states have call predecessors, (93), 2 states have call successors, (93) [2023-12-15 21:11:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:54,442 INFO L93 Difference]: Finished difference Result 1101 states and 1764 transitions. [2023-12-15 21:11:54,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:11:54,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (93), 2 states have call predecessors, (93), 2 states have call successors, (93) Word has length 410 [2023-12-15 21:11:54,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:54,445 INFO L225 Difference]: With dead ends: 1101 [2023-12-15 21:11:54,445 INFO L226 Difference]: Without dead ends: 593 [2023-12-15 21:11:54,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 812 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:11:54,447 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 193 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:54,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 746 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:11:54,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-12-15 21:11:54,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 584. [2023-12-15 21:11:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 428 states have (on average 1.5070093457943925) internal successors, (645), 430 states have internal predecessors, (645), 143 states have call successors, (143), 12 states have call predecessors, (143), 12 states have return successors, (143), 141 states have call predecessors, (143), 143 states have call successors, (143) [2023-12-15 21:11:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 931 transitions. [2023-12-15 21:11:54,479 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 931 transitions. Word has length 410 [2023-12-15 21:11:54,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:54,479 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 931 transitions. [2023-12-15 21:11:54,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (93), 2 states have call predecessors, (93), 2 states have call successors, (93) [2023-12-15 21:11:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 931 transitions. [2023-12-15 21:11:54,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-12-15 21:11:54,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:54,482 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:54,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-15 21:11:54,688 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 21:11:54,688 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:54,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:54,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1577808878, now seen corresponding path program 1 times [2023-12-15 21:11:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:54,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180843213] [2023-12-15 21:11:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:54,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:54,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:54,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531063030] [2023-12-15 21:11:54,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:54,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:54,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:54,723 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 21:11:54,751 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 21:11:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:54,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:11:54,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:55,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3836 proven. 192 refuted. 0 times theorem prover too weak. 4292 trivial. 0 not checked. [2023-12-15 21:11:55,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:11:55,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:55,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180843213] [2023-12-15 21:11:55,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:55,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531063030] [2023-12-15 21:11:55,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531063030] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:55,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:55,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 21:11:55,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899874625] [2023-12-15 21:11:55,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:55,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:11:55,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:55,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:11:55,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:11:55,829 INFO L87 Difference]: Start difference. First operand 584 states and 931 transitions. Second operand has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 5 states have call successors, (129), 3 states have call predecessors, (129), 5 states have return successors, (130), 4 states have call predecessors, (130), 5 states have call successors, (130) [2023-12-15 21:11:56,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:56,188 INFO L93 Difference]: Finished difference Result 1132 states and 1785 transitions. [2023-12-15 21:11:56,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:11:56,189 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 5 states have call successors, (129), 3 states have call predecessors, (129), 5 states have return successors, (130), 4 states have call predecessors, (130), 5 states have call successors, (130) Word has length 411 [2023-12-15 21:11:56,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:56,193 INFO L225 Difference]: With dead ends: 1132 [2023-12-15 21:11:56,194 INFO L226 Difference]: Without dead ends: 616 [2023-12-15 21:11:56,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:11:56,195 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 197 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:56,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 558 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:11:56,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2023-12-15 21:11:56,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 608. [2023-12-15 21:11:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 446 states have (on average 1.468609865470852) internal successors, (655), 448 states have internal predecessors, (655), 143 states have call successors, (143), 18 states have call predecessors, (143), 18 states have return successors, (143), 141 states have call predecessors, (143), 143 states have call successors, (143) [2023-12-15 21:11:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 941 transitions. [2023-12-15 21:11:56,232 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 941 transitions. Word has length 411 [2023-12-15 21:11:56,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:56,232 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 941 transitions. [2023-12-15 21:11:56,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 5 states have call successors, (129), 3 states have call predecessors, (129), 5 states have return successors, (130), 4 states have call predecessors, (130), 5 states have call successors, (130) [2023-12-15 21:11:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 941 transitions. [2023-12-15 21:11:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-12-15 21:11:56,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:56,235 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:56,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:56,441 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 21:11:56,441 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:56,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:56,442 INFO L85 PathProgramCache]: Analyzing trace with hash 633794752, now seen corresponding path program 1 times [2023-12-15 21:11:56,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:56,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840341178] [2023-12-15 21:11:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:56,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:56,493 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:56,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926236320] [2023-12-15 21:11:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:56,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:56,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:56,512 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 21:11:56,514 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 21:11:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:56,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:11:56,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3844 proven. 66 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2023-12-15 21:11:56,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 126 proven. 66 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:11:57,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:57,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840341178] [2023-12-15 21:11:57,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:57,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926236320] [2023-12-15 21:11:57,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926236320] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:57,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:57,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:11:57,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328745588] [2023-12-15 21:11:57,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:57,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:11:57,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:57,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:11:57,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:11:57,137 INFO L87 Difference]: Start difference. First operand 608 states and 941 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2023-12-15 21:11:57,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:57,408 INFO L93 Difference]: Finished difference Result 916 states and 1416 transitions. [2023-12-15 21:11:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:11:57,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) Word has length 412 [2023-12-15 21:11:57,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:57,411 INFO L225 Difference]: With dead ends: 916 [2023-12-15 21:11:57,411 INFO L226 Difference]: Without dead ends: 384 [2023-12-15 21:11:57,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 816 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:11:57,412 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 191 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:57,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 551 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:11:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-15 21:11:57,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 376. [2023-12-15 21:11:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 261 states have (on average 1.417624521072797) internal successors, (370), 262 states have internal predecessors, (370), 102 states have call successors, (102), 12 states have call predecessors, (102), 12 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-15 21:11:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 574 transitions. [2023-12-15 21:11:57,436 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 574 transitions. Word has length 412 [2023-12-15 21:11:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:57,437 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 574 transitions. [2023-12-15 21:11:57,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2023-12-15 21:11:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 574 transitions. [2023-12-15 21:11:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-12-15 21:11:57,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:57,439 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:57,458 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 21:11:57,645 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 21:11:57,646 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:57,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:57,646 INFO L85 PathProgramCache]: Analyzing trace with hash -395564546, now seen corresponding path program 1 times [2023-12-15 21:11:57,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:57,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910828969] [2023-12-15 21:11:57,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:57,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:57,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:57,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672996100] [2023-12-15 21:11:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:57,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:57,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:57,703 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 21:11:57,727 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 21:11:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:57,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 21:11:57,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:11:58,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:58,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910828969] [2023-12-15 21:11:58,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672996100] [2023-12-15 21:11:58,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672996100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:58,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:58,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 21:11:58,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148361188] [2023-12-15 21:11:58,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:58,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:11:58,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:58,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:11:58,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:11:58,120 INFO L87 Difference]: Start difference. First operand 376 states and 574 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:11:59,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:59,017 INFO L93 Difference]: Finished difference Result 1130 states and 1735 transitions. [2023-12-15 21:11:59,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:11:59,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 412 [2023-12-15 21:11:59,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:59,020 INFO L225 Difference]: With dead ends: 1130 [2023-12-15 21:11:59,020 INFO L226 Difference]: Without dead ends: 830 [2023-12-15 21:11:59,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:11:59,022 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 905 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:59,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1412 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 21:11:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-15 21:11:59,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 537. [2023-12-15 21:11:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 375 states have (on average 1.3733333333333333) internal successors, (515), 377 states have internal predecessors, (515), 140 states have call successors, (140), 21 states have call predecessors, (140), 21 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-15 21:11:59,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 795 transitions. [2023-12-15 21:11:59,066 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 795 transitions. Word has length 412 [2023-12-15 21:11:59,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:59,066 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 795 transitions. [2023-12-15 21:11:59,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:11:59,066 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 795 transitions. [2023-12-15 21:11:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-15 21:11:59,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:59,069 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:59,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:11:59,276 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 21:11:59,276 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:59,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:59,276 INFO L85 PathProgramCache]: Analyzing trace with hash 38869757, now seen corresponding path program 1 times [2023-12-15 21:11:59,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:59,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824788491] [2023-12-15 21:11:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:59,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:59,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:59,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813259140] [2023-12-15 21:11:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:59,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:59,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:59,310 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 21:11:59,328 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 21:11:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:59,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:11:59,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:12:00,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 628 proven. 366 refuted. 0 times theorem prover too weak. 7326 trivial. 0 not checked. [2023-12-15 21:12:00,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:12:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 6 proven. 186 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-12-15 21:12:00,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:12:00,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824788491] [2023-12-15 21:12:00,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:12:00,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813259140] [2023-12-15 21:12:00,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813259140] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:12:00,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:12:00,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2023-12-15 21:12:00,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585312474] [2023-12-15 21:12:00,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:12:00,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:12:00,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:12:00,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:12:00,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:12:00,923 INFO L87 Difference]: Start difference. First operand 537 states and 795 transitions. Second operand has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (127), 3 states have call predecessors, (127), 5 states have return successors, (128), 4 states have call predecessors, (128), 4 states have call successors, (128) [2023-12-15 21:12:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:12:01,354 INFO L93 Difference]: Finished difference Result 1032 states and 1509 transitions. [2023-12-15 21:12:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:12:01,355 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (127), 3 states have call predecessors, (127), 5 states have return successors, (128), 4 states have call predecessors, (128), 4 states have call successors, (128) Word has length 413 [2023-12-15 21:12:01,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:12:01,357 INFO L225 Difference]: With dead ends: 1032 [2023-12-15 21:12:01,357 INFO L226 Difference]: Without dead ends: 571 [2023-12-15 21:12:01,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 814 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:12:01,359 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 211 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:12:01,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 648 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:12:01,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-12-15 21:12:01,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 561. [2023-12-15 21:12:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 393 states have (on average 1.3358778625954197) internal successors, (525), 395 states have internal predecessors, (525), 140 states have call successors, (140), 27 states have call predecessors, (140), 27 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-15 21:12:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 805 transitions. [2023-12-15 21:12:01,405 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 805 transitions. Word has length 413 [2023-12-15 21:12:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:12:01,405 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 805 transitions. [2023-12-15 21:12:01,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (127), 3 states have call predecessors, (127), 5 states have return successors, (128), 4 states have call predecessors, (128), 4 states have call successors, (128) [2023-12-15 21:12:01,406 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 805 transitions. [2023-12-15 21:12:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-15 21:12:01,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:12:01,408 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:01,426 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 21:12:01,615 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 21:12:01,615 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:12:01,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:12:01,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1501508265, now seen corresponding path program 1 times [2023-12-15 21:12:01,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:12:01,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342188739] [2023-12-15 21:12:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:12:01,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:12:01,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:12:01,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304180086] [2023-12-15 21:12:01,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:12:01,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:12:01,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:12:01,673 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 21:12:01,674 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 21:12:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:12:01,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-15 21:12:01,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:12:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3936 proven. 348 refuted. 0 times theorem prover too weak. 4036 trivial. 0 not checked. [2023-12-15 21:12:05,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:12:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 264 proven. 303 refuted. 0 times theorem prover too weak. 7753 trivial. 0 not checked. [2023-12-15 21:12:17,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:12:17,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342188739] [2023-12-15 21:12:17,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:12:17,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304180086] [2023-12-15 21:12:17,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304180086] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:12:17,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:12:17,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2023-12-15 21:12:17,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523875767] [2023-12-15 21:12:17,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:12:17,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-15 21:12:17,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:12:17,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-15 21:12:17,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2023-12-15 21:12:17,401 INFO L87 Difference]: Start difference. First operand 561 states and 805 transitions. Second operand has 30 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 10 states have call successors, (130), 6 states have call predecessors, (130), 11 states have return successors, (130), 8 states have call predecessors, (130), 10 states have call successors, (130) [2023-12-15 21:12:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:12:40,368 INFO L93 Difference]: Finished difference Result 2534 states and 3717 transitions. [2023-12-15 21:12:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-15 21:12:40,369 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 10 states have call successors, (130), 6 states have call predecessors, (130), 11 states have return successors, (130), 8 states have call predecessors, (130), 10 states have call successors, (130) Word has length 414 [2023-12-15 21:12:40,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:12:40,379 INFO L225 Difference]: With dead ends: 2534 [2023-12-15 21:12:40,379 INFO L226 Difference]: Without dead ends: 2057 [2023-12-15 21:12:40,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 808 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1930 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1622, Invalid=3208, Unknown=0, NotChecked=0, Total=4830 [2023-12-15 21:12:40,385 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 3431 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 1698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3475 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 4555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1698 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:12:40,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3475 Valid, 3201 Invalid, 4555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1698 Valid, 2857 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2023-12-15 21:12:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2023-12-15 21:12:40,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1321. [2023-12-15 21:12:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 994 states have (on average 1.3993963782696177) internal successors, (1391), 996 states have internal predecessors, (1391), 270 states have call successors, (270), 56 states have call predecessors, (270), 56 states have return successors, (270), 268 states have call predecessors, (270), 270 states have call successors, (270) [2023-12-15 21:12:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1931 transitions. [2023-12-15 21:12:40,622 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1931 transitions. Word has length 414 [2023-12-15 21:12:40,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:12:40,623 INFO L495 AbstractCegarLoop]: Abstraction has 1321 states and 1931 transitions. [2023-12-15 21:12:40,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 10 states have call successors, (130), 6 states have call predecessors, (130), 11 states have return successors, (130), 8 states have call predecessors, (130), 10 states have call successors, (130) [2023-12-15 21:12:40,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1931 transitions. [2023-12-15 21:12:40,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-15 21:12:40,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:12:40,626 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:40,654 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 21:12:40,833 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 21:12:40,833 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:12:40,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:12:40,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1360959655, now seen corresponding path program 1 times [2023-12-15 21:12:40,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:12:40,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244377923] [2023-12-15 21:12:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:12:40,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:12:40,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:12:40,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745560508] [2023-12-15 21:12:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:12:40,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:12:40,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:12:40,865 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:12:40,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 21:12:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:12:41,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:12:41,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:12:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 64 proven. 192 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2023-12-15 21:12:41,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:12:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-12-15 21:12:43,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:12:43,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244377923] [2023-12-15 21:12:43,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:12:43,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745560508] [2023-12-15 21:12:43,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745560508] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:12:43,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:12:43,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2023-12-15 21:12:43,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502229919] [2023-12-15 21:12:43,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:12:43,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:12:43,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:12:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:12:43,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:12:43,882 INFO L87 Difference]: Start difference. First operand 1321 states and 1931 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:12:44,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:12:44,205 INFO L93 Difference]: Finished difference Result 2724 states and 4004 transitions. [2023-12-15 21:12:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:12:44,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 414 [2023-12-15 21:12:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:12:44,210 INFO L225 Difference]: With dead ends: 2724 [2023-12-15 21:12:44,211 INFO L226 Difference]: Without dead ends: 1487 [2023-12-15 21:12:44,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:12:44,213 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 74 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:12:44,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 829 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:12:44,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2023-12-15 21:12:44,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1437. [2023-12-15 21:12:44,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1110 states have (on average 1.4126126126126126) internal successors, (1568), 1112 states have internal predecessors, (1568), 270 states have call successors, (270), 56 states have call predecessors, (270), 56 states have return successors, (270), 268 states have call predecessors, (270), 270 states have call successors, (270) [2023-12-15 21:12:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2108 transitions. [2023-12-15 21:12:44,435 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2108 transitions. Word has length 414 [2023-12-15 21:12:44,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:12:44,435 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2108 transitions. [2023-12-15 21:12:44,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-12-15 21:12:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2108 transitions. [2023-12-15 21:12:44,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-15 21:12:44,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:12:44,438 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:44,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-15 21:12:44,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 21:12:44,645 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:12:44,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:12:44,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1802074086, now seen corresponding path program 1 times [2023-12-15 21:12:44,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:12:44,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131067595] [2023-12-15 21:12:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:12:44,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:12:44,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:12:44,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430758210] [2023-12-15 21:12:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:12:44,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:12:44,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:12:44,676 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:12:44,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 21:12:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:12:44,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 21:12:44,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:12:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4980 proven. 261 refuted. 0 times theorem prover too weak. 3079 trivial. 0 not checked. [2023-12-15 21:12:45,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:12:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 318 proven. 63 refuted. 0 times theorem prover too weak. 7939 trivial. 0 not checked. [2023-12-15 21:12:46,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:12:46,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131067595] [2023-12-15 21:12:46,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:12:46,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430758210] [2023-12-15 21:12:46,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430758210] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:12:46,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:12:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2023-12-15 21:12:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308485555] [2023-12-15 21:12:46,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:12:46,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-15 21:12:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:12:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-15 21:12:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2023-12-15 21:12:46,551 INFO L87 Difference]: Start difference. First operand 1437 states and 2108 transitions. Second operand has 22 states, 21 states have (on average 8.714285714285714) internal successors, (183), 20 states have internal predecessors, (183), 7 states have call successors, (120), 5 states have call predecessors, (120), 10 states have return successors, (121), 7 states have call predecessors, (121), 7 states have call successors, (121) Received shutdown request... [2023-12-15 21:12:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-15 21:12:47,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=364, Invalid=1042, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 21:12:47,604 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 314 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 21:12:47,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 699 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 21:12:47,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:12:47,612 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:12:47,612 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 21:12:47,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 21:12:47,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 21:12:47,808 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1437states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (415 states constructed, input type IntersectNwa). [2023-12-15 21:12:47,811 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:12:47,812 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:12:47,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:12:47 BoogieIcfgContainer [2023-12-15 21:12:47,813 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:12:47,814 INFO L158 Benchmark]: Toolchain (without parser) took 64982.49ms. Allocated memory was 299.9MB in the beginning and 936.4MB in the end (delta: 636.5MB). Free memory was 245.3MB in the beginning and 536.0MB in the end (delta: -290.7MB). Peak memory consumption was 347.0MB. Max. memory is 8.0GB. [2023-12-15 21:12:47,814 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 238.0MB. Free memory was 188.5MB in the beginning and 188.4MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:12:47,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.07ms. Allocated memory is still 299.9MB. Free memory was 245.3MB in the beginning and 219.3MB in the end (delta: 26.0MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-15 21:12:47,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.43ms. Allocated memory is still 299.9MB. Free memory was 219.3MB in the beginning and 207.6MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 21:12:47,815 INFO L158 Benchmark]: Boogie Preprocessor took 163.41ms. Allocated memory is still 299.9MB. Free memory was 207.6MB in the beginning and 241.8MB in the end (delta: -34.2MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. [2023-12-15 21:12:47,815 INFO L158 Benchmark]: RCFGBuilder took 757.83ms. Allocated memory is still 299.9MB. Free memory was 241.8MB in the beginning and 172.6MB in the end (delta: 69.1MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. [2023-12-15 21:12:47,815 INFO L158 Benchmark]: TraceAbstraction took 63609.73ms. Allocated memory was 299.9MB in the beginning and 936.4MB in the end (delta: 636.5MB). Free memory was 171.6MB in the beginning and 536.0MB in the end (delta: -364.4MB). Peak memory consumption was 271.8MB. Max. memory is 8.0GB. [2023-12-15 21:12:47,819 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 238.0MB. Free memory was 188.5MB in the beginning and 188.4MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 368.07ms. Allocated memory is still 299.9MB. Free memory was 245.3MB in the beginning and 219.3MB in the end (delta: 26.0MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 79.43ms. Allocated memory is still 299.9MB. Free memory was 219.3MB in the beginning and 207.6MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 163.41ms. Allocated memory is still 299.9MB. Free memory was 207.6MB in the beginning and 241.8MB in the end (delta: -34.2MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. * RCFGBuilder took 757.83ms. Allocated memory is still 299.9MB. Free memory was 241.8MB in the beginning and 172.6MB in the end (delta: 69.1MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. * TraceAbstraction took 63609.73ms. Allocated memory was 299.9MB in the beginning and 936.4MB in the end (delta: 636.5MB). Free memory was 171.6MB in the beginning and 536.0MB in the end (delta: -364.4MB). Peak memory consumption was 271.8MB. 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 (1437states) and FLOYD_HOARE automaton (currently 27 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (415 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 190 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63.6s, OverallIterations: 17, TraceHistogramMax: 65, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 29.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8975 SdHoareTripleChecker+Valid, 19.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8773 mSDsluCounter, 16318 SdHoareTripleChecker+Invalid, 17.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10499 mSDsCounter, 3013 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8255 IncrementalHoareTripleChecker+Invalid, 11268 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3013 mSolverCounterUnsat, 5819 mSDtfsCounter, 8255 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10777 GetRequests, 10564 SyntacticMatches, 5 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2371 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1437occurred in iteration=16, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 2160 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 24.6s InterpolantComputationTime, 7385 NumberOfCodeBlocks, 7385 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 10660 ConstructedInterpolants, 0 QuantifiedInterpolants, 56340 SizeOfPredicates, 63 NumberOfNonLiveVariables, 15961 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 213563/216320 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