/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-14.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 19:49:30,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 19:49:30,322 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 19:49:30,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 19:49:30,325 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 19:49:30,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 19:49:30,339 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 19:49:30,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 19:49:30,340 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 19:49:30,340 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 19:49:30,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 19:49:30,341 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 19:49:30,341 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 19:49:30,341 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 19:49:30,342 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 19:49:30,342 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 19:49:30,342 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 19:49:30,342 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 19:49:30,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 19:49:30,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 19:49:30,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 19:49:30,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 19:49:30,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 19:49:30,346 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 19:49:30,346 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 19:49:30,347 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 19:49:30,347 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 19:49:30,347 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 19:49:30,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 19:49:30,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 19:49:30,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 19:49:30,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 19:49:30,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 19:49:30,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 19:49:30,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 19:49:30,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 19:49:30,348 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 19:49:30,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 19:49:30,348 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 19:49:30,349 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 19:49:30,349 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 19:49:30,349 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 19:49:30,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 19:49:30,349 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 19:49:30,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 19:49:30,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 19:49:30,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 19:49:30,519 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 19:49:30,520 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 19:49:30,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-14.i [2023-12-20 19:49:31,531 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 19:49:31,784 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 19:49:31,785 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-14.i [2023-12-20 19:49:31,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe4d6fea/2b5fca235e604994abe8e914672e27fc/FLAG93022e25b [2023-12-20 19:49:31,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe4d6fea/2b5fca235e604994abe8e914672e27fc [2023-12-20 19:49:31,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 19:49:31,818 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 19:49:31,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 19:49:31,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 19:49:31,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 19:49:31,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:49:31" (1/1) ... [2023-12-20 19:49:31,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26df00f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:31, skipping insertion in model container [2023-12-20 19:49:31,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:49:31" (1/1) ... [2023-12-20 19:49:31,861 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 19:49:31,976 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-14.i[916,929] [2023-12-20 19:49:32,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 19:49:32,125 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 19:49:32,133 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-14.i[916,929] [2023-12-20 19:49:32,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 19:49:32,209 INFO L206 MainTranslator]: Completed translation [2023-12-20 19:49:32,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32 WrapperNode [2023-12-20 19:49:32,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 19:49:32,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 19:49:32,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 19:49:32,211 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 19:49:32,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (1/1) ... [2023-12-20 19:49:32,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (1/1) ... [2023-12-20 19:49:32,315 INFO L138 Inliner]: procedures = 26, calls = 139, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 796 [2023-12-20 19:49:32,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 19:49:32,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 19:49:32,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 19:49:32,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 19:49:32,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (1/1) ... [2023-12-20 19:49:32,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (1/1) ... [2023-12-20 19:49:32,336 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (1/1) ... [2023-12-20 19:49:32,394 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]. [2023-12-20 19:49:32,395 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (1/1) ... [2023-12-20 19:49:32,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (1/1) ... [2023-12-20 19:49:32,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (1/1) ... [2023-12-20 19:49:32,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (1/1) ... [2023-12-20 19:49:32,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (1/1) ... [2023-12-20 19:49:32,450 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (1/1) ... [2023-12-20 19:49:32,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 19:49:32,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 19:49:32,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 19:49:32,462 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 19:49:32,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (1/1) ... [2023-12-20 19:49:32,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 19:49:32,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:49:32,489 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) [2023-12-20 19:49:32,505 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 [2023-12-20 19:49:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 19:49:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 19:49:32,514 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 19:49:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 19:49:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 19:49:32,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 19:49:32,651 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 19:49:32,654 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 19:49:33,253 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 19:49:33,283 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 19:49:33,283 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 19:49:33,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:49:33 BoogieIcfgContainer [2023-12-20 19:49:33,283 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 19:49:33,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 19:49:33,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 19:49:33,287 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 19:49:33,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 07:49:31" (1/3) ... [2023-12-20 19:49:33,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66664dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:49:33, skipping insertion in model container [2023-12-20 19:49:33,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:49:32" (2/3) ... [2023-12-20 19:49:33,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66664dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:49:33, skipping insertion in model container [2023-12-20 19:49:33,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:49:33" (3/3) ... [2023-12-20 19:49:33,289 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-14.i [2023-12-20 19:49:33,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 19:49:33,300 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 19:49:33,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 19:49:33,368 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;@11f74a12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 19:49:33,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 19:49:33,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 199 states have (on average 1.5829145728643217) internal successors, (315), 200 states have internal predecessors, (315), 126 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2023-12-20 19:49:33,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-12-20 19:49:33,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:49:33,398 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:49:33,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:49:33,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:49:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1367741589, now seen corresponding path program 1 times [2023-12-20 19:49:33,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:49:33,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399405518] [2023-12-20 19:49:33,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:33,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:49:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:49:33,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:49:33,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399405518] [2023-12-20 19:49:33,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 19:49:33,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597679860] [2023-12-20 19:49:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:33,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:49:33,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:49:33,720 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) [2023-12-20 19:49:33,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 19:49:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:49:34,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 19:49:34,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:49:34,194 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 31250 trivial. 0 not checked. [2023-12-20 19:49:34,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:49:34,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597679860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:49:34,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:49:34,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 19:49:34,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927984851] [2023-12-20 19:49:34,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:49:34,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 19:49:34,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:49:34,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 19:49:34,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 19:49:34,223 INFO L87 Difference]: Start difference. First operand has 328 states, 199 states have (on average 1.5829145728643217) internal successors, (315), 200 states have internal predecessors, (315), 126 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) Second operand has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 2 states have call successors, (126), 2 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 2 states have call successors, (126) [2023-12-20 19:49:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:49:34,282 INFO L93 Difference]: Finished difference Result 652 states and 1256 transitions. [2023-12-20 19:49:34,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 19:49:34,285 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 2 states have call successors, (126), 2 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 2 states have call successors, (126) Word has length 780 [2023-12-20 19:49:34,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:49:34,293 INFO L225 Difference]: With dead ends: 652 [2023-12-20 19:49:34,293 INFO L226 Difference]: Without dead ends: 325 [2023-12-20 19:49:34,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 19:49:34,300 INFO L413 NwaCegarLoop]: 556 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, 556 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 [2023-12-20 19:49:34,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:49:34,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-12-20 19:49:34,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2023-12-20 19:49:34,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 197 states have (on average 1.5583756345177664) internal successors, (307), 197 states have internal predecessors, (307), 126 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2023-12-20 19:49:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 559 transitions. [2023-12-20 19:49:34,360 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 559 transitions. Word has length 780 [2023-12-20 19:49:34,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:49:34,360 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 559 transitions. [2023-12-20 19:49:34,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 2 states have call successors, (126), 2 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 2 states have call successors, (126) [2023-12-20 19:49:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 559 transitions. [2023-12-20 19:49:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-12-20 19:49:34,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:49:34,376 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:49:34,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 19:49:34,583 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 [2023-12-20 19:49:34,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:49:34,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:49:34,585 INFO L85 PathProgramCache]: Analyzing trace with hash -788021989, now seen corresponding path program 1 times [2023-12-20 19:49:34,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:49:34,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298340616] [2023-12-20 19:49:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:34,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:49:34,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:49:34,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533937577] [2023-12-20 19:49:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:34,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:49:34,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:49:34,711 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) [2023-12-20 19:49:34,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 19:49:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:49:35,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 19:49:35,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:49:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-12-20 19:49:35,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:49:35,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:49:35,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298340616] [2023-12-20 19:49:35,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:49:35,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533937577] [2023-12-20 19:49:35,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533937577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:49:35,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:49:35,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 19:49:35,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171929135] [2023-12-20 19:49:35,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:49:35,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 19:49:35,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:49:35,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 19:49:35,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 19:49:35,926 INFO L87 Difference]: Start difference. First operand 325 states and 559 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:49:37,494 INFO L93 Difference]: Finished difference Result 1992 states and 3462 transitions. [2023-12-20 19:49:37,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 19:49:37,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 780 [2023-12-20 19:49:37,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:49:37,504 INFO L225 Difference]: With dead ends: 1992 [2023-12-20 19:49:37,504 INFO L226 Difference]: Without dead ends: 1668 [2023-12-20 19:49:37,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-20 19:49:37,507 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 2077 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2077 SdHoareTripleChecker+Valid, 3820 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 19:49:37,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2077 Valid, 3820 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 19:49:37,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2023-12-20 19:49:37,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1329. [2023-12-20 19:49:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 869 states have (on average 1.6168009205983889) internal successors, (1405), 871 states have internal predecessors, (1405), 454 states have call successors, (454), 5 states have call predecessors, (454), 5 states have return successors, (454), 452 states have call predecessors, (454), 454 states have call successors, (454) [2023-12-20 19:49:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 2313 transitions. [2023-12-20 19:49:37,679 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 2313 transitions. Word has length 780 [2023-12-20 19:49:37,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:49:37,680 INFO L495 AbstractCegarLoop]: Abstraction has 1329 states and 2313 transitions. [2023-12-20 19:49:37,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:37,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 2313 transitions. [2023-12-20 19:49:37,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-12-20 19:49:37,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:49:37,686 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:49:37,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 19:49:37,894 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 [2023-12-20 19:49:37,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:49:37,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:49:37,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1772840857, now seen corresponding path program 1 times [2023-12-20 19:49:37,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:49:37,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978302294] [2023-12-20 19:49:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:37,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:49:37,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:49:37,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883689964] [2023-12-20 19:49:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:37,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:49:37,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:49:37,963 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) [2023-12-20 19:49:38,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 19:49:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:49:38,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 19:49:38,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:49:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-12-20 19:49:38,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:49:38,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:49:38,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978302294] [2023-12-20 19:49:38,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:49:38,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883689964] [2023-12-20 19:49:38,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883689964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:49:38,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:49:38,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:49:38,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948936410] [2023-12-20 19:49:38,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:49:38,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 19:49:38,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:49:38,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 19:49:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 19:49:38,949 INFO L87 Difference]: Start difference. First operand 1329 states and 2313 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:49:39,341 INFO L93 Difference]: Finished difference Result 3159 states and 5498 transitions. [2023-12-20 19:49:39,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 19:49:39,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 780 [2023-12-20 19:49:39,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:49:39,350 INFO L225 Difference]: With dead ends: 3159 [2023-12-20 19:49:39,350 INFO L226 Difference]: Without dead ends: 1831 [2023-12-20 19:49:39,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 19:49:39,355 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 765 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 19:49:39,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 2268 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 19:49:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2023-12-20 19:49:39,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1317. [2023-12-20 19:49:39,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 857 states have (on average 1.6137689614935822) internal successors, (1383), 859 states have internal predecessors, (1383), 454 states have call successors, (454), 5 states have call predecessors, (454), 5 states have return successors, (454), 452 states have call predecessors, (454), 454 states have call successors, (454) [2023-12-20 19:49:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 2291 transitions. [2023-12-20 19:49:39,493 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 2291 transitions. Word has length 780 [2023-12-20 19:49:39,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:49:39,494 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 2291 transitions. [2023-12-20 19:49:39,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:39,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 2291 transitions. [2023-12-20 19:49:39,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-12-20 19:49:39,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:49:39,500 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:49:39,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 19:49:39,707 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 [2023-12-20 19:49:39,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:49:39,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:49:39,713 INFO L85 PathProgramCache]: Analyzing trace with hash 476468695, now seen corresponding path program 1 times [2023-12-20 19:49:39,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:49:39,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522871044] [2023-12-20 19:49:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:39,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:49:39,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:49:39,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165970137] [2023-12-20 19:49:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:39,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:49:39,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:49:39,773 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) [2023-12-20 19:49:39,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 19:49:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:49:40,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:49:40,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:49:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-12-20 19:49:40,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:49:40,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:49:40,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522871044] [2023-12-20 19:49:40,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:49:40,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165970137] [2023-12-20 19:49:40,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165970137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:49:40,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:49:40,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 19:49:40,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219341071] [2023-12-20 19:49:40,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:49:40,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:49:40,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:49:40,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:49:40,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:49:40,779 INFO L87 Difference]: Start difference. First operand 1317 states and 2291 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:40,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:49:40,870 INFO L93 Difference]: Finished difference Result 3949 states and 6871 transitions. [2023-12-20 19:49:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:49:40,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 781 [2023-12-20 19:49:40,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:49:40,882 INFO L225 Difference]: With dead ends: 3949 [2023-12-20 19:49:40,883 INFO L226 Difference]: Without dead ends: 2633 [2023-12-20 19:49:40,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:49:40,889 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 190 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:49:40,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1102 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:49:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2023-12-20 19:49:41,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2631. [2023-12-20 19:49:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 1712 states have (on average 1.6115654205607477) internal successors, (2759), 1716 states have internal predecessors, (2759), 908 states have call successors, (908), 10 states have call predecessors, (908), 10 states have return successors, (908), 904 states have call predecessors, (908), 908 states have call successors, (908) [2023-12-20 19:49:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4575 transitions. [2023-12-20 19:49:41,148 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4575 transitions. Word has length 781 [2023-12-20 19:49:41,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:49:41,150 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 4575 transitions. [2023-12-20 19:49:41,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:41,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4575 transitions. [2023-12-20 19:49:41,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-12-20 19:49:41,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:49:41,156 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:49:41,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 19:49:41,364 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 [2023-12-20 19:49:41,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:49:41,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:49:41,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1368898471, now seen corresponding path program 1 times [2023-12-20 19:49:41,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:49:41,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864644843] [2023-12-20 19:49:41,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:41,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:49:41,426 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:49:41,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965360514] [2023-12-20 19:49:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:41,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:49:41,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:49:41,432 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) [2023-12-20 19:49:41,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 19:49:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:49:41,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:49:41,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:49:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-12-20 19:49:41,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:49:41,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:49:41,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864644843] [2023-12-20 19:49:41,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:49:41,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965360514] [2023-12-20 19:49:41,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965360514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:49:41,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:49:41,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:49:41,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368526599] [2023-12-20 19:49:41,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:49:41,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:49:41,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:49:41,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:49:41,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:49:41,804 INFO L87 Difference]: Start difference. First operand 2631 states and 4575 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:49:41,974 INFO L93 Difference]: Finished difference Result 7009 states and 12253 transitions. [2023-12-20 19:49:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:49:41,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 781 [2023-12-20 19:49:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:49:41,990 INFO L225 Difference]: With dead ends: 7009 [2023-12-20 19:49:41,991 INFO L226 Difference]: Without dead ends: 4379 [2023-12-20 19:49:41,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:49:41,998 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 301 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:49:41,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1194 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:49:42,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4379 states. [2023-12-20 19:49:42,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4379 to 4367. [2023-12-20 19:49:42,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4367 states, 3078 states have (on average 1.6608187134502923) internal successors, (5112), 3092 states have internal predecessors, (5112), 1268 states have call successors, (1268), 20 states have call predecessors, (1268), 20 states have return successors, (1268), 1254 states have call predecessors, (1268), 1268 states have call successors, (1268) [2023-12-20 19:49:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4367 states to 4367 states and 7648 transitions. [2023-12-20 19:49:42,351 INFO L78 Accepts]: Start accepts. Automaton has 4367 states and 7648 transitions. Word has length 781 [2023-12-20 19:49:42,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:49:42,352 INFO L495 AbstractCegarLoop]: Abstraction has 4367 states and 7648 transitions. [2023-12-20 19:49:42,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:42,352 INFO L276 IsEmpty]: Start isEmpty. Operand 4367 states and 7648 transitions. [2023-12-20 19:49:42,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-12-20 19:49:42,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:49:42,359 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:49:42,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 19:49:42,578 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 [2023-12-20 19:49:42,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:49:42,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:49:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash 204352279, now seen corresponding path program 1 times [2023-12-20 19:49:42,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:49:42,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859205763] [2023-12-20 19:49:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:42,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:49:42,630 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:49:42,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132120457] [2023-12-20 19:49:42,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:42,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:49:42,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:49:42,646 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) [2023-12-20 19:49:42,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 19:49:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:49:42,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:49:42,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:49:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-12-20 19:49:43,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:49:43,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:49:43,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859205763] [2023-12-20 19:49:43,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:49:43,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132120457] [2023-12-20 19:49:43,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132120457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:49:43,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:49:43,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:49:43,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24346188] [2023-12-20 19:49:43,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:49:43,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:49:43,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:49:43,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:49:43,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:49:43,026 INFO L87 Difference]: Start difference. First operand 4367 states and 7648 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:43,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:49:43,317 INFO L93 Difference]: Finished difference Result 12287 states and 21582 transitions. [2023-12-20 19:49:43,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:49:43,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 781 [2023-12-20 19:49:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:49:43,350 INFO L225 Difference]: With dead ends: 12287 [2023-12-20 19:49:43,351 INFO L226 Difference]: Without dead ends: 7921 [2023-12-20 19:49:43,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:49:43,364 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 319 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:49:43,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1222 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:49:43,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7921 states. [2023-12-20 19:49:43,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7921 to 7913. [2023-12-20 19:49:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7913 states, 5810 states have (on average 1.6716006884681585) internal successors, (9712), 5844 states have internal predecessors, (9712), 2062 states have call successors, (2062), 40 states have call predecessors, (2062), 40 states have return successors, (2062), 2028 states have call predecessors, (2062), 2062 states have call successors, (2062) [2023-12-20 19:49:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7913 states to 7913 states and 13836 transitions. [2023-12-20 19:49:43,945 INFO L78 Accepts]: Start accepts. Automaton has 7913 states and 13836 transitions. Word has length 781 [2023-12-20 19:49:43,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:49:43,945 INFO L495 AbstractCegarLoop]: Abstraction has 7913 states and 13836 transitions. [2023-12-20 19:49:43,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:43,946 INFO L276 IsEmpty]: Start isEmpty. Operand 7913 states and 13836 transitions. [2023-12-20 19:49:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-12-20 19:49:43,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:49:43,956 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:49:43,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 19:49:44,163 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 [2023-12-20 19:49:44,164 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:49:44,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:49:44,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1118640727, now seen corresponding path program 1 times [2023-12-20 19:49:44,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:49:44,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645220604] [2023-12-20 19:49:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:44,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:49:44,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:49:44,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482563702] [2023-12-20 19:49:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:44,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:49:44,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:49:44,220 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) [2023-12-20 19:49:44,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 19:49:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:49:44,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:49:44,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:49:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-12-20 19:49:44,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:49:44,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:49:44,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645220604] [2023-12-20 19:49:44,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:49:44,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482563702] [2023-12-20 19:49:44,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482563702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:49:44,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:49:44,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:49:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397497829] [2023-12-20 19:49:44,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:49:44,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:49:44,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:49:44,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:49:44,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:49:44,690 INFO L87 Difference]: Start difference. First operand 7913 states and 13836 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:45,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:49:45,164 INFO L93 Difference]: Finished difference Result 15857 states and 27696 transitions. [2023-12-20 19:49:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:49:45,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 781 [2023-12-20 19:49:45,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:49:45,227 INFO L225 Difference]: With dead ends: 15857 [2023-12-20 19:49:45,228 INFO L226 Difference]: Without dead ends: 7945 [2023-12-20 19:49:45,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:49:45,263 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 272 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:49:45,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 1252 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:49:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7945 states. [2023-12-20 19:49:45,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7945 to 6289. [2023-12-20 19:49:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6289 states, 4994 states have (on average 1.7092511013215859) internal successors, (8536), 5008 states have internal predecessors, (8536), 1268 states have call successors, (1268), 26 states have call predecessors, (1268), 26 states have return successors, (1268), 1254 states have call predecessors, (1268), 1268 states have call successors, (1268) [2023-12-20 19:49:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6289 states to 6289 states and 11072 transitions. [2023-12-20 19:49:45,973 INFO L78 Accepts]: Start accepts. Automaton has 6289 states and 11072 transitions. Word has length 781 [2023-12-20 19:49:45,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:49:45,974 INFO L495 AbstractCegarLoop]: Abstraction has 6289 states and 11072 transitions. [2023-12-20 19:49:45,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:45,974 INFO L276 IsEmpty]: Start isEmpty. Operand 6289 states and 11072 transitions. [2023-12-20 19:49:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-12-20 19:49:45,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:49:45,984 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:49:46,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 19:49:46,204 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 [2023-12-20 19:49:46,205 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:49:46,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:49:46,205 INFO L85 PathProgramCache]: Analyzing trace with hash 531834713, now seen corresponding path program 1 times [2023-12-20 19:49:46,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:49:46,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307369429] [2023-12-20 19:49:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:46,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:49:46,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:49:46,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367427506] [2023-12-20 19:49:46,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:46,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:49:46,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:49:46,255 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) [2023-12-20 19:49:46,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 19:49:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:49:46,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:49:46,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:49:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-12-20 19:49:46,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:49:46,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:49:46,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307369429] [2023-12-20 19:49:46,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:49:46,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367427506] [2023-12-20 19:49:46,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367427506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:49:46,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:49:46,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:49:46,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334466138] [2023-12-20 19:49:46,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:49:46,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:49:46,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:49:46,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:49:46,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:49:46,616 INFO L87 Difference]: Start difference. First operand 6289 states and 11072 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:46,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:49:46,960 INFO L93 Difference]: Finished difference Result 15722 states and 27689 transitions. [2023-12-20 19:49:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:49:46,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 781 [2023-12-20 19:49:46,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:49:46,981 INFO L225 Difference]: With dead ends: 15722 [2023-12-20 19:49:46,981 INFO L226 Difference]: Without dead ends: 9434 [2023-12-20 19:49:46,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:49:46,997 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 537 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:49:46,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1104 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:49:47,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9434 states. [2023-12-20 19:49:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9434 to 9432. [2023-12-20 19:49:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9432 states, 7490 states have (on average 1.7053404539385848) internal successors, (12773), 7511 states have internal predecessors, (12773), 1902 states have call successors, (1902), 39 states have call predecessors, (1902), 39 states have return successors, (1902), 1881 states have call predecessors, (1902), 1902 states have call successors, (1902) [2023-12-20 19:49:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9432 states to 9432 states and 16577 transitions. [2023-12-20 19:49:47,579 INFO L78 Accepts]: Start accepts. Automaton has 9432 states and 16577 transitions. Word has length 781 [2023-12-20 19:49:47,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:49:47,580 INFO L495 AbstractCegarLoop]: Abstraction has 9432 states and 16577 transitions. [2023-12-20 19:49:47,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:47,580 INFO L276 IsEmpty]: Start isEmpty. Operand 9432 states and 16577 transitions. [2023-12-20 19:49:47,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-12-20 19:49:47,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:49:47,590 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:49:47,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 19:49:47,797 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 [2023-12-20 19:49:47,798 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:49:47,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:49:47,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1462309993, now seen corresponding path program 1 times [2023-12-20 19:49:47,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:49:47,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587588761] [2023-12-20 19:49:47,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:47,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:49:47,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:49:47,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661519132] [2023-12-20 19:49:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:47,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:49:47,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:49:47,848 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) [2023-12-20 19:49:47,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 19:49:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:49:48,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:49:48,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:49:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-12-20 19:49:48,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:49:48,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:49:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587588761] [2023-12-20 19:49:48,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:49:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661519132] [2023-12-20 19:49:48,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661519132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:49:48,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:49:48,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:49:48,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431762689] [2023-12-20 19:49:48,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:49:48,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:49:48,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:49:48,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:49:48,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:49:48,228 INFO L87 Difference]: Start difference. First operand 9432 states and 16577 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:49:48,646 INFO L93 Difference]: Finished difference Result 23470 states and 40794 transitions. [2023-12-20 19:49:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:49:48,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 781 [2023-12-20 19:49:48,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:49:48,675 INFO L225 Difference]: With dead ends: 23470 [2023-12-20 19:49:48,676 INFO L226 Difference]: Without dead ends: 14039 [2023-12-20 19:49:48,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:49:48,692 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 308 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:49:48,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1104 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:49:48,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14039 states. [2023-12-20 19:49:49,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14039 to 14028. [2023-12-20 19:49:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14028 states, 10433 states have (on average 1.6405635962810314) internal successors, (17116), 10484 states have internal predecessors, (17116), 3516 states have call successors, (3516), 78 states have call predecessors, (3516), 78 states have return successors, (3516), 3465 states have call predecessors, (3516), 3516 states have call successors, (3516) [2023-12-20 19:49:49,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14028 states to 14028 states and 24148 transitions. [2023-12-20 19:49:49,420 INFO L78 Accepts]: Start accepts. Automaton has 14028 states and 24148 transitions. Word has length 781 [2023-12-20 19:49:49,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:49:49,420 INFO L495 AbstractCegarLoop]: Abstraction has 14028 states and 24148 transitions. [2023-12-20 19:49:49,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 14028 states and 24148 transitions. [2023-12-20 19:49:49,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2023-12-20 19:49:49,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:49:49,436 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:49:49,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 19:49:49,643 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 [2023-12-20 19:49:49,644 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:49:49,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:49:49,644 INFO L85 PathProgramCache]: Analyzing trace with hash 460918041, now seen corresponding path program 1 times [2023-12-20 19:49:49,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:49:49,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218571411] [2023-12-20 19:49:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:49,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:49:49,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:49:49,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094285693] [2023-12-20 19:49:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:49,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:49:49,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:49:49,706 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) [2023-12-20 19:49:49,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 19:49:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:49:50,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 19:49:50,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:49:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 14069 proven. 123 refuted. 0 times theorem prover too weak. 17308 trivial. 0 not checked. [2023-12-20 19:49:50,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:49:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 252 proven. 123 refuted. 0 times theorem prover too weak. 31125 trivial. 0 not checked. [2023-12-20 19:49:50,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:49:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218571411] [2023-12-20 19:49:50,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:49:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094285693] [2023-12-20 19:49:50,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094285693] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:49:50,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:49:50,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 19:49:50,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643948184] [2023-12-20 19:49:50,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:49:50,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 19:49:50,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:49:50,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 19:49:50,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 19:49:50,687 INFO L87 Difference]: Start difference. First operand 14028 states and 24148 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (167), 2 states have call predecessors, (167), 4 states have return successors, (168), 2 states have call predecessors, (168), 2 states have call successors, (168) [2023-12-20 19:49:51,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:49:51,849 INFO L93 Difference]: Finished difference Result 28283 states and 48505 transitions. [2023-12-20 19:49:51,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 19:49:51,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (167), 2 states have call predecessors, (167), 4 states have return successors, (168), 2 states have call predecessors, (168), 2 states have call successors, (168) Word has length 781 [2023-12-20 19:49:51,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:49:51,890 INFO L225 Difference]: With dead ends: 28283 [2023-12-20 19:49:51,890 INFO L226 Difference]: Without dead ends: 14256 [2023-12-20 19:49:51,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1564 GetRequests, 1554 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 19:49:51,916 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 552 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 19:49:51,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1005 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 19:49:51,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14256 states. [2023-12-20 19:49:52,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14256 to 14100. [2023-12-20 19:49:52,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14100 states, 10487 states have (on average 1.614379708210165) internal successors, (16930), 10538 states have internal predecessors, (16930), 3516 states have call successors, (3516), 96 states have call predecessors, (3516), 96 states have return successors, (3516), 3465 states have call predecessors, (3516), 3516 states have call successors, (3516) [2023-12-20 19:49:52,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14100 states to 14100 states and 23962 transitions. [2023-12-20 19:49:52,758 INFO L78 Accepts]: Start accepts. Automaton has 14100 states and 23962 transitions. Word has length 781 [2023-12-20 19:49:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:49:52,759 INFO L495 AbstractCegarLoop]: Abstraction has 14100 states and 23962 transitions. [2023-12-20 19:49:52,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (167), 2 states have call predecessors, (167), 4 states have return successors, (168), 2 states have call predecessors, (168), 2 states have call successors, (168) [2023-12-20 19:49:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 14100 states and 23962 transitions. [2023-12-20 19:49:52,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-12-20 19:49:52,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:49:52,773 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:49:52,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 19:49:52,981 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 [2023-12-20 19:49:52,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:49:52,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:49:52,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1289726402, now seen corresponding path program 1 times [2023-12-20 19:49:52,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:49:52,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132908593] [2023-12-20 19:49:52,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:52,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:49:53,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:49:53,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351673954] [2023-12-20 19:49:53,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:49:53,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:49:53,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:49:53,040 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) [2023-12-20 19:49:53,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 19:49:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:49:53,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 19:49:53,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:49:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-12-20 19:49:54,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:49:54,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:49:54,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132908593] [2023-12-20 19:49:54,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:49:54,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351673954] [2023-12-20 19:49:54,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351673954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:49:54,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:49:54,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 19:49:54,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131567063] [2023-12-20 19:49:54,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:49:54,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 19:49:54,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:49:54,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 19:49:54,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 19:49:54,167 INFO L87 Difference]: Start difference. First operand 14100 states and 23962 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:56,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:49:56,756 INFO L93 Difference]: Finished difference Result 61931 states and 105041 transitions. [2023-12-20 19:49:56,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 19:49:56,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 782 [2023-12-20 19:49:56,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:49:56,873 INFO L225 Difference]: With dead ends: 61931 [2023-12-20 19:49:56,873 INFO L226 Difference]: Without dead ends: 47832 [2023-12-20 19:49:56,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 19:49:56,912 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1662 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 19:49:56,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 1644 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 19:49:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47832 states. [2023-12-20 19:49:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47832 to 47814. [2023-12-20 19:49:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47814 states, 34985 states have (on average 1.5906531370587396) internal successors, (55649), 35174 states have internal predecessors, (55649), 12480 states have call successors, (12480), 348 states have call predecessors, (12480), 348 states have return successors, (12480), 12291 states have call predecessors, (12480), 12480 states have call successors, (12480) [2023-12-20 19:49:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47814 states to 47814 states and 80609 transitions. [2023-12-20 19:49:59,828 INFO L78 Accepts]: Start accepts. Automaton has 47814 states and 80609 transitions. Word has length 782 [2023-12-20 19:49:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:49:59,828 INFO L495 AbstractCegarLoop]: Abstraction has 47814 states and 80609 transitions. [2023-12-20 19:49:59,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:49:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 47814 states and 80609 transitions. [2023-12-20 19:49:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-12-20 19:49:59,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:49:59,860 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:49:59,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 19:50:00,069 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 [2023-12-20 19:50:00,069 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:50:00,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:50:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1949257924, now seen corresponding path program 1 times [2023-12-20 19:50:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:50:00,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170365466] [2023-12-20 19:50:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:50:00,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:50:00,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:50:00,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398240002] [2023-12-20 19:50:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:50:00,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:50:00,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:50:00,305 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) [2023-12-20 19:50:00,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 19:50:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:50:00,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 19:50:00,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:50:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-12-20 19:50:00,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:50:00,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:50:00,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170365466] [2023-12-20 19:50:00,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:50:00,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398240002] [2023-12-20 19:50:00,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398240002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:50:00,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:50:00,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 19:50:00,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077727262] [2023-12-20 19:50:00,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:50:00,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 19:50:00,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:50:00,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 19:50:00,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 19:50:00,740 INFO L87 Difference]: Start difference. First operand 47814 states and 80609 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:50:05,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:50:05,459 INFO L93 Difference]: Finished difference Result 155834 states and 262144 transitions. [2023-12-20 19:50:05,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 19:50:05,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 782 [2023-12-20 19:50:05,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:50:06,035 INFO L225 Difference]: With dead ends: 155834 [2023-12-20 19:50:06,035 INFO L226 Difference]: Without dead ends: 108021 [2023-12-20 19:50:06,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 19:50:06,121 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 1117 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 19:50:06,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 2255 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 19:50:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108021 states. [2023-12-20 19:50:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108021 to 104001. [2023-12-20 19:50:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104001 states, 76688 states have (on average 1.5629433548925515) internal successors, (119859), 77132 states have internal predecessors, (119859), 26544 states have call successors, (26544), 768 states have call predecessors, (26544), 768 states have return successors, (26544), 26100 states have call predecessors, (26544), 26544 states have call successors, (26544) [2023-12-20 19:50:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104001 states to 104001 states and 172947 transitions. [2023-12-20 19:50:13,548 INFO L78 Accepts]: Start accepts. Automaton has 104001 states and 172947 transitions. Word has length 782 [2023-12-20 19:50:13,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:50:13,550 INFO L495 AbstractCegarLoop]: Abstraction has 104001 states and 172947 transitions. [2023-12-20 19:50:13,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:50:13,550 INFO L276 IsEmpty]: Start isEmpty. Operand 104001 states and 172947 transitions. [2023-12-20 19:50:13,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-12-20 19:50:13,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:50:13,596 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:50:13,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 19:50:13,804 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 [2023-12-20 19:50:13,804 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:50:13,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:50:13,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1505357250, now seen corresponding path program 1 times [2023-12-20 19:50:13,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:50:13,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750291353] [2023-12-20 19:50:13,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:50:13,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:50:13,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:50:13,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588992899] [2023-12-20 19:50:13,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:50:13,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:50:13,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:50:13,846 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) [2023-12-20 19:50:13,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 19:50:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:50:14,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 19:50:14,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:50:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-12-20 19:50:14,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:50:14,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:50:14,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750291353] [2023-12-20 19:50:14,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:50:14,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588992899] [2023-12-20 19:50:14,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588992899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:50:14,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:50:14,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 19:50:14,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484067870] [2023-12-20 19:50:14,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:50:14,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 19:50:14,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:50:14,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 19:50:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:50:14,421 INFO L87 Difference]: Start difference. First operand 104001 states and 172947 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:50:19,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:50:19,728 INFO L93 Difference]: Finished difference Result 214627 states and 356991 transitions. [2023-12-20 19:50:19,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 19:50:19,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 782 [2023-12-20 19:50:19,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:50:20,175 INFO L225 Difference]: With dead ends: 214627 [2023-12-20 19:50:20,175 INFO L226 Difference]: Without dead ends: 110627 [2023-12-20 19:50:20,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 19:50:20,309 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 346 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 19:50:20,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1169 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 19:50:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110627 states. [2023-12-20 19:50:25,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110627 to 80067. [2023-12-20 19:50:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80067 states, 65546 states have (on average 1.5998230250511092) internal successors, (104862), 65750 states have internal predecessors, (104862), 14064 states have call successors, (14064), 456 states have call predecessors, (14064), 456 states have return successors, (14064), 13860 states have call predecessors, (14064), 14064 states have call successors, (14064) [2023-12-20 19:50:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80067 states to 80067 states and 132990 transitions. [2023-12-20 19:50:25,640 INFO L78 Accepts]: Start accepts. Automaton has 80067 states and 132990 transitions. Word has length 782 [2023-12-20 19:50:25,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:50:25,641 INFO L495 AbstractCegarLoop]: Abstraction has 80067 states and 132990 transitions. [2023-12-20 19:50:25,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:50:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 80067 states and 132990 transitions. [2023-12-20 19:50:25,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-12-20 19:50:25,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:50:25,682 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:50:25,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 19:50:25,892 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 [2023-12-20 19:50:25,893 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:50:25,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:50:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash -170910148, now seen corresponding path program 1 times [2023-12-20 19:50:25,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:50:25,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206112911] [2023-12-20 19:50:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:50:25,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:50:26,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:50:26,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220792988] [2023-12-20 19:50:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:50:26,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:50:26,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:50:26,112 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) [2023-12-20 19:50:26,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 19:50:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:50:26,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 1747 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 19:50:26,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:50:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31500 trivial. 0 not checked. [2023-12-20 19:50:27,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 19:50:27,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:50:27,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206112911] [2023-12-20 19:50:27,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:50:27,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220792988] [2023-12-20 19:50:27,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220792988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 19:50:27,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 19:50:27,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 19:50:27,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035254079] [2023-12-20 19:50:27,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 19:50:27,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 19:50:27,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:50:27,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 19:50:27,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 19:50:27,457 INFO L87 Difference]: Start difference. First operand 80067 states and 132990 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:50:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:50:34,589 INFO L93 Difference]: Finished difference Result 216673 states and 359221 transitions. [2023-12-20 19:50:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 19:50:34,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) Word has length 782 [2023-12-20 19:50:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:50:34,863 INFO L225 Difference]: With dead ends: 216673 [2023-12-20 19:50:34,863 INFO L226 Difference]: Without dead ends: 134675 [2023-12-20 19:50:34,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 19:50:34,964 INFO L413 NwaCegarLoop]: 1125 mSDtfsCounter, 993 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 19:50:34,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 2746 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 19:50:35,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134675 states. [2023-12-20 19:50:41,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134675 to 123991. [2023-12-20 19:50:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123991 states, 99478 states have (on average 1.5889643941373972) internal successors, (158067), 99846 states have internal predecessors, (158067), 23776 states have call successors, (23776), 736 states have call predecessors, (23776), 736 states have return successors, (23776), 23408 states have call predecessors, (23776), 23776 states have call successors, (23776) [2023-12-20 19:50:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123991 states to 123991 states and 205619 transitions. [2023-12-20 19:50:42,483 INFO L78 Accepts]: Start accepts. Automaton has 123991 states and 205619 transitions. Word has length 782 [2023-12-20 19:50:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 19:50:42,485 INFO L495 AbstractCegarLoop]: Abstraction has 123991 states and 205619 transitions. [2023-12-20 19:50:42,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (126), 1 states have call predecessors, (126), 1 states have return successors, (126), 1 states have call predecessors, (126), 1 states have call successors, (126) [2023-12-20 19:50:42,486 INFO L276 IsEmpty]: Start isEmpty. Operand 123991 states and 205619 transitions. [2023-12-20 19:50:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-12-20 19:50:42,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 19:50:42,546 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 19:50:42,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 19:50:42,756 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 [2023-12-20 19:50:42,757 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 19:50:42,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 19:50:42,757 INFO L85 PathProgramCache]: Analyzing trace with hash 47944570, now seen corresponding path program 1 times [2023-12-20 19:50:42,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 19:50:42,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003286608] [2023-12-20 19:50:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:50:42,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 19:50:42,797 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 19:50:42,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973480101] [2023-12-20 19:50:42,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 19:50:42,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 19:50:42,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 19:50:42,812 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) [2023-12-20 19:50:42,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 19:50:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 19:50:43,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 19:50:43,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 19:50:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 15413 proven. 219 refuted. 0 times theorem prover too weak. 15868 trivial. 0 not checked. [2023-12-20 19:50:43,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 19:50:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 31500 backedges. 156 proven. 219 refuted. 0 times theorem prover too weak. 31125 trivial. 0 not checked. [2023-12-20 19:50:44,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 19:50:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003286608] [2023-12-20 19:50:44,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 19:50:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973480101] [2023-12-20 19:50:44,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973480101] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 19:50:44,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 19:50:44,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-20 19:50:44,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542786005] [2023-12-20 19:50:44,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 19:50:44,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 19:50:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 19:50:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 19:50:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-20 19:50:44,298 INFO L87 Difference]: Start difference. First operand 123991 states and 205619 transitions. Second operand has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 2 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (200), 2 states have call predecessors, (200), 2 states have call successors, (200) [2023-12-20 19:50:54,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 19:50:54,478 INFO L93 Difference]: Finished difference Result 250013 states and 411996 transitions. [2023-12-20 19:50:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 19:50:54,479 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 2 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (200), 2 states have call predecessors, (200), 2 states have call successors, (200) Word has length 782 [2023-12-20 19:50:54,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 19:50:55,136 INFO L225 Difference]: With dead ends: 250013 [2023-12-20 19:50:55,136 INFO L226 Difference]: Without dead ends: 220475 [2023-12-20 19:50:55,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1580 GetRequests, 1554 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2023-12-20 19:50:55,208 INFO L413 NwaCegarLoop]: 1193 mSDtfsCounter, 1531 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 2541 mSolverCounterSat, 891 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 3874 SdHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 2541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 19:50:55,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 3874 Invalid, 3432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [891 Valid, 2541 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 19:50:55,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220475 states. [2023-12-20 19:51:07,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220475 to 218135. [2023-12-20 19:51:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218135 states, 174486 states have (on average 1.5847575163623442) internal successors, (276518), 175094 states have internal predecessors, (276518), 42080 states have call successors, (42080), 1568 states have call predecessors, (42080), 1568 states have return successors, (42080), 41472 states have call predecessors, (42080), 42080 states have call successors, (42080)