/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-27.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:29:48,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:29:48,551 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:29:48,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:29:48,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:29:48,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:29:48,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:29:48,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:29:48,577 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:29:48,580 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:29:48,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:29:48,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:29:48,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:29:48,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:29:48,582 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:29:48,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:29:48,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:29:48,583 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:29:48,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:29:48,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:29:48,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:29:48,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:29:48,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:29:48,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:29:48,585 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:29:48,585 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:29:48,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:29:48,585 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:29:48,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:29:48,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:29:48,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:29:48,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:29:48,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:29:48,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:29:48,587 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:29:48,587 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:29:48,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:29:48,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:29:48,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:29:48,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:29:48,588 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:29:48,588 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:29:48,588 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:29:48,589 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:29:48,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:29:48,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:29:48,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:29:48,800 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:29:48,800 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:29:48,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-27.i [2023-12-15 21:29:50,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:29:50,313 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:29:50,313 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-27.i [2023-12-15 21:29:50,323 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71d1314a3/61c758a874de4dfc95385f90dc8caf7e/FLAG66d8e2d6e [2023-12-15 21:29:50,333 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71d1314a3/61c758a874de4dfc95385f90dc8caf7e [2023-12-15 21:29:50,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:29:50,338 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:29:50,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:29:50,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:29:50,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:29:50,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@958c2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50, skipping insertion in model container [2023-12-15 21:29:50,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,368 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:29:50,465 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_variablewrapping_wrapper-a_file-27.i[916,929] [2023-12-15 21:29:50,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:29:50,520 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:29:50,527 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_variablewrapping_wrapper-a_file-27.i[916,929] [2023-12-15 21:29:50,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:29:50,583 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:29:50,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50 WrapperNode [2023-12-15 21:29:50,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:29:50,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:29:50,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:29:50,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:29:50,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,631 INFO L138 Inliner]: procedures = 26, calls = 155, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 433 [2023-12-15 21:29:50,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:29:50,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:29:50,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:29:50,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:29:50,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,645 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,660 INFO L175 MemorySlicer]: Split 123 memory accesses to 5 slices as follows [2, 16, 70, 11, 24]. 57 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 2, 6, 1, 3]. The 16 writes are split as follows [0, 2, 8, 1, 5]. [2023-12-15 21:29:50,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,676 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:29:50,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:29:50,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:29:50,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:29:50,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (1/1) ... [2023-12-15 21:29:50,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:29:50,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:29:50,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:29:50,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:29:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:29:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 21:29:50,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 21:29:50,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 21:29:50,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-15 21:29:50,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-15 21:29:50,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 21:29:50,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 21:29:50,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 21:29:50,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-15 21:29:50,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-15 21:29:50,780 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:29:50,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:29:50,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:29:50,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 21:29:50,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 21:29:50,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-15 21:29:50,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-15 21:29:50,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:29:50,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:29:50,893 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:29:50,896 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:29:51,269 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:29:51,297 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:29:51,298 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:29:51,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:29:51 BoogieIcfgContainer [2023-12-15 21:29:51,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:29:51,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:29:51,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:29:51,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:29:51,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:29:50" (1/3) ... [2023-12-15 21:29:51,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ee5768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:29:51, skipping insertion in model container [2023-12-15 21:29:51,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:29:50" (2/3) ... [2023-12-15 21:29:51,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ee5768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:29:51, skipping insertion in model container [2023-12-15 21:29:51,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:29:51" (3/3) ... [2023-12-15 21:29:51,306 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-27.i [2023-12-15 21:29:51,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:29:51,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:29:51,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:29:51,390 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;@5ee0d754, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:29:51,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:29:51,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 68 states have internal predecessors, (95), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-15 21:29:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 21:29:51,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:29:51,413 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:29:51,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:29:51,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:29:51,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1965699129, now seen corresponding path program 1 times [2023-12-15 21:29:51,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:29:51,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282275353] [2023-12-15 21:29:51,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:29:51,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:29:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:29:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:29:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:29:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:29:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:29:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:29:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:29:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:29:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:29:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:29:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:29:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:29:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:29:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:29:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:29:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:29:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:29:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:51,771 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:29:51,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:29:51,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282275353] [2023-12-15 21:29:51,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282275353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:29:51,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:29:51,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:29:51,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018498476] [2023-12-15 21:29:51,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:29:51,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:29:51,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:29:51,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:29:51,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:29:51,822 INFO L87 Difference]: Start difference. First operand has 87 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 68 states have internal predecessors, (95), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:29:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:29:51,871 INFO L93 Difference]: Finished difference Result 171 states and 273 transitions. [2023-12-15 21:29:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:29:51,874 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2023-12-15 21:29:51,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:29:51,879 INFO L225 Difference]: With dead ends: 171 [2023-12-15 21:29:51,879 INFO L226 Difference]: Without dead ends: 85 [2023-12-15 21:29:51,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:29:51,885 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:29:51,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:29:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-15 21:29:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-12-15 21:29:51,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.3636363636363635) internal successors, (90), 66 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-15 21:29:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 124 transitions. [2023-12-15 21:29:51,925 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 124 transitions. Word has length 126 [2023-12-15 21:29:51,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:29:51,925 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 124 transitions. [2023-12-15 21:29:51,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:29:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 124 transitions. [2023-12-15 21:29:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 21:29:51,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:29:51,945 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:29:51,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 21:29:51,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:29:51,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:29:51,946 INFO L85 PathProgramCache]: Analyzing trace with hash 2096195045, now seen corresponding path program 1 times [2023-12-15 21:29:51,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:29:51,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913737925] [2023-12-15 21:29:51,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:29:51,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:29:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:29:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:29:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:29:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:29:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:29:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:29:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:29:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:29:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:29:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:29:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:29:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:29:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:29:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:29:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:29:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:29:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:29:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:29:52,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:29:52,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913737925] [2023-12-15 21:29:52,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913737925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:29:52,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:29:52,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:29:52,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397386840] [2023-12-15 21:29:52,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:29:52,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:29:52,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:29:52,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:29:52,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:29:52,919 INFO L87 Difference]: Start difference. First operand 85 states and 124 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:29:53,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:29:53,037 INFO L93 Difference]: Finished difference Result 222 states and 323 transitions. [2023-12-15 21:29:53,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:29:53,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2023-12-15 21:29:53,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:29:53,039 INFO L225 Difference]: With dead ends: 222 [2023-12-15 21:29:53,039 INFO L226 Difference]: Without dead ends: 138 [2023-12-15 21:29:53,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:29:53,040 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 72 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:29:53,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 526 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:29:53,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-15 21:29:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2023-12-15 21:29:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 113 states have (on average 1.407079646017699) internal successors, (159), 114 states have internal predecessors, (159), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-15 21:29:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 197 transitions. [2023-12-15 21:29:53,051 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 197 transitions. Word has length 126 [2023-12-15 21:29:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:29:53,051 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 197 transitions. [2023-12-15 21:29:53,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:29:53,051 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 197 transitions. [2023-12-15 21:29:53,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 21:29:53,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:29:53,053 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:29:53,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 21:29:53,053 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:29:53,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:29:53,053 INFO L85 PathProgramCache]: Analyzing trace with hash 102050339, now seen corresponding path program 1 times [2023-12-15 21:29:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:29:53,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774362257] [2023-12-15 21:29:53,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:29:53,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:29:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:29:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:29:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:29:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:29:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:29:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:29:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:29:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:29:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:29:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:29:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:29:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:29:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:29:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:29:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:29:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:29:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:29:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:29:53,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:29:53,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774362257] [2023-12-15 21:29:53,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774362257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:29:53,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:29:53,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:29:53,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519245817] [2023-12-15 21:29:53,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:29:53,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:29:53,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:29:53,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:29:53,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:29:53,419 INFO L87 Difference]: Start difference. First operand 135 states and 197 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:29:53,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:29:53,526 INFO L93 Difference]: Finished difference Result 403 states and 589 transitions. [2023-12-15 21:29:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:29:53,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2023-12-15 21:29:53,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:29:53,533 INFO L225 Difference]: With dead ends: 403 [2023-12-15 21:29:53,533 INFO L226 Difference]: Without dead ends: 269 [2023-12-15 21:29:53,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:29:53,539 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 91 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:29:53,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 348 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:29:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-15 21:29:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 263. [2023-12-15 21:29:53,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 220 states have (on average 1.4) internal successors, (308), 222 states have internal predecessors, (308), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 21:29:53,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 384 transitions. [2023-12-15 21:29:53,572 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 384 transitions. Word has length 126 [2023-12-15 21:29:53,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:29:53,573 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 384 transitions. [2023-12-15 21:29:53,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:29:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 384 transitions. [2023-12-15 21:29:53,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-15 21:29:53,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:29:53,574 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:29:53,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 21:29:53,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:29:53,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:29:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1877340327, now seen corresponding path program 1 times [2023-12-15 21:29:53,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:29:53,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963166127] [2023-12-15 21:29:53,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:29:53,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:29:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:29:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:29:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:29:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:29:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:29:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:29:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:29:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:29:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:29:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:29:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:29:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:29:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:29:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:29:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:29:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:29:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:29:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:53,933 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:29:53,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:29:53,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963166127] [2023-12-15 21:29:53,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963166127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:29:53,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:29:53,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:29:53,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952600092] [2023-12-15 21:29:53,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:29:53,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:29:53,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:29:53,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:29:53,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:29:53,936 INFO L87 Difference]: Start difference. First operand 263 states and 384 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:29:54,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:29:54,078 INFO L93 Difference]: Finished difference Result 633 states and 914 transitions. [2023-12-15 21:29:54,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:29:54,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 126 [2023-12-15 21:29:54,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:29:54,082 INFO L225 Difference]: With dead ends: 633 [2023-12-15 21:29:54,082 INFO L226 Difference]: Without dead ends: 371 [2023-12-15 21:29:54,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:29:54,088 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 65 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:29:54,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 710 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:29:54,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-12-15 21:29:54,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 205. [2023-12-15 21:29:54,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 166 states have (on average 1.3493975903614457) internal successors, (224), 166 states have internal predecessors, (224), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 21:29:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 292 transitions. [2023-12-15 21:29:54,115 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 292 transitions. Word has length 126 [2023-12-15 21:29:54,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:29:54,117 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 292 transitions. [2023-12-15 21:29:54,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:29:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 292 transitions. [2023-12-15 21:29:54,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-15 21:29:54,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:29:54,122 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:29:54,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 21:29:54,123 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:29:54,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:29:54,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2139719341, now seen corresponding path program 1 times [2023-12-15 21:29:54,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:29:54,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295916254] [2023-12-15 21:29:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:29:54,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:29:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:29:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:29:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:29:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:29:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:29:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:29:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:29:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:29:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:29:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:29:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:29:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:29:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:29:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:29:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:29:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:29:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:29:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:29:55,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:29:55,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295916254] [2023-12-15 21:29:55,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295916254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:29:55,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:29:55,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:29:55,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558751957] [2023-12-15 21:29:55,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:29:55,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:29:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:29:55,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:29:55,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:29:55,064 INFO L87 Difference]: Start difference. First operand 205 states and 292 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:29:55,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:29:55,339 INFO L93 Difference]: Finished difference Result 390 states and 554 transitions. [2023-12-15 21:29:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:29:55,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 127 [2023-12-15 21:29:55,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:29:55,341 INFO L225 Difference]: With dead ends: 390 [2023-12-15 21:29:55,341 INFO L226 Difference]: Without dead ends: 285 [2023-12-15 21:29:55,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:29:55,343 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 112 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:29:55,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 797 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:29:55,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-15 21:29:55,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 263. [2023-12-15 21:29:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 216 states have (on average 1.3518518518518519) internal successors, (292), 217 states have internal predecessors, (292), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 21:29:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 372 transitions. [2023-12-15 21:29:55,358 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 372 transitions. Word has length 127 [2023-12-15 21:29:55,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:29:55,359 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 372 transitions. [2023-12-15 21:29:55,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:29:55,359 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 372 transitions. [2023-12-15 21:29:55,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:29:55,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:29:55,361 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:29:55,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 21:29:55,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:29:55,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:29:55,361 INFO L85 PathProgramCache]: Analyzing trace with hash -626412120, now seen corresponding path program 1 times [2023-12-15 21:29:55,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:29:55,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507520993] [2023-12-15 21:29:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:29:55,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:29:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:29:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:29:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:29:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:29:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:29:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:29:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:29:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:29:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:29:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:29:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:29:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:29:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:29:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:29:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:29:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:29:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:29:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:29:55,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:29:55,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507520993] [2023-12-15 21:29:55,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507520993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:29:55,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:29:55,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:29:55,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832150380] [2023-12-15 21:29:55,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:29:55,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:29:55,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:29:55,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:29:55,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:29:55,707 INFO L87 Difference]: Start difference. First operand 263 states and 372 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:29:55,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:29:55,817 INFO L93 Difference]: Finished difference Result 531 states and 750 transitions. [2023-12-15 21:29:55,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:29:55,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2023-12-15 21:29:55,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:29:55,820 INFO L225 Difference]: With dead ends: 531 [2023-12-15 21:29:55,820 INFO L226 Difference]: Without dead ends: 269 [2023-12-15 21:29:55,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:29:55,821 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 106 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:29:55,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 325 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:29:55,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-15 21:29:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 263. [2023-12-15 21:29:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 216 states have (on average 1.3472222222222223) internal successors, (291), 217 states have internal predecessors, (291), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 21:29:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 371 transitions. [2023-12-15 21:29:55,838 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 371 transitions. Word has length 128 [2023-12-15 21:29:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:29:55,838 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 371 transitions. [2023-12-15 21:29:55,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:29:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 371 transitions. [2023-12-15 21:29:55,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-15 21:29:55,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:29:55,839 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:29:55,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 21:29:55,840 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:29:55,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:29:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1682473688, now seen corresponding path program 1 times [2023-12-15 21:29:55,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:29:55,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772562780] [2023-12-15 21:29:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:29:55,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:29:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:29:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:29:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:29:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:29:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:29:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:29:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:29:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:29:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:29:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:29:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:29:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:29:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:29:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:29:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:29:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:29:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:29:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:29:56,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:29:56,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772562780] [2023-12-15 21:29:56,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772562780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:29:56,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:29:56,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:29:56,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365846581] [2023-12-15 21:29:56,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:29:56,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:29:56,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:29:56,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:29:56,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:29:56,082 INFO L87 Difference]: Start difference. First operand 263 states and 371 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:29:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:29:56,274 INFO L93 Difference]: Finished difference Result 546 states and 774 transitions. [2023-12-15 21:29:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:29:56,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 129 [2023-12-15 21:29:56,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:29:56,277 INFO L225 Difference]: With dead ends: 546 [2023-12-15 21:29:56,277 INFO L226 Difference]: Without dead ends: 383 [2023-12-15 21:29:56,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:29:56,278 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 165 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:29:56,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 546 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:29:56,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-15 21:29:56,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 356. [2023-12-15 21:29:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 290 states have (on average 1.3413793103448275) internal successors, (389), 291 states have internal predecessors, (389), 57 states have call successors, (57), 8 states have call predecessors, (57), 8 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-15 21:29:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 503 transitions. [2023-12-15 21:29:56,296 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 503 transitions. Word has length 129 [2023-12-15 21:29:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:29:56,296 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 503 transitions. [2023-12-15 21:29:56,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:29:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 503 transitions. [2023-12-15 21:29:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-15 21:29:56,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:29:56,311 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:29:56,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 21:29:56,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:29:56,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:29:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1106507992, now seen corresponding path program 1 times [2023-12-15 21:29:56,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:29:56,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500119808] [2023-12-15 21:29:56,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:29:56,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:29:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:29:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:29:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:29:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:29:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:29:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:29:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:29:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:29:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:29:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:29:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:29:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:29:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:29:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:29:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:29:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:29:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:29:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:29:56,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:29:56,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500119808] [2023-12-15 21:29:56,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500119808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:29:56,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:29:56,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:29:56,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87548276] [2023-12-15 21:29:56,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:29:56,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:29:56,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:29:56,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:29:56,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:29:56,510 INFO L87 Difference]: Start difference. First operand 356 states and 503 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:29:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:29:56,673 INFO L93 Difference]: Finished difference Result 594 states and 837 transitions. [2023-12-15 21:29:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:29:56,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 129 [2023-12-15 21:29:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:29:56,675 INFO L225 Difference]: With dead ends: 594 [2023-12-15 21:29:56,675 INFO L226 Difference]: Without dead ends: 312 [2023-12-15 21:29:56,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:29:56,676 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 155 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:29:56,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 325 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:29:56,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-15 21:29:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 207. [2023-12-15 21:29:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 167 states have (on average 1.311377245508982) internal successors, (219), 167 states have internal predecessors, (219), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 21:29:56,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 287 transitions. [2023-12-15 21:29:56,686 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 287 transitions. Word has length 129 [2023-12-15 21:29:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:29:56,686 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 287 transitions. [2023-12-15 21:29:56,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:29:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 287 transitions. [2023-12-15 21:29:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:29:56,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:29:56,687 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:29:56,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 21:29:56,687 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:29:56,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:29:56,687 INFO L85 PathProgramCache]: Analyzing trace with hash -23200275, now seen corresponding path program 1 times [2023-12-15 21:29:56,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:29:56,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586375896] [2023-12-15 21:29:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:29:56,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:29:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:29:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:29:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:29:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:29:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:29:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:29:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:29:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:29:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:29:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:29:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:29:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:29:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:29:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:29:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:29:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:29:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:29:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:29:57,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:29:57,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586375896] [2023-12-15 21:29:57,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586375896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:29:57,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:29:57,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:29:57,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854644335] [2023-12-15 21:29:57,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:29:57,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:29:57,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:29:57,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:29:57,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:29:57,465 INFO L87 Difference]: Start difference. First operand 207 states and 287 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:29:57,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:29:57,880 INFO L93 Difference]: Finished difference Result 496 states and 687 transitions. [2023-12-15 21:29:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:29:57,881 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-15 21:29:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:29:57,882 INFO L225 Difference]: With dead ends: 496 [2023-12-15 21:29:57,882 INFO L226 Difference]: Without dead ends: 290 [2023-12-15 21:29:57,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:29:57,884 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 182 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:29:57,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1066 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:29:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-12-15 21:29:57,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 268. [2023-12-15 21:29:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 220 states have (on average 1.3136363636363637) internal successors, (289), 221 states have internal predecessors, (289), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 21:29:57,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 369 transitions. [2023-12-15 21:29:57,896 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 369 transitions. Word has length 130 [2023-12-15 21:29:57,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:29:57,897 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 369 transitions. [2023-12-15 21:29:57,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:29:57,897 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 369 transitions. [2023-12-15 21:29:57,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:29:57,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:29:57,898 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:29:57,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 21:29:57,898 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:29:57,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:29:57,899 INFO L85 PathProgramCache]: Analyzing trace with hash 677864303, now seen corresponding path program 1 times [2023-12-15 21:29:57,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:29:57,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834777935] [2023-12-15 21:29:57,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:29:57,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:29:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:29:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:29:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:29:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:29:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:29:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:29:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:29:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:29:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:29:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:29:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:29:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:29:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:29:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:29:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:29:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:29:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:29:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:29:58,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:29:58,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834777935] [2023-12-15 21:29:58,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834777935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:29:58,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:29:58,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 21:29:58,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428363798] [2023-12-15 21:29:58,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:29:58,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:29:58,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:29:58,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:29:58,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:29:58,451 INFO L87 Difference]: Start difference. First operand 268 states and 369 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:29:58,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:29:58,670 INFO L93 Difference]: Finished difference Result 560 states and 770 transitions. [2023-12-15 21:29:58,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:29:58,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-12-15 21:29:58,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:29:58,672 INFO L225 Difference]: With dead ends: 560 [2023-12-15 21:29:58,672 INFO L226 Difference]: Without dead ends: 293 [2023-12-15 21:29:58,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:29:58,673 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 102 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:29:58,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 768 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:29:58,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-15 21:29:58,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 269. [2023-12-15 21:29:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 220 states have (on average 1.3045454545454545) internal successors, (287), 221 states have internal predecessors, (287), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 21:29:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 367 transitions. [2023-12-15 21:29:58,687 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 367 transitions. Word has length 130 [2023-12-15 21:29:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:29:58,689 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 367 transitions. [2023-12-15 21:29:58,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:29:58,690 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 367 transitions. [2023-12-15 21:29:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:29:58,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:29:58,691 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:29:58,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 21:29:58,691 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:29:58,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:29:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1712144017, now seen corresponding path program 1 times [2023-12-15 21:29:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:29:58,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093490450] [2023-12-15 21:29:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:29:58,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:29:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:29:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:29:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:29:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:29:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:29:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:29:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:29:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:29:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:29:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:29:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:29:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:29:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:29:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:29:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:29:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:29:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:29:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:29:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:29:59,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:29:59,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093490450] [2023-12-15 21:29:59,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093490450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:29:59,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:29:59,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:29:59,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300036396] [2023-12-15 21:29:59,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:29:59,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:29:59,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:29:59,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:29:59,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:29:59,226 INFO L87 Difference]: Start difference. First operand 269 states and 367 transitions. Second operand has 10 states, 7 states have (on average 6.857142857142857) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-15 21:29:59,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:29:59,485 INFO L93 Difference]: Finished difference Result 543 states and 737 transitions. [2023-12-15 21:29:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:29:59,487 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 6.857142857142857) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 4 states have call successors, (17) Word has length 130 [2023-12-15 21:29:59,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:29:59,490 INFO L225 Difference]: With dead ends: 543 [2023-12-15 21:29:59,490 INFO L226 Difference]: Without dead ends: 275 [2023-12-15 21:29:59,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:29:59,491 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 95 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:29:59,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 745 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:29:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-15 21:29:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 273. [2023-12-15 21:29:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 223 states have (on average 1.295964125560538) internal successors, (289), 224 states have internal predecessors, (289), 40 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 21:29:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 369 transitions. [2023-12-15 21:29:59,507 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 369 transitions. Word has length 130 [2023-12-15 21:29:59,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:29:59,507 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 369 transitions. [2023-12-15 21:29:59,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 6.857142857142857) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-15 21:29:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 369 transitions. [2023-12-15 21:29:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:29:59,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:29:59,509 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:29:59,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 21:29:59,509 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:29:59,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:29:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1011079439, now seen corresponding path program 1 times [2023-12-15 21:29:59,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:29:59,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298415925] [2023-12-15 21:29:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:29:59,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:29:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:30:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:30:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:30:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:30:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:30:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:30:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:30:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:30:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:30:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:30:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:30:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:30:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:30:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:30:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:30:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:30:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:30:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:00,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298415925] [2023-12-15 21:30:00,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298415925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:00,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:00,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:30:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750697427] [2023-12-15 21:30:00,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:00,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:30:00,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:00,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:30:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:30:00,063 INFO L87 Difference]: Start difference. First operand 273 states and 369 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:00,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:00,356 INFO L93 Difference]: Finished difference Result 564 states and 757 transitions. [2023-12-15 21:30:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:30:00,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-15 21:30:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:00,358 INFO L225 Difference]: With dead ends: 564 [2023-12-15 21:30:00,358 INFO L226 Difference]: Without dead ends: 292 [2023-12-15 21:30:00,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:30:00,359 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 156 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:00,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1091 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:30:00,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-15 21:30:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 273. [2023-12-15 21:30:00,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 223 states have (on average 1.2914798206278026) internal successors, (288), 224 states have internal predecessors, (288), 40 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 21:30:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 368 transitions. [2023-12-15 21:30:00,376 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 368 transitions. Word has length 130 [2023-12-15 21:30:00,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:00,376 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 368 transitions. [2023-12-15 21:30:00,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:00,377 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 368 transitions. [2023-12-15 21:30:00,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:30:00,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:00,377 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:00,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 21:30:00,378 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:00,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:00,378 INFO L85 PathProgramCache]: Analyzing trace with hash 327502817, now seen corresponding path program 1 times [2023-12-15 21:30:00,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:00,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641665336] [2023-12-15 21:30:00,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:00,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:30:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:30:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:30:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:30:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:30:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:30:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:30:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:30:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:30:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:30:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:30:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:30:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:30:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:30:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:30:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:30:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:30:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:00,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:00,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641665336] [2023-12-15 21:30:00,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641665336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:00,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:00,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:30:00,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52036549] [2023-12-15 21:30:00,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:00,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:30:00,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:00,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:30:00,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:30:00,598 INFO L87 Difference]: Start difference. First operand 273 states and 368 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:30:00,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:00,676 INFO L93 Difference]: Finished difference Result 781 states and 1063 transitions. [2023-12-15 21:30:00,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:30:00,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-12-15 21:30:00,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:00,678 INFO L225 Difference]: With dead ends: 781 [2023-12-15 21:30:00,678 INFO L226 Difference]: Without dead ends: 509 [2023-12-15 21:30:00,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:00,679 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 106 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:00,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 631 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:00,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-12-15 21:30:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 318. [2023-12-15 21:30:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 268 states have (on average 1.2761194029850746) internal successors, (342), 269 states have internal predecessors, (342), 40 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 21:30:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 422 transitions. [2023-12-15 21:30:00,692 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 422 transitions. Word has length 130 [2023-12-15 21:30:00,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:00,692 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 422 transitions. [2023-12-15 21:30:00,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:30:00,692 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 422 transitions. [2023-12-15 21:30:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:30:00,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:00,693 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:00,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 21:30:00,693 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:00,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:00,694 INFO L85 PathProgramCache]: Analyzing trace with hash -65524193, now seen corresponding path program 1 times [2023-12-15 21:30:00,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:00,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334714075] [2023-12-15 21:30:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:00,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:30:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:30:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:30:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:30:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:30:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:30:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:30:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:30:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:30:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:30:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:30:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:30:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:30:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:30:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:30:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:30:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:30:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:01,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:01,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334714075] [2023-12-15 21:30:01,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334714075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:01,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:01,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 21:30:01,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555209758] [2023-12-15 21:30:01,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:01,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:30:01,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:01,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:30:01,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:30:01,244 INFO L87 Difference]: Start difference. First operand 318 states and 422 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:30:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:01,586 INFO L93 Difference]: Finished difference Result 881 states and 1169 transitions. [2023-12-15 21:30:01,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:30:01,587 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-12-15 21:30:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:01,589 INFO L225 Difference]: With dead ends: 881 [2023-12-15 21:30:01,589 INFO L226 Difference]: Without dead ends: 564 [2023-12-15 21:30:01,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:30:01,590 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 185 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:01,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 697 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:30:01,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-12-15 21:30:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 518. [2023-12-15 21:30:01,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 437 states have (on average 1.263157894736842) internal successors, (552), 441 states have internal predecessors, (552), 62 states have call successors, (62), 18 states have call predecessors, (62), 18 states have return successors, (62), 58 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-15 21:30:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 676 transitions. [2023-12-15 21:30:01,619 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 676 transitions. Word has length 130 [2023-12-15 21:30:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:01,620 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 676 transitions. [2023-12-15 21:30:01,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:30:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 676 transitions. [2023-12-15 21:30:01,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 21:30:01,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:01,622 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:01,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 21:30:01,622 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:01,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:01,622 INFO L85 PathProgramCache]: Analyzing trace with hash 75024417, now seen corresponding path program 1 times [2023-12-15 21:30:01,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:01,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996730370] [2023-12-15 21:30:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:01,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:30:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:30:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:30:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:30:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:30:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:30:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:30:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:30:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:30:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:30:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:30:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:30:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:30:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:30:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:30:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:30:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:30:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:01,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:01,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996730370] [2023-12-15 21:30:01,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996730370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:01,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:01,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:01,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188923833] [2023-12-15 21:30:01,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:01,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:01,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:01,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:01,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:01,774 INFO L87 Difference]: Start difference. First operand 518 states and 676 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:01,837 INFO L93 Difference]: Finished difference Result 1080 states and 1413 transitions. [2023-12-15 21:30:01,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:30:01,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 130 [2023-12-15 21:30:01,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:01,839 INFO L225 Difference]: With dead ends: 1080 [2023-12-15 21:30:01,839 INFO L226 Difference]: Without dead ends: 563 [2023-12-15 21:30:01,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:30:01,841 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 113 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:01,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 455 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-12-15 21:30:01,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 509. [2023-12-15 21:30:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 428 states have (on average 1.2546728971962617) internal successors, (537), 432 states have internal predecessors, (537), 62 states have call successors, (62), 18 states have call predecessors, (62), 18 states have return successors, (62), 58 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-15 21:30:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 661 transitions. [2023-12-15 21:30:01,865 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 661 transitions. Word has length 130 [2023-12-15 21:30:01,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:01,866 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 661 transitions. [2023-12-15 21:30:01,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 661 transitions. [2023-12-15 21:30:01,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:30:01,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:01,867 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:01,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 21:30:01,868 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:01,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:01,868 INFO L85 PathProgramCache]: Analyzing trace with hash -458096856, now seen corresponding path program 1 times [2023-12-15 21:30:01,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:01,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925329891] [2023-12-15 21:30:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:01,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:30:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:30:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:30:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:30:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:30:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:30:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:30:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:30:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:30:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:30:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:30:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:30:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:30:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:30:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:30:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:30:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:30:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:02,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:02,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925329891] [2023-12-15 21:30:02,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925329891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:02,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:02,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:30:02,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102394949] [2023-12-15 21:30:02,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:02,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:30:02,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:02,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:30:02,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:30:02,125 INFO L87 Difference]: Start difference. First operand 509 states and 661 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:02,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:02,305 INFO L93 Difference]: Finished difference Result 1531 states and 1991 transitions. [2023-12-15 21:30:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:30:02,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:30:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:02,309 INFO L225 Difference]: With dead ends: 1531 [2023-12-15 21:30:02,309 INFO L226 Difference]: Without dead ends: 1023 [2023-12-15 21:30:02,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:30:02,312 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 101 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:02,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 416 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:02,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2023-12-15 21:30:02,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 659. [2023-12-15 21:30:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 578 states have (on average 1.2629757785467128) internal successors, (730), 582 states have internal predecessors, (730), 62 states have call successors, (62), 18 states have call predecessors, (62), 18 states have return successors, (62), 58 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-15 21:30:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 854 transitions. [2023-12-15 21:30:02,344 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 854 transitions. Word has length 134 [2023-12-15 21:30:02,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:02,344 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 854 transitions. [2023-12-15 21:30:02,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:02,345 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 854 transitions. [2023-12-15 21:30:02,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:30:02,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:02,346 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:02,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 21:30:02,346 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:02,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:02,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1267443482, now seen corresponding path program 1 times [2023-12-15 21:30:02,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:02,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956522682] [2023-12-15 21:30:02,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:02,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:30:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:30:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:30:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:30:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:30:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:30:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:30:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:30:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:30:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:30:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:30:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:30:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:30:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:30:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:30:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:30:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:30:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:02,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:02,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956522682] [2023-12-15 21:30:02,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956522682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:02,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:02,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 21:30:02,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46360633] [2023-12-15 21:30:02,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:02,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:30:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:02,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:30:02,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:30:02,954 INFO L87 Difference]: Start difference. First operand 659 states and 854 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:03,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:03,382 INFO L93 Difference]: Finished difference Result 1503 states and 1946 transitions. [2023-12-15 21:30:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 21:30:03,383 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:30:03,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:03,385 INFO L225 Difference]: With dead ends: 1503 [2023-12-15 21:30:03,385 INFO L226 Difference]: Without dead ends: 845 [2023-12-15 21:30:03,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:30:03,387 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 155 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:03,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1000 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:30:03,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-15 21:30:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 675. [2023-12-15 21:30:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 594 states have (on average 1.2558922558922558) internal successors, (746), 598 states have internal predecessors, (746), 62 states have call successors, (62), 18 states have call predecessors, (62), 18 states have return successors, (62), 58 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-15 21:30:03,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 870 transitions. [2023-12-15 21:30:03,433 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 870 transitions. Word has length 134 [2023-12-15 21:30:03,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:03,433 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 870 transitions. [2023-12-15 21:30:03,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:03,433 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 870 transitions. [2023-12-15 21:30:03,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:30:03,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:03,435 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:03,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 21:30:03,435 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:03,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:03,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1642295471, now seen corresponding path program 1 times [2023-12-15 21:30:03,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:03,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424108994] [2023-12-15 21:30:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:30:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:30:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:30:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:30:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:30:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:30:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:30:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:30:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:30:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:30:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:30:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:30:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:30:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:30:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:30:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:30:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:30:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:03,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:03,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424108994] [2023-12-15 21:30:03,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424108994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:03,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:03,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:30:03,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751250781] [2023-12-15 21:30:03,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:03,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:30:03,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:03,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:30:03,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:30:03,640 INFO L87 Difference]: Start difference. First operand 675 states and 870 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:30:03,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:03,739 INFO L93 Difference]: Finished difference Result 1542 states and 2001 transitions. [2023-12-15 21:30:03,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:30:03,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 134 [2023-12-15 21:30:03,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:03,741 INFO L225 Difference]: With dead ends: 1542 [2023-12-15 21:30:03,742 INFO L226 Difference]: Without dead ends: 868 [2023-12-15 21:30:03,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:03,743 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 79 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:03,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 581 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2023-12-15 21:30:03,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 703. [2023-12-15 21:30:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 622 states have (on average 1.2556270096463023) internal successors, (781), 626 states have internal predecessors, (781), 62 states have call successors, (62), 18 states have call predecessors, (62), 18 states have return successors, (62), 58 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-15 21:30:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 905 transitions. [2023-12-15 21:30:03,776 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 905 transitions. Word has length 134 [2023-12-15 21:30:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:03,776 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 905 transitions. [2023-12-15 21:30:03,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:30:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 905 transitions. [2023-12-15 21:30:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:30:03,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:03,778 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:03,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 21:30:03,778 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:03,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:03,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1843325199, now seen corresponding path program 1 times [2023-12-15 21:30:03,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:03,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887827447] [2023-12-15 21:30:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:03,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:30:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:30:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:30:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:30:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:30:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:30:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:30:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:30:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:30:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:30:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:30:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:30:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:30:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:30:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:30:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:30:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:30:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:03,881 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:03,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:03,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887827447] [2023-12-15 21:30:03,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887827447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:03,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:03,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:30:03,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751225975] [2023-12-15 21:30:03,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:03,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:30:03,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:03,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:30:03,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:30:03,883 INFO L87 Difference]: Start difference. First operand 703 states and 905 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:03,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:03,949 INFO L93 Difference]: Finished difference Result 1462 states and 1890 transitions. [2023-12-15 21:30:03,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:30:03,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:30:03,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:03,951 INFO L225 Difference]: With dead ends: 1462 [2023-12-15 21:30:03,952 INFO L226 Difference]: Without dead ends: 760 [2023-12-15 21:30:03,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:30:03,953 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 49 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:03,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 563 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:03,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-12-15 21:30:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 712. [2023-12-15 21:30:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 631 states have (on average 1.2519809825673534) internal successors, (790), 635 states have internal predecessors, (790), 62 states have call successors, (62), 18 states have call predecessors, (62), 18 states have return successors, (62), 58 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-15 21:30:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 914 transitions. [2023-12-15 21:30:03,984 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 914 transitions. Word has length 134 [2023-12-15 21:30:03,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:03,984 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 914 transitions. [2023-12-15 21:30:03,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 914 transitions. [2023-12-15 21:30:03,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:30:03,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:03,985 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:03,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 21:30:03,986 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:03,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:03,986 INFO L85 PathProgramCache]: Analyzing trace with hash -520136470, now seen corresponding path program 1 times [2023-12-15 21:30:03,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:03,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282137831] [2023-12-15 21:30:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:03,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:30:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:30:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:30:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:30:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:30:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:30:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:30:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:30:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:30:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:30:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:30:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:30:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:30:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:30:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:30:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:30:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:30:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:04,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:04,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282137831] [2023-12-15 21:30:04,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282137831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:04,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:04,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:30:04,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117825199] [2023-12-15 21:30:04,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:04,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:30:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:30:04,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:30:04,431 INFO L87 Difference]: Start difference. First operand 712 states and 914 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:05,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:05,017 INFO L93 Difference]: Finished difference Result 2007 states and 2558 transitions. [2023-12-15 21:30:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 21:30:05,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:30:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:05,020 INFO L225 Difference]: With dead ends: 2007 [2023-12-15 21:30:05,020 INFO L226 Difference]: Without dead ends: 1296 [2023-12-15 21:30:05,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:30:05,022 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 391 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:05,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1082 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:30:05,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2023-12-15 21:30:05,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 807. [2023-12-15 21:30:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 726 states have (on average 1.2603305785123966) internal successors, (915), 730 states have internal predecessors, (915), 62 states have call successors, (62), 18 states have call predecessors, (62), 18 states have return successors, (62), 58 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-15 21:30:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1039 transitions. [2023-12-15 21:30:05,071 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1039 transitions. Word has length 134 [2023-12-15 21:30:05,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:05,072 INFO L495 AbstractCegarLoop]: Abstraction has 807 states and 1039 transitions. [2023-12-15 21:30:05,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1039 transitions. [2023-12-15 21:30:05,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:30:05,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:05,073 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:05,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 21:30:05,073 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:05,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:05,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1329483096, now seen corresponding path program 1 times [2023-12-15 21:30:05,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:05,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527597419] [2023-12-15 21:30:05,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:05,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:30:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:30:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:30:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:30:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:30:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:30:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:30:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:30:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:30:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:30:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:30:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:30:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:30:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:30:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:30:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:30:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:30:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:05,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527597419] [2023-12-15 21:30:05,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527597419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:05,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:05,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:30:05,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006693185] [2023-12-15 21:30:05,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:05,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:30:05,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:05,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:30:05,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:30:05,320 INFO L87 Difference]: Start difference. First operand 807 states and 1039 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:05,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:05,529 INFO L93 Difference]: Finished difference Result 1913 states and 2464 transitions. [2023-12-15 21:30:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:30:05,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:30:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:05,532 INFO L225 Difference]: With dead ends: 1913 [2023-12-15 21:30:05,532 INFO L226 Difference]: Without dead ends: 1106 [2023-12-15 21:30:05,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:30:05,534 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 89 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:05,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 645 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2023-12-15 21:30:05,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 894. [2023-12-15 21:30:05,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 813 states have (on average 1.2583025830258303) internal successors, (1023), 817 states have internal predecessors, (1023), 62 states have call successors, (62), 18 states have call predecessors, (62), 18 states have return successors, (62), 58 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-15 21:30:05,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1147 transitions. [2023-12-15 21:30:05,573 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1147 transitions. Word has length 134 [2023-12-15 21:30:05,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:05,573 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1147 transitions. [2023-12-15 21:30:05,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:05,574 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1147 transitions. [2023-12-15 21:30:05,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:30:05,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:05,575 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:05,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 21:30:05,575 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:05,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:05,575 INFO L85 PathProgramCache]: Analyzing trace with hash -97434644, now seen corresponding path program 1 times [2023-12-15 21:30:05,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:05,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392153572] [2023-12-15 21:30:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:05,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:30:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:30:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:30:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:30:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:30:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:30:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:30:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:30:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:30:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:30:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:30:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:30:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:30:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:30:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:30:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:30:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:30:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-15 21:30:05,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:05,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392153572] [2023-12-15 21:30:05,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392153572] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:30:05,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746990942] [2023-12-15 21:30:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:05,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:05,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:05,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:05,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:30:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:06,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-15 21:30:06,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:06,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-12-15 21:30:06,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:06,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 42 [2023-12-15 21:30:06,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:06,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 19 [2023-12-15 21:30:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-15 21:30:06,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:30:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:06,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746990942] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:30:06,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:30:06,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7, 15] total 24 [2023-12-15 21:30:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45748681] [2023-12-15 21:30:06,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:06,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:30:06,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:06,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:30:06,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-12-15 21:30:06,566 INFO L87 Difference]: Start difference. First operand 894 states and 1147 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:07,067 INFO L93 Difference]: Finished difference Result 1987 states and 2536 transitions. [2023-12-15 21:30:07,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 21:30:07,068 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:30:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:07,070 INFO L225 Difference]: With dead ends: 1987 [2023-12-15 21:30:07,070 INFO L226 Difference]: Without dead ends: 1094 [2023-12-15 21:30:07,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2023-12-15 21:30:07,073 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 205 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:07,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1370 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:30:07,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2023-12-15 21:30:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 940. [2023-12-15 21:30:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 847 states have (on average 1.2538370720188903) internal successors, (1062), 852 states have internal predecessors, (1062), 70 states have call successors, (70), 22 states have call predecessors, (70), 22 states have return successors, (70), 65 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-15 21:30:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1202 transitions. [2023-12-15 21:30:07,116 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1202 transitions. Word has length 134 [2023-12-15 21:30:07,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:07,116 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1202 transitions. [2023-12-15 21:30:07,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1202 transitions. [2023-12-15 21:30:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:30:07,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:07,117 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:07,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:07,323 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,SelfDestructingSolverStorable21 [2023-12-15 21:30:07,323 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:07,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:07,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1290327162, now seen corresponding path program 1 times [2023-12-15 21:30:07,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:07,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961194068] [2023-12-15 21:30:07,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:07,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:07,344 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:07,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969840388] [2023-12-15 21:30:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:07,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:07,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:07,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:07,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:30:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:07,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-15 21:30:07,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:07,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:07,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-12-15 21:30:07,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-15 21:30:07,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-15 21:30:07,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:07,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-15 21:30:07,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:07,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 18 [2023-12-15 21:30:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 288 proven. 24 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-15 21:30:07,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:30:08,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:08,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 1 [2023-12-15 21:30:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-15 21:30:08,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:08,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961194068] [2023-12-15 21:30:08,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:08,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969840388] [2023-12-15 21:30:08,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969840388] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:30:08,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:30:08,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-15 21:30:08,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446380288] [2023-12-15 21:30:08,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:30:08,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-15 21:30:08,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:08,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-15 21:30:08,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2023-12-15 21:30:08,172 INFO L87 Difference]: Start difference. First operand 940 states and 1202 transitions. Second operand has 24 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 24 states have internal predecessors, (94), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 3 states have call predecessors, (26), 5 states have call successors, (26) [2023-12-15 21:30:09,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:09,081 INFO L93 Difference]: Finished difference Result 2244 states and 2841 transitions. [2023-12-15 21:30:09,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 21:30:09,081 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 24 states have internal predecessors, (94), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 3 states have call predecessors, (26), 5 states have call successors, (26) Word has length 134 [2023-12-15 21:30:09,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:09,085 INFO L225 Difference]: With dead ends: 2244 [2023-12-15 21:30:09,085 INFO L226 Difference]: Without dead ends: 1305 [2023-12-15 21:30:09,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=469, Invalid=1511, Unknown=0, NotChecked=0, Total=1980 [2023-12-15 21:30:09,087 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 486 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:09,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 719 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:30:09,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-12-15 21:30:09,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 991. [2023-12-15 21:30:09,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 896 states have (on average 1.2522321428571428) internal successors, (1122), 901 states have internal predecessors, (1122), 70 states have call successors, (70), 24 states have call predecessors, (70), 24 states have return successors, (70), 65 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-15 21:30:09,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1262 transitions. [2023-12-15 21:30:09,126 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1262 transitions. Word has length 134 [2023-12-15 21:30:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:09,126 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1262 transitions. [2023-12-15 21:30:09,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 24 states have internal predecessors, (94), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 3 states have call predecessors, (26), 5 states have call successors, (26) [2023-12-15 21:30:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1262 transitions. [2023-12-15 21:30:09,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:30:09,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:09,128 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:09,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 21:30:09,334 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,SelfDestructingSolverStorable22 [2023-12-15 21:30:09,334 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:09,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2099673788, now seen corresponding path program 1 times [2023-12-15 21:30:09,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:09,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733585563] [2023-12-15 21:30:09,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:09,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:09,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:09,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253278203] [2023-12-15 21:30:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:09,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:09,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:09,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:09,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:30:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:09,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:30:09,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:09,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-15 21:30:09,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2023-12-15 21:30:09,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:09,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2023-12-15 21:30:09,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-12-15 21:30:09,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-12-15 21:30:09,661 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:09,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 19 [2023-12-15 21:30:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:09,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:09,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:09,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733585563] [2023-12-15 21:30:09,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:09,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253278203] [2023-12-15 21:30:09,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253278203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:09,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:09,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:30:09,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059938093] [2023-12-15 21:30:09,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:09,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:30:09,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:09,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:30:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:30:09,671 INFO L87 Difference]: Start difference. First operand 991 states and 1262 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:10,048 INFO L93 Difference]: Finished difference Result 2405 states and 3027 transitions. [2023-12-15 21:30:10,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:30:10,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:30:10,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:10,052 INFO L225 Difference]: With dead ends: 2405 [2023-12-15 21:30:10,052 INFO L226 Difference]: Without dead ends: 1415 [2023-12-15 21:30:10,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:30:10,054 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 137 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:10,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 440 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:30:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2023-12-15 21:30:10,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 990. [2023-12-15 21:30:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 883 states have (on average 1.2344280860702153) internal successors, (1090), 890 states have internal predecessors, (1090), 78 states have call successors, (78), 28 states have call predecessors, (78), 28 states have return successors, (78), 71 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-15 21:30:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1246 transitions. [2023-12-15 21:30:10,125 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1246 transitions. Word has length 134 [2023-12-15 21:30:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:10,125 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1246 transitions. [2023-12-15 21:30:10,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1246 transitions. [2023-12-15 21:30:10,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 21:30:10,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:10,127 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:10,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:10,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:10,333 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:10,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:10,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1820441519, now seen corresponding path program 1 times [2023-12-15 21:30:10,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:10,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57638322] [2023-12-15 21:30:10,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:10,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:10,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:10,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769078041] [2023-12-15 21:30:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:10,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:10,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:10,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:10,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:30:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:10,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-15 21:30:10,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:10,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-15 21:30:10,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:10,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 20 [2023-12-15 21:30:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-15 21:30:10,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:30:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:10,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:10,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57638322] [2023-12-15 21:30:10,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:10,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769078041] [2023-12-15 21:30:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769078041] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:30:10,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:30:10,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-12-15 21:30:10,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068098932] [2023-12-15 21:30:10,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:10,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:30:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:10,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:30:10,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:30:10,651 INFO L87 Difference]: Start difference. First operand 990 states and 1246 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:10,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:10,870 INFO L93 Difference]: Finished difference Result 2192 states and 2761 transitions. [2023-12-15 21:30:10,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:30:10,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2023-12-15 21:30:10,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:10,873 INFO L225 Difference]: With dead ends: 2192 [2023-12-15 21:30:10,873 INFO L226 Difference]: Without dead ends: 1203 [2023-12-15 21:30:10,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:30:10,875 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 95 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:10,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 762 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:10,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-12-15 21:30:10,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1045. [2023-12-15 21:30:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 938 states have (on average 1.2377398720682302) internal successors, (1161), 945 states have internal predecessors, (1161), 78 states have call successors, (78), 28 states have call predecessors, (78), 28 states have return successors, (78), 71 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-15 21:30:10,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1317 transitions. [2023-12-15 21:30:10,923 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1317 transitions. Word has length 134 [2023-12-15 21:30:10,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:10,924 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1317 transitions. [2023-12-15 21:30:10,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:10,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1317 transitions. [2023-12-15 21:30:10,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-15 21:30:10,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:10,925 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:10,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:11,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:11,131 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:11,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:11,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1137489959, now seen corresponding path program 1 times [2023-12-15 21:30:11,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:11,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532346392] [2023-12-15 21:30:11,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:11,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:11,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:11,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345242585] [2023-12-15 21:30:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:11,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:11,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:11,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:11,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:30:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:11,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:30:11,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:11,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-12-15 21:30:11,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2023-12-15 21:30:11,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:11,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 49 [2023-12-15 21:30:11,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-12-15 21:30:11,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:11,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 27 [2023-12-15 21:30:11,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-15 21:30:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:11,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:11,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:11,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532346392] [2023-12-15 21:30:11,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:11,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345242585] [2023-12-15 21:30:11,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345242585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:11,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:11,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:30:11,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289161263] [2023-12-15 21:30:11,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:11,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:30:11,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:30:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:30:11,532 INFO L87 Difference]: Start difference. First operand 1045 states and 1317 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:11,907 INFO L93 Difference]: Finished difference Result 2402 states and 2991 transitions. [2023-12-15 21:30:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:30:11,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2023-12-15 21:30:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:11,911 INFO L225 Difference]: With dead ends: 2402 [2023-12-15 21:30:11,911 INFO L226 Difference]: Without dead ends: 1305 [2023-12-15 21:30:11,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:30:11,913 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 111 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:11,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 550 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:30:11,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-12-15 21:30:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 926. [2023-12-15 21:30:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 829 states have (on average 1.2231604342581424) internal successors, (1014), 834 states have internal predecessors, (1014), 70 states have call successors, (70), 26 states have call predecessors, (70), 26 states have return successors, (70), 65 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-15 21:30:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1154 transitions. [2023-12-15 21:30:11,975 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1154 transitions. Word has length 135 [2023-12-15 21:30:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:11,976 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1154 transitions. [2023-12-15 21:30:11,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1154 transitions. [2023-12-15 21:30:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-15 21:30:11,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:11,977 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:11,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 21:30:12,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-15 21:30:12,183 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:12,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1071134778, now seen corresponding path program 1 times [2023-12-15 21:30:12,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:12,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230697249] [2023-12-15 21:30:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:12,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 21:30:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 21:30:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 21:30:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 21:30:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 21:30:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 21:30:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-15 21:30:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 21:30:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 21:30:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 21:30:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 21:30:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 21:30:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 21:30:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 21:30:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 21:30:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 21:30:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 21:30:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:12,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:12,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230697249] [2023-12-15 21:30:12,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230697249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:12,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:12,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:30:12,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056006238] [2023-12-15 21:30:12,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:12,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:30:12,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:12,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:30:12,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:12,473 INFO L87 Difference]: Start difference. First operand 926 states and 1154 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:30:12,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:12,664 INFO L93 Difference]: Finished difference Result 1437 states and 1739 transitions. [2023-12-15 21:30:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:30:12,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2023-12-15 21:30:12,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:12,668 INFO L225 Difference]: With dead ends: 1437 [2023-12-15 21:30:12,668 INFO L226 Difference]: Without dead ends: 1435 [2023-12-15 21:30:12,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:30:12,669 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 80 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:12,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 819 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2023-12-15 21:30:12,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1431. [2023-12-15 21:30:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1248 states have (on average 1.1762820512820513) internal successors, (1468), 1260 states have internal predecessors, (1468), 130 states have call successors, (130), 52 states have call predecessors, (130), 52 states have return successors, (130), 118 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-15 21:30:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1728 transitions. [2023-12-15 21:30:12,751 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1728 transitions. Word has length 136 [2023-12-15 21:30:12,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:12,752 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 1728 transitions. [2023-12-15 21:30:12,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-15 21:30:12,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1728 transitions. [2023-12-15 21:30:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-15 21:30:12,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:12,753 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:12,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 21:30:12,753 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:12,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:12,754 INFO L85 PathProgramCache]: Analyzing trace with hash 706219203, now seen corresponding path program 1 times [2023-12-15 21:30:12,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:12,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934766448] [2023-12-15 21:30:12,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:12,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:12,767 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:12,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622854747] [2023-12-15 21:30:12,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:12,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:12,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:12,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:12,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:30:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:12,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:30:12,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:13,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-15 21:30:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:13,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:13,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:13,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934766448] [2023-12-15 21:30:13,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:13,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622854747] [2023-12-15 21:30:13,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622854747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:13,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:13,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:13,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541239692] [2023-12-15 21:30:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:13,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:13,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:13,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:13,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:13,025 INFO L87 Difference]: Start difference. First operand 1431 states and 1728 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:13,175 INFO L93 Difference]: Finished difference Result 2928 states and 3529 transitions. [2023-12-15 21:30:13,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:30:13,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 136 [2023-12-15 21:30:13,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:13,179 INFO L225 Difference]: With dead ends: 2928 [2023-12-15 21:30:13,179 INFO L226 Difference]: Without dead ends: 1498 [2023-12-15 21:30:13,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:13,181 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 51 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:13,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 555 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2023-12-15 21:30:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1415. [2023-12-15 21:30:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1232 states have (on average 1.1672077922077921) internal successors, (1438), 1244 states have internal predecessors, (1438), 130 states have call successors, (130), 52 states have call predecessors, (130), 52 states have return successors, (130), 118 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-15 21:30:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1698 transitions. [2023-12-15 21:30:13,267 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1698 transitions. Word has length 136 [2023-12-15 21:30:13,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:13,268 INFO L495 AbstractCegarLoop]: Abstraction has 1415 states and 1698 transitions. [2023-12-15 21:30:13,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1698 transitions. [2023-12-15 21:30:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-15 21:30:13,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:13,269 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:13,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:13,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-15 21:30:13,478 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:13,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:13,479 INFO L85 PathProgramCache]: Analyzing trace with hash -235527550, now seen corresponding path program 1 times [2023-12-15 21:30:13,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:13,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599345821] [2023-12-15 21:30:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:13,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:13,492 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:13,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476089549] [2023-12-15 21:30:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:13,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:13,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:13,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:13,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:30:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:13,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:30:13,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:13,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-15 21:30:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:13,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:13,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:13,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599345821] [2023-12-15 21:30:13,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:13,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476089549] [2023-12-15 21:30:13,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476089549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:13,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:13,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:13,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289057957] [2023-12-15 21:30:13,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:13,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:13,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:13,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:13,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:13,717 INFO L87 Difference]: Start difference. First operand 1415 states and 1698 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:13,836 INFO L93 Difference]: Finished difference Result 2533 states and 3048 transitions. [2023-12-15 21:30:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:30:13,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 137 [2023-12-15 21:30:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:13,840 INFO L225 Difference]: With dead ends: 2533 [2023-12-15 21:30:13,840 INFO L226 Difference]: Without dead ends: 1119 [2023-12-15 21:30:13,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:30:13,845 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 57 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:13,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 441 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2023-12-15 21:30:13,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1117. [2023-12-15 21:30:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 953 states have (on average 1.154249737670514) internal successors, (1100), 963 states have internal predecessors, (1100), 116 states have call successors, (116), 47 states have call predecessors, (116), 47 states have return successors, (116), 106 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-15 21:30:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1332 transitions. [2023-12-15 21:30:13,931 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1332 transitions. Word has length 137 [2023-12-15 21:30:13,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:13,931 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1332 transitions. [2023-12-15 21:30:13,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:13,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1332 transitions. [2023-12-15 21:30:13,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-15 21:30:13,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:13,932 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:13,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:14,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:14,139 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:14,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash 17111821, now seen corresponding path program 1 times [2023-12-15 21:30:14,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:14,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015038354] [2023-12-15 21:30:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:14,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:14,152 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:14,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864505578] [2023-12-15 21:30:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:14,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:14,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:14,154 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:14,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:30:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:14,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:30:14,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:14,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-15 21:30:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:14,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:14,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:14,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015038354] [2023-12-15 21:30:14,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:14,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864505578] [2023-12-15 21:30:14,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864505578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:14,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:14,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:14,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75313513] [2023-12-15 21:30:14,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:14,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:14,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:14,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:14,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:14,345 INFO L87 Difference]: Start difference. First operand 1117 states and 1332 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:14,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:14,483 INFO L93 Difference]: Finished difference Result 2136 states and 2541 transitions. [2023-12-15 21:30:14,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:30:14,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-15 21:30:14,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:14,486 INFO L225 Difference]: With dead ends: 2136 [2023-12-15 21:30:14,486 INFO L226 Difference]: Without dead ends: 1048 [2023-12-15 21:30:14,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:14,488 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 66 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:14,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 555 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:30:14,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-12-15 21:30:14,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1042. [2023-12-15 21:30:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 878 states have (on average 1.142369020501139) internal successors, (1003), 888 states have internal predecessors, (1003), 116 states have call successors, (116), 47 states have call predecessors, (116), 47 states have return successors, (116), 106 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-15 21:30:14,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1235 transitions. [2023-12-15 21:30:14,560 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1235 transitions. Word has length 138 [2023-12-15 21:30:14,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:14,561 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1235 transitions. [2023-12-15 21:30:14,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:14,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1235 transitions. [2023-12-15 21:30:14,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:30:14,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:14,563 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:14,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:14,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:14,769 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:14,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:14,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1021407447, now seen corresponding path program 1 times [2023-12-15 21:30:14,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:14,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353027881] [2023-12-15 21:30:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:14,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:14,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:14,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238267274] [2023-12-15 21:30:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:14,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:14,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:14,789 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:14,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:30:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:15,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:30:15,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:15,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-15 21:30:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:15,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:15,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353027881] [2023-12-15 21:30:15,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:15,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238267274] [2023-12-15 21:30:15,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238267274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:15,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:15,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:15,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341158965] [2023-12-15 21:30:15,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:15,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:15,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:15,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:15,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:15,077 INFO L87 Difference]: Start difference. First operand 1042 states and 1235 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:15,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:15,235 INFO L93 Difference]: Finished difference Result 2013 states and 2373 transitions. [2023-12-15 21:30:15,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:30:15,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:30:15,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:15,239 INFO L225 Difference]: With dead ends: 2013 [2023-12-15 21:30:15,239 INFO L226 Difference]: Without dead ends: 1000 [2023-12-15 21:30:15,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:30:15,242 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 35 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:15,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 431 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:15,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-12-15 21:30:15,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 1000. [2023-12-15 21:30:15,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 836 states have (on average 1.1160287081339713) internal successors, (933), 846 states have internal predecessors, (933), 116 states have call successors, (116), 47 states have call predecessors, (116), 47 states have return successors, (116), 106 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-15 21:30:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1165 transitions. [2023-12-15 21:30:15,323 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1165 transitions. Word has length 139 [2023-12-15 21:30:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:15,324 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1165 transitions. [2023-12-15 21:30:15,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1165 transitions. [2023-12-15 21:30:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:30:15,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:15,325 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:15,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:15,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:15,531 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:15,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:15,532 INFO L85 PathProgramCache]: Analyzing trace with hash 383738798, now seen corresponding path program 1 times [2023-12-15 21:30:15,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:15,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884820294] [2023-12-15 21:30:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:15,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:15,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:15,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852029292] [2023-12-15 21:30:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:15,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:15,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:15,563 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:15,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:30:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:15,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-15 21:30:15,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:15,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-12-15 21:30:15,867 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:15,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 56 [2023-12-15 21:30:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-15 21:30:15,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:30:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:16,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:16,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884820294] [2023-12-15 21:30:16,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:16,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852029292] [2023-12-15 21:30:16,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852029292] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:30:16,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:30:16,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-12-15 21:30:16,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113571797] [2023-12-15 21:30:16,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:16,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:30:16,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:30:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:30:16,073 INFO L87 Difference]: Start difference. First operand 1000 states and 1165 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:16,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:16,367 INFO L93 Difference]: Finished difference Result 1311 states and 1527 transitions. [2023-12-15 21:30:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:30:16,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:30:16,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:16,371 INFO L225 Difference]: With dead ends: 1311 [2023-12-15 21:30:16,371 INFO L226 Difference]: Without dead ends: 1309 [2023-12-15 21:30:16,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:30:16,371 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 81 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:16,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 936 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2023-12-15 21:30:16,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1305. [2023-12-15 21:30:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 1085 states have (on average 1.1161290322580646) internal successors, (1211), 1099 states have internal predecessors, (1211), 154 states have call successors, (154), 65 states have call predecessors, (154), 65 states have return successors, (154), 140 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:30:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1519 transitions. [2023-12-15 21:30:16,468 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1519 transitions. Word has length 139 [2023-12-15 21:30:16,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:16,468 INFO L495 AbstractCegarLoop]: Abstraction has 1305 states and 1519 transitions. [2023-12-15 21:30:16,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:16,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1519 transitions. [2023-12-15 21:30:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:30:16,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:16,470 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:16,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:16,675 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,SelfDestructingSolverStorable31 [2023-12-15 21:30:16,676 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:16,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:16,676 INFO L85 PathProgramCache]: Analyzing trace with hash 440997100, now seen corresponding path program 1 times [2023-12-15 21:30:16,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:16,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053086179] [2023-12-15 21:30:16,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:16,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:16,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:16,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336362800] [2023-12-15 21:30:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:16,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:16,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:16,718 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:16,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:30:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:17,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-15 21:30:17,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:17,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:17,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 70 [2023-12-15 21:30:17,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:17,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 51 [2023-12-15 21:30:17,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2023-12-15 21:30:17,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:17,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 26 [2023-12-15 21:30:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-15 21:30:17,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:30:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:18,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:18,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053086179] [2023-12-15 21:30:18,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:18,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336362800] [2023-12-15 21:30:18,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336362800] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:30:18,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:30:18,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-12-15 21:30:18,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253505449] [2023-12-15 21:30:18,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:18,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:30:18,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:18,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:30:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:30:18,087 INFO L87 Difference]: Start difference. First operand 1305 states and 1519 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:19,572 INFO L93 Difference]: Finished difference Result 2924 states and 3397 transitions. [2023-12-15 21:30:19,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:30:19,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:30:19,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:19,577 INFO L225 Difference]: With dead ends: 2924 [2023-12-15 21:30:19,577 INFO L226 Difference]: Without dead ends: 1648 [2023-12-15 21:30:19,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-12-15 21:30:19,579 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 132 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:19,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 518 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 21:30:19,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2023-12-15 21:30:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1422. [2023-12-15 21:30:19,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1202 states have (on average 1.1239600665557403) internal successors, (1351), 1216 states have internal predecessors, (1351), 154 states have call successors, (154), 65 states have call predecessors, (154), 65 states have return successors, (154), 140 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:30:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 1659 transitions. [2023-12-15 21:30:19,681 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 1659 transitions. Word has length 139 [2023-12-15 21:30:19,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:19,681 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 1659 transitions. [2023-12-15 21:30:19,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:19,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 1659 transitions. [2023-12-15 21:30:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:30:19,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:19,683 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:19,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:19,890 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,SelfDestructingSolverStorable32 [2023-12-15 21:30:19,890 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:19,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:19,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2078962834, now seen corresponding path program 1 times [2023-12-15 21:30:19,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:19,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165294131] [2023-12-15 21:30:19,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:19,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:19,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:19,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965337763] [2023-12-15 21:30:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:19,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:19,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:19,921 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:19,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:30:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:20,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:30:20,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:20,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:20,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 16 [2023-12-15 21:30:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:20,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:20,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165294131] [2023-12-15 21:30:20,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:20,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965337763] [2023-12-15 21:30:20,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965337763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:20,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:20,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:20,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602891572] [2023-12-15 21:30:20,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:20,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:20,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:20,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:20,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:20,154 INFO L87 Difference]: Start difference. First operand 1422 states and 1659 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:20,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:20,431 INFO L93 Difference]: Finished difference Result 3607 states and 4158 transitions. [2023-12-15 21:30:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:30:20,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:30:20,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:20,439 INFO L225 Difference]: With dead ends: 3607 [2023-12-15 21:30:20,440 INFO L226 Difference]: Without dead ends: 2214 [2023-12-15 21:30:20,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:20,442 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 56 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:20,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 354 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:20,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2023-12-15 21:30:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1522. [2023-12-15 21:30:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1302 states have (on average 1.1213517665130568) internal successors, (1460), 1316 states have internal predecessors, (1460), 154 states have call successors, (154), 65 states have call predecessors, (154), 65 states have return successors, (154), 140 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:30:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1768 transitions. [2023-12-15 21:30:20,692 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1768 transitions. Word has length 139 [2023-12-15 21:30:20,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:20,692 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 1768 transitions. [2023-12-15 21:30:20,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1768 transitions. [2023-12-15 21:30:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:30:20,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:20,695 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:20,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:20,900 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,SelfDestructingSolverStorable33 [2023-12-15 21:30:20,900 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:20,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash 249725292, now seen corresponding path program 1 times [2023-12-15 21:30:20,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:20,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833504226] [2023-12-15 21:30:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:20,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:20,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:20,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746457663] [2023-12-15 21:30:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:20,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:20,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:20,930 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:20,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:30:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:21,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-15 21:30:21,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:21,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-15 21:30:21,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-15 21:30:21,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:21,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 61 [2023-12-15 21:30:22,906 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:22,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 42 [2023-12-15 21:30:22,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2023-12-15 21:30:23,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:23,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 30 [2023-12-15 21:30:23,845 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-15 21:30:23,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:30:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:28,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:28,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833504226] [2023-12-15 21:30:28,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:28,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746457663] [2023-12-15 21:30:28,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746457663] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:30:28,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:30:28,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2023-12-15 21:30:28,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207203340] [2023-12-15 21:30:28,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:28,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:30:28,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:30:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2023-12-15 21:30:28,911 INFO L87 Difference]: Start difference. First operand 1522 states and 1768 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:36,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:36,479 INFO L93 Difference]: Finished difference Result 3172 states and 3672 transitions. [2023-12-15 21:30:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:30:36,480 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:30:36,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:36,483 INFO L225 Difference]: With dead ends: 3172 [2023-12-15 21:30:36,483 INFO L226 Difference]: Without dead ends: 1679 [2023-12-15 21:30:36,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2023-12-15 21:30:36,485 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 181 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:36,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 763 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-15 21:30:36,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2023-12-15 21:30:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1523. [2023-12-15 21:30:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1303 states have (on average 1.1212586339217192) internal successors, (1461), 1317 states have internal predecessors, (1461), 154 states have call successors, (154), 65 states have call predecessors, (154), 65 states have return successors, (154), 140 states have call predecessors, (154), 154 states have call successors, (154) [2023-12-15 21:30:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1769 transitions. [2023-12-15 21:30:36,596 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1769 transitions. Word has length 139 [2023-12-15 21:30:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:36,596 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 1769 transitions. [2023-12-15 21:30:36,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:36,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1769 transitions. [2023-12-15 21:30:36,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:30:36,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:36,598 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:36,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:36,805 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,SelfDestructingSolverStorable34 [2023-12-15 21:30:36,805 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:36,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:36,805 INFO L85 PathProgramCache]: Analyzing trace with hash 306983594, now seen corresponding path program 1 times [2023-12-15 21:30:36,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:36,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277775169] [2023-12-15 21:30:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:36,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:36,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:36,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421910699] [2023-12-15 21:30:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:36,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:36,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:36,821 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:36,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:30:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:37,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 21:30:37,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:37,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-15 21:30:37,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:37,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 28 [2023-12-15 21:30:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:37,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:37,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:37,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277775169] [2023-12-15 21:30:37,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:37,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421910699] [2023-12-15 21:30:37,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421910699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:37,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:37,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:30:37,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905459208] [2023-12-15 21:30:37,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:37,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:30:37,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:37,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:30:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:37,082 INFO L87 Difference]: Start difference. First operand 1523 states and 1769 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:37,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:37,343 INFO L93 Difference]: Finished difference Result 1581 states and 1836 transitions. [2023-12-15 21:30:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:30:37,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:30:37,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:37,351 INFO L225 Difference]: With dead ends: 1581 [2023-12-15 21:30:37,351 INFO L226 Difference]: Without dead ends: 1579 [2023-12-15 21:30:37,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:30:37,352 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 86 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:37,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1035 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:37,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-12-15 21:30:37,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1571. [2023-12-15 21:30:37,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1338 states have (on average 1.1180866965620329) internal successors, (1496), 1352 states have internal predecessors, (1496), 164 states have call successors, (164), 68 states have call predecessors, (164), 68 states have return successors, (164), 150 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-15 21:30:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 1824 transitions. [2023-12-15 21:30:37,483 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 1824 transitions. Word has length 139 [2023-12-15 21:30:37,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:37,484 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 1824 transitions. [2023-12-15 21:30:37,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:37,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 1824 transitions. [2023-12-15 21:30:37,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:30:37,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:37,486 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:37,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 21:30:37,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:37,692 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:37,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1930742162, now seen corresponding path program 1 times [2023-12-15 21:30:37,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:37,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166836449] [2023-12-15 21:30:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:37,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:37,710 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:37,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114796897] [2023-12-15 21:30:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:37,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:37,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:37,712 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:37,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:30:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:37,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:30:37,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:37,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:37,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 15 [2023-12-15 21:30:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:37,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:30:37,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:37,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166836449] [2023-12-15 21:30:37,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:37,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114796897] [2023-12-15 21:30:37,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114796897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:30:37,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:30:37,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:30:37,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682103689] [2023-12-15 21:30:37,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:37,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:30:37,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:37,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:30:37,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:30:37,975 INFO L87 Difference]: Start difference. First operand 1571 states and 1824 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:38,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:38,273 INFO L93 Difference]: Finished difference Result 3640 states and 4175 transitions. [2023-12-15 21:30:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:30:38,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:30:38,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:38,276 INFO L225 Difference]: With dead ends: 3640 [2023-12-15 21:30:38,276 INFO L226 Difference]: Without dead ends: 2110 [2023-12-15 21:30:38,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:30:38,279 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 52 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:38,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 507 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:30:38,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2023-12-15 21:30:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1241. [2023-12-15 21:30:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1076 states have (on average 1.1254646840148699) internal successors, (1211), 1083 states have internal predecessors, (1211), 116 states have call successors, (116), 48 states have call predecessors, (116), 48 states have return successors, (116), 109 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-15 21:30:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1443 transitions. [2023-12-15 21:30:38,363 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1443 transitions. Word has length 139 [2023-12-15 21:30:38,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:38,363 INFO L495 AbstractCegarLoop]: Abstraction has 1241 states and 1443 transitions. [2023-12-15 21:30:38,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:38,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1443 transitions. [2023-12-15 21:30:38,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:30:38,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:38,365 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:38,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:38,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-15 21:30:38,571 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:38,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash -155734800, now seen corresponding path program 1 times [2023-12-15 21:30:38,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:38,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339754716] [2023-12-15 21:30:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:38,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:38,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:38,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740889869] [2023-12-15 21:30:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:38,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:38,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:38,585 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:38,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 21:30:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:38,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-15 21:30:38,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:39,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:39,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 60 [2023-12-15 21:30:40,963 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:40,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 41 [2023-12-15 21:30:40,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2023-12-15 21:30:41,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2023-12-15 21:30:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-15 21:30:41,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:30:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:30:44,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:30:44,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339754716] [2023-12-15 21:30:44,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:30:44,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740889869] [2023-12-15 21:30:44,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740889869] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:30:44,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:30:44,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-12-15 21:30:44,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685915493] [2023-12-15 21:30:44,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:30:44,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:30:44,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:30:44,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:30:44,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:30:44,444 INFO L87 Difference]: Start difference. First operand 1241 states and 1443 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:50,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:30:50,446 INFO L93 Difference]: Finished difference Result 2593 states and 2998 transitions. [2023-12-15 21:30:50,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:30:50,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-12-15 21:30:50,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:30:50,449 INFO L225 Difference]: With dead ends: 2593 [2023-12-15 21:30:50,449 INFO L226 Difference]: Without dead ends: 1393 [2023-12-15 21:30:50,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-12-15 21:30:50,451 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 91 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:30:50,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 528 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-15 21:30:50,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2023-12-15 21:30:50,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1191. [2023-12-15 21:30:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1042 states have (on average 1.1257197696737045) internal successors, (1173), 1048 states have internal predecessors, (1173), 104 states have call successors, (104), 44 states have call predecessors, (104), 44 states have return successors, (104), 98 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-15 21:30:50,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1381 transitions. [2023-12-15 21:30:50,530 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1381 transitions. Word has length 139 [2023-12-15 21:30:50,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:30:50,530 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1381 transitions. [2023-12-15 21:30:50,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:30:50,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1381 transitions. [2023-12-15 21:30:50,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 21:30:50,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:30:50,532 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:50,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:50,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-15 21:30:50,740 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:30:50,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:30:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash -347006608, now seen corresponding path program 1 times [2023-12-15 21:30:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:30:50,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181617414] [2023-12-15 21:30:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:30:50,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:30:50,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341506850] [2023-12-15 21:30:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:30:50,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:30:50,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:30:50,755 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:30:50,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 21:30:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:30:51,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-15 21:30:51,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:30:51,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:51,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 51 [2023-12-15 21:30:51,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:30:51,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 32 [2023-12-15 21:30:51,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2023-12-15 21:30:52,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-15 21:30:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-15 21:30:52,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 21:30:53,910 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:30:53,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:30:53,914 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:30:53,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 21:30:54,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-15 21:30:54,114 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 140 with TraceHistMax 17,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. [2023-12-15 21:30:54,118 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:30:54,119 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:30:54,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:30:54 BoogieIcfgContainer [2023-12-15 21:30:54,120 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:30:54,121 INFO L158 Benchmark]: Toolchain (without parser) took 63782.98ms. Allocated memory was 238.0MB in the beginning and 740.3MB in the end (delta: 502.3MB). Free memory was 183.4MB in the beginning and 691.0MB in the end (delta: -507.5MB). Peak memory consumption was 427.2MB. Max. memory is 8.0GB. [2023-12-15 21:30:54,121 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 198.2MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:30:54,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.95ms. Allocated memory is still 238.0MB. Free memory was 183.4MB in the beginning and 168.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-15 21:30:54,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.20ms. Allocated memory is still 238.0MB. Free memory was 168.2MB in the beginning and 165.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 21:30:54,121 INFO L158 Benchmark]: Boogie Preprocessor took 58.61ms. Allocated memory is still 238.0MB. Free memory was 164.5MB in the beginning and 160.9MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 21:30:54,121 INFO L158 Benchmark]: RCFGBuilder took 608.25ms. Allocated memory is still 238.0MB. Free memory was 160.9MB in the beginning and 130.5MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-15 21:30:54,121 INFO L158 Benchmark]: TraceAbstraction took 62819.15ms. Allocated memory was 238.0MB in the beginning and 740.3MB in the end (delta: 502.3MB). Free memory was 129.4MB in the beginning and 691.0MB in the end (delta: -561.5MB). Peak memory consumption was 373.7MB. Max. memory is 8.0GB. [2023-12-15 21:30:54,122 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 198.2MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 244.95ms. Allocated memory is still 238.0MB. Free memory was 183.4MB in the beginning and 168.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.20ms. Allocated memory is still 238.0MB. Free memory was 168.2MB in the beginning and 165.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.61ms. Allocated memory is still 238.0MB. Free memory was 164.5MB in the beginning and 160.9MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 608.25ms. Allocated memory is still 238.0MB. Free memory was 160.9MB in the beginning and 130.5MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * TraceAbstraction took 62819.15ms. Allocated memory was 238.0MB in the beginning and 740.3MB in the end (delta: 502.3MB). Free memory was 129.4MB in the beginning and 691.0MB in the end (delta: -561.5MB). Peak memory consumption was 373.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 140 with TraceHistMax 17,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.8s, OverallIterations: 39, TraceHistogramMax: 17, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 24.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4609 SdHoareTripleChecker+Valid, 17.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4571 mSDsluCounter, 24720 SdHoareTripleChecker+Invalid, 16.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19376 mSDsCounter, 355 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9649 IncrementalHoareTripleChecker+Invalid, 10004 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 355 mSolverCounterUnsat, 5344 mSDtfsCounter, 9649 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4283 GetRequests, 3900 SyntacticMatches, 1 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1571occurred in iteration=36, InterpolantAutomatonStates: 337, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 38 MinimizatonAttempts, 5823 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 24.7s InterpolantComputationTime, 5195 NumberOfCodeBlocks, 5195 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 6107 ConstructedInterpolants, 0 QuantifiedInterpolants, 26466 SizeOfPredicates, 189 NumberOfNonLiveVariables, 7078 ConjunctsInSsa, 368 ConjunctsInUnsatCore, 46 InterpolantComputations, 37 PerfectInterpolantSequences, 24784/25024 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown