/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-27.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 01:41:56,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 01:41:56,832 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 01:41:56,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 01:41:56,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 01:41:56,871 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 01:41:56,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 01:41:56,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 01:41:56,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 01:41:56,876 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 01:41:56,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 01:41:56,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 01:41:56,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 01:41:56,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 01:41:56,879 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 01:41:56,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 01:41:56,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 01:41:56,880 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 01:41:56,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 01:41:56,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 01:41:56,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 01:41:56,881 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 01:41:56,881 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 01:41:56,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 01:41:56,881 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 01:41:56,882 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 01:41:56,882 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 01:41:56,882 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 01:41:56,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 01:41:56,883 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 01:41:56,883 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 01:41:56,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 01:41:56,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:41:56,884 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 01:41:56,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 01:41:56,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 01:41:56,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 01:41:56,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 01:41:56,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 01:41:56,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 01:41:56,885 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 01:41:56,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 01:41:56,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 01:41:56,886 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 01:41:57,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 01:41:57,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 01:41:57,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 01:41:57,091 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 01:41:57,091 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 01:41:57,092 INFO L431 ainManager$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 [2023-12-21 01:41:58,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 01:41:58,458 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 01:41:58,458 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-27.i [2023-12-21 01:41:58,471 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae902f93e/cf6abff2e5db44e3a69b0f7aaaa3cc08/FLAG89e0721d1 [2023-12-21 01:41:58,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae902f93e/cf6abff2e5db44e3a69b0f7aaaa3cc08 [2023-12-21 01:41:58,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 01:41:58,483 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 01:41:58,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 01:41:58,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 01:41:58,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 01:41:58,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3b2705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58, skipping insertion in model container [2023-12-21 01:41:58,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,516 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 01:41:58,618 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] [2023-12-21 01:41:58,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:41:58,677 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 01:41:58,686 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] [2023-12-21 01:41:58,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 01:41:58,728 INFO L206 MainTranslator]: Completed translation [2023-12-21 01:41:58,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58 WrapperNode [2023-12-21 01:41:58,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 01:41:58,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 01:41:58,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 01:41:58,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 01:41:58,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,775 INFO L138 Inliner]: procedures = 26, calls = 155, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 433 [2023-12-21 01:41:58,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 01:41:58,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 01:41:58,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 01:41:58,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 01:41:58,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,796 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,812 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]. [2023-12-21 01:41:58,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 01:41:58,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 01:41:58,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 01:41:58,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 01:41:58,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (1/1) ... [2023-12-21 01:41:58,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 01:41:58,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:41:58,895 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) [2023-12-21 01:41:58,916 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 [2023-12-21 01:41:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 01:41:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 01:41:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 01:41:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-21 01:41:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-21 01:41:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-21 01:41:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 01:41:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 01:41:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-21 01:41:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-21 01:41:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-21 01:41:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 01:41:58,950 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 01:41:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 01:41:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 01:41:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 01:41:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 01:41:58,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-21 01:41:58,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 01:41:58,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 01:41:59,097 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 01:41:59,099 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 01:41:59,457 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 01:41:59,490 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 01:41:59,490 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 01:41:59,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:41:59 BoogieIcfgContainer [2023-12-21 01:41:59,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 01:41:59,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 01:41:59,492 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 01:41:59,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 01:41:59,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:41:58" (1/3) ... [2023-12-21 01:41:59,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cff27ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:41:59, skipping insertion in model container [2023-12-21 01:41:59,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:41:58" (2/3) ... [2023-12-21 01:41:59,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cff27ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:41:59, skipping insertion in model container [2023-12-21 01:41:59,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:41:59" (3/3) ... [2023-12-21 01:41:59,496 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-27.i [2023-12-21 01:41:59,509 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 01:41:59,509 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 01:41:59,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 01:41:59,545 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;@327b06e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 01:41:59,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 01:41:59,561 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) [2023-12-21 01:41:59,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 01:41:59,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:41:59,580 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] [2023-12-21 01:41:59,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:41:59,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:41:59,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1965699129, now seen corresponding path program 1 times [2023-12-21 01:41:59,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:41:59,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393436173] [2023-12-21 01:41:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:41:59,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:41:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:41:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:41:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:41:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:41:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:41:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:41:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:41:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:41:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:41:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:41:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:41:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:41:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:41:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:41:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:41:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:41:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:41:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:41:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:41:59,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:41:59,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393436173] [2023-12-21 01:41:59,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393436173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:41:59,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:41:59,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 01:41:59,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089490743] [2023-12-21 01:41:59,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:41:59,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 01:41:59,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:41:59,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 01:41:59,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 01:41:59,906 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) [2023-12-21 01:41:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:41:59,940 INFO L93 Difference]: Finished difference Result 171 states and 273 transitions. [2023-12-21 01:41:59,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 01:41:59,942 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 [2023-12-21 01:41:59,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:41:59,948 INFO L225 Difference]: With dead ends: 171 [2023-12-21 01:41:59,948 INFO L226 Difference]: Without dead ends: 85 [2023-12-21 01:41:59,951 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 [2023-12-21 01:41:59,954 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 [2023-12-21 01:41:59,955 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] [2023-12-21 01:41:59,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-21 01:41:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-12-21 01:41:59,993 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) [2023-12-21 01:41:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 124 transitions. [2023-12-21 01:41:59,997 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 124 transitions. Word has length 126 [2023-12-21 01:41:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:41:59,997 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 124 transitions. [2023-12-21 01:41:59,997 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) [2023-12-21 01:41:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 124 transitions. [2023-12-21 01:41:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 01:41:59,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:41:59,999 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] [2023-12-21 01:41:59,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 01:42:00,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:00,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:00,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2096195045, now seen corresponding path program 1 times [2023-12-21 01:42:00,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:00,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333606459] [2023-12-21 01:42:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:00,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:00,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:00,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333606459] [2023-12-21 01:42:00,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333606459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:00,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:00,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:42:00,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262931031] [2023-12-21 01:42:00,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:00,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:42:00,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:00,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:42:00,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:42:00,738 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) [2023-12-21 01:42:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:00,863 INFO L93 Difference]: Finished difference Result 222 states and 323 transitions. [2023-12-21 01:42:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:42:00,864 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 [2023-12-21 01:42:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:00,867 INFO L225 Difference]: With dead ends: 222 [2023-12-21 01:42:00,868 INFO L226 Difference]: Without dead ends: 138 [2023-12-21 01:42:00,870 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 [2023-12-21 01:42:00,871 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 [2023-12-21 01:42:00,872 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] [2023-12-21 01:42:00,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-21 01:42:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2023-12-21 01:42:00,892 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) [2023-12-21 01:42:00,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 197 transitions. [2023-12-21 01:42:00,894 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 197 transitions. Word has length 126 [2023-12-21 01:42:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:00,896 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 197 transitions. [2023-12-21 01:42:00,896 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) [2023-12-21 01:42:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 197 transitions. [2023-12-21 01:42:00,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 01:42:00,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:00,900 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] [2023-12-21 01:42:00,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 01:42:00,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:00,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:00,901 INFO L85 PathProgramCache]: Analyzing trace with hash 102050339, now seen corresponding path program 1 times [2023-12-21 01:42:00,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:00,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167056819] [2023-12-21 01:42:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:00,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:01,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:01,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167056819] [2023-12-21 01:42:01,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167056819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:01,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:01,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:42:01,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170121299] [2023-12-21 01:42:01,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:01,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:42:01,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:01,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:42:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:42:01,277 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) [2023-12-21 01:42:01,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:01,394 INFO L93 Difference]: Finished difference Result 403 states and 589 transitions. [2023-12-21 01:42:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:42:01,394 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 [2023-12-21 01:42:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:01,399 INFO L225 Difference]: With dead ends: 403 [2023-12-21 01:42:01,399 INFO L226 Difference]: Without dead ends: 269 [2023-12-21 01:42:01,401 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 [2023-12-21 01:42:01,403 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 [2023-12-21 01:42:01,404 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] [2023-12-21 01:42:01,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-21 01:42:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 263. [2023-12-21 01:42:01,435 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) [2023-12-21 01:42:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 384 transitions. [2023-12-21 01:42:01,436 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 384 transitions. Word has length 126 [2023-12-21 01:42:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:01,437 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 384 transitions. [2023-12-21 01:42:01,437 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) [2023-12-21 01:42:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 384 transitions. [2023-12-21 01:42:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 01:42:01,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:01,439 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] [2023-12-21 01:42:01,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 01:42:01,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:01,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1877340327, now seen corresponding path program 1 times [2023-12-21 01:42:01,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:01,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441507621] [2023-12-21 01:42:01,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:01,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:01,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:01,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441507621] [2023-12-21 01:42:01,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441507621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:01,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:01,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:42:01,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100966618] [2023-12-21 01:42:01,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:01,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:42:01,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:01,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:42:01,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:42:01,802 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) [2023-12-21 01:42:01,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:01,905 INFO L93 Difference]: Finished difference Result 633 states and 914 transitions. [2023-12-21 01:42:01,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:42:01,906 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 [2023-12-21 01:42:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:01,909 INFO L225 Difference]: With dead ends: 633 [2023-12-21 01:42:01,909 INFO L226 Difference]: Without dead ends: 371 [2023-12-21 01:42:01,909 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 [2023-12-21 01:42:01,913 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 [2023-12-21 01:42:01,914 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] [2023-12-21 01:42:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-12-21 01:42:01,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 205. [2023-12-21 01:42:01,932 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) [2023-12-21 01:42:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 292 transitions. [2023-12-21 01:42:01,933 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 292 transitions. Word has length 126 [2023-12-21 01:42:01,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:01,933 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 292 transitions. [2023-12-21 01:42:01,933 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) [2023-12-21 01:42:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 292 transitions. [2023-12-21 01:42:01,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-21 01:42:01,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:01,934 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] [2023-12-21 01:42:01,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 01:42:01,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:01,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2139719341, now seen corresponding path program 1 times [2023-12-21 01:42:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389136153] [2023-12-21 01:42:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:02,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:02,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389136153] [2023-12-21 01:42:02,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389136153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:02,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:02,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:42:02,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475909321] [2023-12-21 01:42:02,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:02,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:42:02,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:02,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:42:02,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:42:02,710 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) [2023-12-21 01:42:02,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:02,937 INFO L93 Difference]: Finished difference Result 390 states and 554 transitions. [2023-12-21 01:42:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:42:02,938 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 [2023-12-21 01:42:02,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:02,939 INFO L225 Difference]: With dead ends: 390 [2023-12-21 01:42:02,939 INFO L226 Difference]: Without dead ends: 285 [2023-12-21 01:42:02,940 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 [2023-12-21 01:42:02,940 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 [2023-12-21 01:42:02,940 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] [2023-12-21 01:42:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-21 01:42:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 263. [2023-12-21 01:42:02,951 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) [2023-12-21 01:42:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 372 transitions. [2023-12-21 01:42:02,953 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 372 transitions. Word has length 127 [2023-12-21 01:42:02,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:02,954 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 372 transitions. [2023-12-21 01:42:02,954 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) [2023-12-21 01:42:02,954 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 372 transitions. [2023-12-21 01:42:02,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-21 01:42:02,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:02,955 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] [2023-12-21 01:42:02,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 01:42:02,955 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:02,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:02,955 INFO L85 PathProgramCache]: Analyzing trace with hash -626412120, now seen corresponding path program 1 times [2023-12-21 01:42:02,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:02,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162043425] [2023-12-21 01:42:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:02,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:03,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:03,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162043425] [2023-12-21 01:42:03,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162043425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:03,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:03,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 01:42:03,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824476047] [2023-12-21 01:42:03,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:03,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 01:42:03,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:03,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 01:42:03,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 01:42:03,267 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) [2023-12-21 01:42:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:03,378 INFO L93 Difference]: Finished difference Result 531 states and 750 transitions. [2023-12-21 01:42:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 01:42:03,378 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 [2023-12-21 01:42:03,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:03,381 INFO L225 Difference]: With dead ends: 531 [2023-12-21 01:42:03,381 INFO L226 Difference]: Without dead ends: 269 [2023-12-21 01:42:03,381 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 [2023-12-21 01:42:03,382 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 [2023-12-21 01:42:03,382 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] [2023-12-21 01:42:03,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-21 01:42:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 263. [2023-12-21 01:42:03,399 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) [2023-12-21 01:42:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 371 transitions. [2023-12-21 01:42:03,400 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 371 transitions. Word has length 128 [2023-12-21 01:42:03,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:03,401 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 371 transitions. [2023-12-21 01:42:03,401 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) [2023-12-21 01:42:03,401 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 371 transitions. [2023-12-21 01:42:03,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 01:42:03,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:03,402 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] [2023-12-21 01:42:03,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 01:42:03,402 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:03,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:03,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1682473688, now seen corresponding path program 1 times [2023-12-21 01:42:03,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:03,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063448709] [2023-12-21 01:42:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:03,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:03,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:03,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063448709] [2023-12-21 01:42:03,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063448709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:03,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:03,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:42:03,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751054290] [2023-12-21 01:42:03,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:03,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:42:03,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:03,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:42:03,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:42:03,638 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) [2023-12-21 01:42:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:03,807 INFO L93 Difference]: Finished difference Result 546 states and 774 transitions. [2023-12-21 01:42:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:42:03,807 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 [2023-12-21 01:42:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:03,809 INFO L225 Difference]: With dead ends: 546 [2023-12-21 01:42:03,809 INFO L226 Difference]: Without dead ends: 383 [2023-12-21 01:42:03,809 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 [2023-12-21 01:42:03,810 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:42:03,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 546 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:42:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-21 01:42:03,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 356. [2023-12-21 01:42:03,828 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) [2023-12-21 01:42:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 503 transitions. [2023-12-21 01:42:03,829 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 503 transitions. Word has length 129 [2023-12-21 01:42:03,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:03,838 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 503 transitions. [2023-12-21 01:42:03,839 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) [2023-12-21 01:42:03,839 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 503 transitions. [2023-12-21 01:42:03,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 01:42:03,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:03,840 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] [2023-12-21 01:42:03,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 01:42:03,841 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:03,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:03,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1106507992, now seen corresponding path program 1 times [2023-12-21 01:42:03,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:03,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607077846] [2023-12-21 01:42:03,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:03,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:04,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:04,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607077846] [2023-12-21 01:42:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607077846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:04,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:04,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:42:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938139162] [2023-12-21 01:42:04,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:04,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:42:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:04,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:42:04,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:42:04,054 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) [2023-12-21 01:42:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:04,197 INFO L93 Difference]: Finished difference Result 594 states and 837 transitions. [2023-12-21 01:42:04,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:42:04,197 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 [2023-12-21 01:42:04,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:04,198 INFO L225 Difference]: With dead ends: 594 [2023-12-21 01:42:04,199 INFO L226 Difference]: Without dead ends: 312 [2023-12-21 01:42:04,199 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 [2023-12-21 01:42:04,199 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 [2023-12-21 01:42:04,200 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] [2023-12-21 01:42:04,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-21 01:42:04,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 207. [2023-12-21 01:42:04,209 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) [2023-12-21 01:42:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 287 transitions. [2023-12-21 01:42:04,210 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 287 transitions. Word has length 129 [2023-12-21 01:42:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:04,210 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 287 transitions. [2023-12-21 01:42:04,211 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) [2023-12-21 01:42:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 287 transitions. [2023-12-21 01:42:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 01:42:04,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:04,211 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] [2023-12-21 01:42:04,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 01:42:04,212 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:04,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash -23200275, now seen corresponding path program 1 times [2023-12-21 01:42:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:04,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909944055] [2023-12-21 01:42:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:04,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:05,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:05,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909944055] [2023-12-21 01:42:05,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909944055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:05,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:05,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 01:42:05,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892424355] [2023-12-21 01:42:05,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:05,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:42:05,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:05,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:42:05,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:42:05,043 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) [2023-12-21 01:42:05,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:05,450 INFO L93 Difference]: Finished difference Result 496 states and 687 transitions. [2023-12-21 01:42:05,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 01:42:05,451 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 [2023-12-21 01:42:05,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:05,452 INFO L225 Difference]: With dead ends: 496 [2023-12-21 01:42:05,452 INFO L226 Difference]: Without dead ends: 290 [2023-12-21 01:42:05,453 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 [2023-12-21 01:42:05,454 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 [2023-12-21 01:42:05,455 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] [2023-12-21 01:42:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-12-21 01:42:05,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 268. [2023-12-21 01:42:05,469 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) [2023-12-21 01:42:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 369 transitions. [2023-12-21 01:42:05,470 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 369 transitions. Word has length 130 [2023-12-21 01:42:05,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:05,471 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 369 transitions. [2023-12-21 01:42:05,471 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) [2023-12-21 01:42:05,471 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 369 transitions. [2023-12-21 01:42:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 01:42:05,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:05,472 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] [2023-12-21 01:42:05,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 01:42:05,472 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:05,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:05,472 INFO L85 PathProgramCache]: Analyzing trace with hash 677864303, now seen corresponding path program 1 times [2023-12-21 01:42:05,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:05,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137397064] [2023-12-21 01:42:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:05,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:06,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137397064] [2023-12-21 01:42:06,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137397064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:06,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:06,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 01:42:06,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760849632] [2023-12-21 01:42:06,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:06,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:42:06,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:06,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:42:06,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 01:42:06,179 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) [2023-12-21 01:42:06,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:06,368 INFO L93 Difference]: Finished difference Result 560 states and 770 transitions. [2023-12-21 01:42:06,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 01:42:06,369 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 [2023-12-21 01:42:06,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:06,372 INFO L225 Difference]: With dead ends: 560 [2023-12-21 01:42:06,372 INFO L226 Difference]: Without dead ends: 293 [2023-12-21 01:42:06,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:42:06,373 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 102 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 01:42:06,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 768 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 01:42:06,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-21 01:42:06,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 269. [2023-12-21 01:42:06,408 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) [2023-12-21 01:42:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 367 transitions. [2023-12-21 01:42:06,409 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 367 transitions. Word has length 130 [2023-12-21 01:42:06,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:06,409 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 367 transitions. [2023-12-21 01:42:06,410 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) [2023-12-21 01:42:06,410 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 367 transitions. [2023-12-21 01:42:06,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 01:42:06,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:06,411 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] [2023-12-21 01:42:06,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 01:42:06,411 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:06,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:06,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1712144017, now seen corresponding path program 1 times [2023-12-21 01:42:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:06,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023782423] [2023-12-21 01:42:06,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:06,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:07,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:07,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023782423] [2023-12-21 01:42:07,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023782423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:07,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:07,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 01:42:07,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113163021] [2023-12-21 01:42:07,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:07,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:42:07,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:07,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:42:07,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:42:07,158 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) [2023-12-21 01:42:07,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:07,459 INFO L93 Difference]: Finished difference Result 543 states and 737 transitions. [2023-12-21 01:42:07,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 01:42:07,459 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 [2023-12-21 01:42:07,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:07,463 INFO L225 Difference]: With dead ends: 543 [2023-12-21 01:42:07,463 INFO L226 Difference]: Without dead ends: 275 [2023-12-21 01:42:07,463 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 [2023-12-21 01:42:07,464 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 01:42:07,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 745 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 01:42:07,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-21 01:42:07,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 273. [2023-12-21 01:42:07,479 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) [2023-12-21 01:42:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 369 transitions. [2023-12-21 01:42:07,480 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 369 transitions. Word has length 130 [2023-12-21 01:42:07,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:07,480 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 369 transitions. [2023-12-21 01:42:07,481 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) [2023-12-21 01:42:07,481 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 369 transitions. [2023-12-21 01:42:07,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 01:42:07,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:07,482 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] [2023-12-21 01:42:07,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 01:42:07,482 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:07,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:07,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1011079439, now seen corresponding path program 1 times [2023-12-21 01:42:07,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:07,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029679853] [2023-12-21 01:42:07,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:07,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:08,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:08,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029679853] [2023-12-21 01:42:08,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029679853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:08,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:08,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 01:42:08,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209296526] [2023-12-21 01:42:08,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:08,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:42:08,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:08,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:42:08,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:42:08,068 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) [2023-12-21 01:42:08,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:08,399 INFO L93 Difference]: Finished difference Result 564 states and 757 transitions. [2023-12-21 01:42:08,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 01:42:08,400 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 [2023-12-21 01:42:08,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:08,401 INFO L225 Difference]: With dead ends: 564 [2023-12-21 01:42:08,401 INFO L226 Difference]: Without dead ends: 292 [2023-12-21 01:42:08,401 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 [2023-12-21 01:42:08,402 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 [2023-12-21 01:42:08,402 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] [2023-12-21 01:42:08,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-21 01:42:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 273. [2023-12-21 01:42:08,417 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) [2023-12-21 01:42:08,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 368 transitions. [2023-12-21 01:42:08,418 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 368 transitions. Word has length 130 [2023-12-21 01:42:08,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:08,418 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 368 transitions. [2023-12-21 01:42:08,418 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) [2023-12-21 01:42:08,418 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 368 transitions. [2023-12-21 01:42:08,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 01:42:08,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:08,419 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] [2023-12-21 01:42:08,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 01:42:08,419 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:08,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash 327502817, now seen corresponding path program 1 times [2023-12-21 01:42:08,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:08,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376137555] [2023-12-21 01:42:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:08,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:08,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:08,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376137555] [2023-12-21 01:42:08,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376137555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:08,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:08,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:42:08,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237530681] [2023-12-21 01:42:08,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:08,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:42:08,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:08,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:42:08,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:42:08,686 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) [2023-12-21 01:42:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:08,770 INFO L93 Difference]: Finished difference Result 781 states and 1063 transitions. [2023-12-21 01:42:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:42:08,771 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 [2023-12-21 01:42:08,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:08,773 INFO L225 Difference]: With dead ends: 781 [2023-12-21 01:42:08,773 INFO L226 Difference]: Without dead ends: 509 [2023-12-21 01:42:08,773 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 [2023-12-21 01:42:08,774 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 [2023-12-21 01:42:08,774 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] [2023-12-21 01:42:08,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-12-21 01:42:08,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 318. [2023-12-21 01:42:08,789 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) [2023-12-21 01:42:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 422 transitions. [2023-12-21 01:42:08,790 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 422 transitions. Word has length 130 [2023-12-21 01:42:08,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:08,790 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 422 transitions. [2023-12-21 01:42:08,791 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) [2023-12-21 01:42:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 422 transitions. [2023-12-21 01:42:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 01:42:08,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:08,792 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] [2023-12-21 01:42:08,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 01:42:08,792 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:08,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash -65524193, now seen corresponding path program 1 times [2023-12-21 01:42:08,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:08,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103627406] [2023-12-21 01:42:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:08,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:09,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:09,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103627406] [2023-12-21 01:42:09,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103627406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:09,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:09,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 01:42:09,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643626567] [2023-12-21 01:42:09,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:09,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 01:42:09,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:09,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 01:42:09,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 01:42:09,426 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) [2023-12-21 01:42:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:09,772 INFO L93 Difference]: Finished difference Result 881 states and 1169 transitions. [2023-12-21 01:42:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 01:42:09,773 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 [2023-12-21 01:42:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:09,775 INFO L225 Difference]: With dead ends: 881 [2023-12-21 01:42:09,775 INFO L226 Difference]: Without dead ends: 564 [2023-12-21 01:42:09,776 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 [2023-12-21 01:42:09,776 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 [2023-12-21 01:42:09,776 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] [2023-12-21 01:42:09,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-12-21 01:42:09,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 518. [2023-12-21 01:42:09,804 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) [2023-12-21 01:42:09,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 676 transitions. [2023-12-21 01:42:09,807 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 676 transitions. Word has length 130 [2023-12-21 01:42:09,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:09,807 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 676 transitions. [2023-12-21 01:42:09,807 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) [2023-12-21 01:42:09,807 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 676 transitions. [2023-12-21 01:42:09,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 01:42:09,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:09,808 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] [2023-12-21 01:42:09,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 01:42:09,808 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:09,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:09,809 INFO L85 PathProgramCache]: Analyzing trace with hash 75024417, now seen corresponding path program 1 times [2023-12-21 01:42:09,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:09,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764971133] [2023-12-21 01:42:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:09,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:09,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:09,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764971133] [2023-12-21 01:42:09,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764971133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:09,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:09,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:42:09,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048057493] [2023-12-21 01:42:09,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:09,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:42:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:09,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:42:09,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:42:09,978 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) [2023-12-21 01:42:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:10,050 INFO L93 Difference]: Finished difference Result 1080 states and 1413 transitions. [2023-12-21 01:42:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:42:10,050 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 [2023-12-21 01:42:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:10,052 INFO L225 Difference]: With dead ends: 1080 [2023-12-21 01:42:10,052 INFO L226 Difference]: Without dead ends: 563 [2023-12-21 01:42:10,054 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 [2023-12-21 01:42:10,054 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 [2023-12-21 01:42:10,055 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] [2023-12-21 01:42:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-12-21 01:42:10,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 509. [2023-12-21 01:42:10,081 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) [2023-12-21 01:42:10,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 661 transitions. [2023-12-21 01:42:10,082 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 661 transitions. Word has length 130 [2023-12-21 01:42:10,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:10,083 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 661 transitions. [2023-12-21 01:42:10,083 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) [2023-12-21 01:42:10,083 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 661 transitions. [2023-12-21 01:42:10,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:42:10,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:10,085 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] [2023-12-21 01:42:10,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 01:42:10,085 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:10,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:10,085 INFO L85 PathProgramCache]: Analyzing trace with hash -458096856, now seen corresponding path program 1 times [2023-12-21 01:42:10,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:10,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727620706] [2023-12-21 01:42:10,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:10,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:10,389 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:10,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:10,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727620706] [2023-12-21 01:42:10,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727620706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:10,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:10,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:42:10,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830914568] [2023-12-21 01:42:10,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:10,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:42:10,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:10,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:42:10,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:42:10,393 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) [2023-12-21 01:42:10,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:10,583 INFO L93 Difference]: Finished difference Result 1531 states and 1991 transitions. [2023-12-21 01:42:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:42:10,583 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 [2023-12-21 01:42:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:10,587 INFO L225 Difference]: With dead ends: 1531 [2023-12-21 01:42:10,587 INFO L226 Difference]: Without dead ends: 1023 [2023-12-21 01:42:10,589 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 [2023-12-21 01:42:10,590 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 [2023-12-21 01:42:10,590 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] [2023-12-21 01:42:10,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2023-12-21 01:42:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 659. [2023-12-21 01:42:10,623 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) [2023-12-21 01:42:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 854 transitions. [2023-12-21 01:42:10,625 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 854 transitions. Word has length 134 [2023-12-21 01:42:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:10,626 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 854 transitions. [2023-12-21 01:42:10,626 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) [2023-12-21 01:42:10,626 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 854 transitions. [2023-12-21 01:42:10,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:42:10,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:10,628 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] [2023-12-21 01:42:10,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 01:42:10,628 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:10,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:10,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1267443482, now seen corresponding path program 1 times [2023-12-21 01:42:10,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:10,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769527416] [2023-12-21 01:42:10,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:10,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:11,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:11,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769527416] [2023-12-21 01:42:11,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769527416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:11,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:11,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 01:42:11,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250521830] [2023-12-21 01:42:11,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:11,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 01:42:11,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:11,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 01:42:11,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:42:11,348 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) [2023-12-21 01:42:11,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:11,782 INFO L93 Difference]: Finished difference Result 1503 states and 1946 transitions. [2023-12-21 01:42:11,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:42:11,783 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 [2023-12-21 01:42:11,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:11,786 INFO L225 Difference]: With dead ends: 1503 [2023-12-21 01:42:11,786 INFO L226 Difference]: Without dead ends: 845 [2023-12-21 01:42:11,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-12-21 01:42:11,787 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 [2023-12-21 01:42:11,787 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] [2023-12-21 01:42:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-21 01:42:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 675. [2023-12-21 01:42:11,827 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) [2023-12-21 01:42:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 870 transitions. [2023-12-21 01:42:11,829 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 870 transitions. Word has length 134 [2023-12-21 01:42:11,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:11,830 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 870 transitions. [2023-12-21 01:42:11,830 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) [2023-12-21 01:42:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 870 transitions. [2023-12-21 01:42:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:42:11,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:11,831 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] [2023-12-21 01:42:11,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 01:42:11,832 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:11,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:11,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1642295471, now seen corresponding path program 1 times [2023-12-21 01:42:11,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:11,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634747904] [2023-12-21 01:42:11,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:11,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:12,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:12,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634747904] [2023-12-21 01:42:12,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634747904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:12,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:12,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:42:12,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696047534] [2023-12-21 01:42:12,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:12,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:42:12,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:12,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:42:12,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:42:12,054 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) [2023-12-21 01:42:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:12,154 INFO L93 Difference]: Finished difference Result 1542 states and 2001 transitions. [2023-12-21 01:42:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:42:12,155 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 [2023-12-21 01:42:12,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:12,157 INFO L225 Difference]: With dead ends: 1542 [2023-12-21 01:42:12,158 INFO L226 Difference]: Without dead ends: 868 [2023-12-21 01:42:12,159 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 [2023-12-21 01:42:12,159 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 [2023-12-21 01:42:12,159 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] [2023-12-21 01:42:12,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2023-12-21 01:42:12,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 703. [2023-12-21 01:42:12,191 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) [2023-12-21 01:42:12,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 905 transitions. [2023-12-21 01:42:12,193 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 905 transitions. Word has length 134 [2023-12-21 01:42:12,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:12,193 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 905 transitions. [2023-12-21 01:42:12,194 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) [2023-12-21 01:42:12,194 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 905 transitions. [2023-12-21 01:42:12,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:42:12,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:12,195 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] [2023-12-21 01:42:12,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 01:42:12,196 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:12,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1843325199, now seen corresponding path program 1 times [2023-12-21 01:42:12,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:12,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641020935] [2023-12-21 01:42:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:12,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:12,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:12,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641020935] [2023-12-21 01:42:12,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641020935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:12,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:12,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:42:12,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418337999] [2023-12-21 01:42:12,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:12,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:42:12,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:12,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:42:12,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:42:12,304 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) [2023-12-21 01:42:12,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:12,368 INFO L93 Difference]: Finished difference Result 1462 states and 1890 transitions. [2023-12-21 01:42:12,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:42:12,369 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 [2023-12-21 01:42:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:12,371 INFO L225 Difference]: With dead ends: 1462 [2023-12-21 01:42:12,371 INFO L226 Difference]: Without dead ends: 760 [2023-12-21 01:42:12,372 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 [2023-12-21 01:42:12,372 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 [2023-12-21 01:42:12,373 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] [2023-12-21 01:42:12,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-12-21 01:42:12,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 712. [2023-12-21 01:42:12,402 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) [2023-12-21 01:42:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 914 transitions. [2023-12-21 01:42:12,403 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 914 transitions. Word has length 134 [2023-12-21 01:42:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:12,404 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 914 transitions. [2023-12-21 01:42:12,404 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) [2023-12-21 01:42:12,404 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 914 transitions. [2023-12-21 01:42:12,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:42:12,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:12,405 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] [2023-12-21 01:42:12,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 01:42:12,405 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:12,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:12,406 INFO L85 PathProgramCache]: Analyzing trace with hash -520136470, now seen corresponding path program 1 times [2023-12-21 01:42:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:12,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848267512] [2023-12-21 01:42:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:12,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:12,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848267512] [2023-12-21 01:42:12,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848267512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:12,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:12,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 01:42:12,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010600925] [2023-12-21 01:42:12,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:12,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 01:42:12,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:12,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 01:42:12,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 01:42:12,899 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) [2023-12-21 01:42:13,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:13,481 INFO L93 Difference]: Finished difference Result 2007 states and 2558 transitions. [2023-12-21 01:42:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:42:13,481 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 [2023-12-21 01:42:13,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:13,484 INFO L225 Difference]: With dead ends: 2007 [2023-12-21 01:42:13,484 INFO L226 Difference]: Without dead ends: 1296 [2023-12-21 01:42:13,485 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 [2023-12-21 01:42:13,486 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 [2023-12-21 01:42:13,486 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] [2023-12-21 01:42:13,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2023-12-21 01:42:13,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 807. [2023-12-21 01:42:13,516 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) [2023-12-21 01:42:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1039 transitions. [2023-12-21 01:42:13,518 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1039 transitions. Word has length 134 [2023-12-21 01:42:13,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:13,518 INFO L495 AbstractCegarLoop]: Abstraction has 807 states and 1039 transitions. [2023-12-21 01:42:13,518 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) [2023-12-21 01:42:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1039 transitions. [2023-12-21 01:42:13,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:42:13,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:13,520 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] [2023-12-21 01:42:13,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 01:42:13,520 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:13,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:13,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1329483096, now seen corresponding path program 1 times [2023-12-21 01:42:13,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:13,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653967011] [2023-12-21 01:42:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:13,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:13,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:13,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653967011] [2023-12-21 01:42:13,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653967011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:13,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:13,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:42:13,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053286459] [2023-12-21 01:42:13,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:13,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:42:13,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:13,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:42:13,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:42:13,779 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) [2023-12-21 01:42:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:13,992 INFO L93 Difference]: Finished difference Result 1913 states and 2464 transitions. [2023-12-21 01:42:13,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:42:13,993 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 [2023-12-21 01:42:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:13,996 INFO L225 Difference]: With dead ends: 1913 [2023-12-21 01:42:13,996 INFO L226 Difference]: Without dead ends: 1106 [2023-12-21 01:42:13,997 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 [2023-12-21 01:42:13,998 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 [2023-12-21 01:42:13,998 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] [2023-12-21 01:42:14,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2023-12-21 01:42:14,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 894. [2023-12-21 01:42:14,036 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) [2023-12-21 01:42:14,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1147 transitions. [2023-12-21 01:42:14,038 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1147 transitions. Word has length 134 [2023-12-21 01:42:14,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:14,038 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1147 transitions. [2023-12-21 01:42:14,039 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) [2023-12-21 01:42:14,039 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1147 transitions. [2023-12-21 01:42:14,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:42:14,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:14,040 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] [2023-12-21 01:42:14,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 01:42:14,040 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:14,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:14,041 INFO L85 PathProgramCache]: Analyzing trace with hash -97434644, now seen corresponding path program 1 times [2023-12-21 01:42:14,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:14,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879849114] [2023-12-21 01:42:14,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:14,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 01:42:14,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:14,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879849114] [2023-12-21 01:42:14,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879849114] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 01:42:14,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998568974] [2023-12-21 01:42:14,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:14,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:14,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:14,312 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) [2023-12-21 01:42:14,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 01:42:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:14,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 01:42:14,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:14,604 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 [2023-12-21 01:42:14,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:14,628 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 [2023-12-21 01:42:14,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:14,764 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 [2023-12-21 01:42:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 01:42:14,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:42:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:15,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998568974] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 01:42:15,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:42:15,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7, 15] total 24 [2023-12-21 01:42:15,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217298750] [2023-12-21 01:42:15,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:15,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 01:42:15,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:15,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 01:42:15,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-12-21 01:42:15,049 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) [2023-12-21 01:42:15,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:15,596 INFO L93 Difference]: Finished difference Result 1987 states and 2536 transitions. [2023-12-21 01:42:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 01:42:15,597 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 [2023-12-21 01:42:15,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:15,600 INFO L225 Difference]: With dead ends: 1987 [2023-12-21 01:42:15,600 INFO L226 Difference]: Without dead ends: 1094 [2023-12-21 01:42:15,603 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 [2023-12-21 01:42:15,603 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:42:15,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1370 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 01:42:15,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2023-12-21 01:42:15,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 940. [2023-12-21 01:42:15,646 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) [2023-12-21 01:42:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1202 transitions. [2023-12-21 01:42:15,648 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1202 transitions. Word has length 134 [2023-12-21 01:42:15,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:15,648 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1202 transitions. [2023-12-21 01:42:15,649 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) [2023-12-21 01:42:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1202 transitions. [2023-12-21 01:42:15,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:42:15,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:15,650 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] [2023-12-21 01:42:15,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 01:42:15,857 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 [2023-12-21 01:42:15,859 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:15,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:15,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1290327162, now seen corresponding path program 1 times [2023-12-21 01:42:15,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:15,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625566403] [2023-12-21 01:42:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:15,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:15,877 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:15,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860127421] [2023-12-21 01:42:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:15,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:15,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:15,897 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) [2023-12-21 01:42:15,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 01:42:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:16,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 01:42:16,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:16,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:16,075 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 [2023-12-21 01:42:16,108 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 [2023-12-21 01:42:16,163 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 [2023-12-21 01:42:16,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:16,176 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 [2023-12-21 01:42:16,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:16,397 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 [2023-12-21 01:42:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 288 proven. 24 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-21 01:42:16,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:42:16,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:16,755 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 [2023-12-21 01:42:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 01:42:16,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:16,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625566403] [2023-12-21 01:42:16,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:16,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860127421] [2023-12-21 01:42:16,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860127421] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 01:42:16,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 01:42:16,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-21 01:42:16,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083210335] [2023-12-21 01:42:16,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 01:42:16,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 01:42:16,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:16,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 01:42:16,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2023-12-21 01:42:16,772 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) [2023-12-21 01:42:17,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:17,829 INFO L93 Difference]: Finished difference Result 2244 states and 2841 transitions. [2023-12-21 01:42:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 01:42:17,840 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 [2023-12-21 01:42:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:17,846 INFO L225 Difference]: With dead ends: 2244 [2023-12-21 01:42:17,846 INFO L226 Difference]: Without dead ends: 1305 [2023-12-21 01:42:17,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=469, Invalid=1511, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 01:42:17,848 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 486 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:42:17,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 719 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 01:42:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-12-21 01:42:17,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 991. [2023-12-21 01:42:17,894 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) [2023-12-21 01:42:17,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1262 transitions. [2023-12-21 01:42:17,896 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1262 transitions. Word has length 134 [2023-12-21 01:42:17,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:17,896 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1262 transitions. [2023-12-21 01:42:17,896 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) [2023-12-21 01:42:17,896 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1262 transitions. [2023-12-21 01:42:17,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:42:17,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:17,898 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, 1, 1, 1, 1] [2023-12-21 01:42:17,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:18,104 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 [2023-12-21 01:42:18,105 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:18,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:18,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2099673788, now seen corresponding path program 1 times [2023-12-21 01:42:18,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:18,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869585157] [2023-12-21 01:42:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:18,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:18,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:18,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288213790] [2023-12-21 01:42:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:18,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:18,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:18,162 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) [2023-12-21 01:42:18,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 01:42:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:18,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 01:42:18,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:18,336 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 [2023-12-21 01:42:18,342 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 [2023-12-21 01:42:18,361 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:18,361 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 [2023-12-21 01:42:18,366 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 [2023-12-21 01:42:18,442 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 [2023-12-21 01:42:18,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:18,446 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 [2023-12-21 01:42:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:18,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:42:18,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:18,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869585157] [2023-12-21 01:42:18,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:18,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288213790] [2023-12-21 01:42:18,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288213790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:18,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:18,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:42:18,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015553613] [2023-12-21 01:42:18,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:18,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:42:18,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:18,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:42:18,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:42:18,455 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) [2023-12-21 01:42:18,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:18,783 INFO L93 Difference]: Finished difference Result 2405 states and 3027 transitions. [2023-12-21 01:42:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:42:18,784 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 [2023-12-21 01:42:18,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:18,788 INFO L225 Difference]: With dead ends: 2405 [2023-12-21 01:42:18,788 INFO L226 Difference]: Without dead ends: 1415 [2023-12-21 01:42:18,789 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 [2023-12-21 01:42:18,790 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:42:18,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 440 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:42:18,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2023-12-21 01:42:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 990. [2023-12-21 01:42:18,835 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) [2023-12-21 01:42:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1246 transitions. [2023-12-21 01:42:18,837 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1246 transitions. Word has length 134 [2023-12-21 01:42:18,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:18,837 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1246 transitions. [2023-12-21 01:42:18,837 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) [2023-12-21 01:42:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1246 transitions. [2023-12-21 01:42:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 01:42:18,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:18,838 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] [2023-12-21 01:42:18,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 01:42:19,045 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 [2023-12-21 01:42:19,045 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:19,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:19,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1820441519, now seen corresponding path program 1 times [2023-12-21 01:42:19,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:19,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734123537] [2023-12-21 01:42:19,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:19,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:19,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:19,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1775199686] [2023-12-21 01:42:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:19,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:19,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:19,078 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) [2023-12-21 01:42:19,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 01:42:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:19,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 01:42:19,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:19,241 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 [2023-12-21 01:42:19,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:19,252 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 [2023-12-21 01:42:19,290 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 01:42:19,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:42:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:19,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:19,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734123537] [2023-12-21 01:42:19,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:19,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775199686] [2023-12-21 01:42:19,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775199686] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 01:42:19,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 01:42:19,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-12-21 01:42:19,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161939024] [2023-12-21 01:42:19,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:19,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:42:19,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:19,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:42:19,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-21 01:42:19,374 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) [2023-12-21 01:42:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:19,581 INFO L93 Difference]: Finished difference Result 2192 states and 2761 transitions. [2023-12-21 01:42:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 01:42:19,581 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 [2023-12-21 01:42:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:19,585 INFO L225 Difference]: With dead ends: 2192 [2023-12-21 01:42:19,585 INFO L226 Difference]: Without dead ends: 1203 [2023-12-21 01:42:19,586 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 [2023-12-21 01:42:19,587 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 [2023-12-21 01:42:19,587 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] [2023-12-21 01:42:19,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-12-21 01:42:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1045. [2023-12-21 01:42:19,635 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) [2023-12-21 01:42:19,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1317 transitions. [2023-12-21 01:42:19,637 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1317 transitions. Word has length 134 [2023-12-21 01:42:19,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:19,637 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1317 transitions. [2023-12-21 01:42:19,638 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) [2023-12-21 01:42:19,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1317 transitions. [2023-12-21 01:42:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 01:42:19,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:19,639 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] [2023-12-21 01:42:19,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:19,846 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 [2023-12-21 01:42:19,847 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:19,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:19,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1137489959, now seen corresponding path program 1 times [2023-12-21 01:42:19,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:19,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300575548] [2023-12-21 01:42:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:19,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:19,879 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:19,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978248718] [2023-12-21 01:42:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:19,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:19,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:19,880 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) [2023-12-21 01:42:19,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 01:42:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:20,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 01:42:20,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:20,053 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 [2023-12-21 01:42:20,060 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 [2023-12-21 01:42:20,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:20,073 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 [2023-12-21 01:42:20,075 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 [2023-12-21 01:42:20,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:20,142 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 [2023-12-21 01:42:20,145 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 [2023-12-21 01:42:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:20,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:42:20,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:20,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300575548] [2023-12-21 01:42:20,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:20,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978248718] [2023-12-21 01:42:20,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978248718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:20,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:20,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 01:42:20,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994221886] [2023-12-21 01:42:20,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:20,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 01:42:20,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:20,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 01:42:20,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 01:42:20,154 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) [2023-12-21 01:42:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:20,477 INFO L93 Difference]: Finished difference Result 2402 states and 2991 transitions. [2023-12-21 01:42:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:42:20,478 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 [2023-12-21 01:42:20,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:20,481 INFO L225 Difference]: With dead ends: 2402 [2023-12-21 01:42:20,481 INFO L226 Difference]: Without dead ends: 1305 [2023-12-21 01:42:20,483 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 [2023-12-21 01:42:20,483 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 01:42:20,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 550 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 01:42:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-12-21 01:42:20,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 926. [2023-12-21 01:42:20,526 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) [2023-12-21 01:42:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1154 transitions. [2023-12-21 01:42:20,528 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1154 transitions. Word has length 135 [2023-12-21 01:42:20,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:20,528 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1154 transitions. [2023-12-21 01:42:20,528 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) [2023-12-21 01:42:20,528 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1154 transitions. [2023-12-21 01:42:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 01:42:20,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:20,529 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] [2023-12-21 01:42:20,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:20,739 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 [2023-12-21 01:42:20,739 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:20,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:20,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1071134778, now seen corresponding path program 1 times [2023-12-21 01:42:20,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:20,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071628189] [2023-12-21 01:42:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:20,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 01:42:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 01:42:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 01:42:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 01:42:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 01:42:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 01:42:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 01:42:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 01:42:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 01:42:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 01:42:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 01:42:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 01:42:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 01:42:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 01:42:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 01:42:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 01:42:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 01:42:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:21,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:21,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071628189] [2023-12-21 01:42:21,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071628189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:21,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:21,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:42:21,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892044060] [2023-12-21 01:42:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:21,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:42:21,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:21,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:42:21,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:42:21,113 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) [2023-12-21 01:42:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:21,324 INFO L93 Difference]: Finished difference Result 1437 states and 1739 transitions. [2023-12-21 01:42:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:42:21,324 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 [2023-12-21 01:42:21,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:21,328 INFO L225 Difference]: With dead ends: 1437 [2023-12-21 01:42:21,328 INFO L226 Difference]: Without dead ends: 1435 [2023-12-21 01:42:21,329 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 [2023-12-21 01:42:21,330 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 [2023-12-21 01:42:21,331 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] [2023-12-21 01:42:21,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2023-12-21 01:42:21,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1431. [2023-12-21 01:42:21,422 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) [2023-12-21 01:42:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1728 transitions. [2023-12-21 01:42:21,425 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1728 transitions. Word has length 136 [2023-12-21 01:42:21,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:21,425 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 1728 transitions. [2023-12-21 01:42:21,426 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) [2023-12-21 01:42:21,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1728 transitions. [2023-12-21 01:42:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 01:42:21,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:21,427 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] [2023-12-21 01:42:21,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 01:42:21,427 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:21,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:21,428 INFO L85 PathProgramCache]: Analyzing trace with hash 706219203, now seen corresponding path program 1 times [2023-12-21 01:42:21,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:21,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433467367] [2023-12-21 01:42:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:21,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:21,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:21,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622340868] [2023-12-21 01:42:21,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:21,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:21,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:21,443 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) [2023-12-21 01:42:21,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 01:42:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:21,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 01:42:21,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:21,648 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 [2023-12-21 01:42:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:21,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:42:21,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:21,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433467367] [2023-12-21 01:42:21,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:21,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622340868] [2023-12-21 01:42:21,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622340868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:21,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:21,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:42:21,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017049135] [2023-12-21 01:42:21,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:21,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:42:21,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:21,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:42:21,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:42:21,656 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) [2023-12-21 01:42:21,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:21,824 INFO L93 Difference]: Finished difference Result 2928 states and 3529 transitions. [2023-12-21 01:42:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:42:21,824 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 [2023-12-21 01:42:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:21,828 INFO L225 Difference]: With dead ends: 2928 [2023-12-21 01:42:21,828 INFO L226 Difference]: Without dead ends: 1498 [2023-12-21 01:42:21,830 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 [2023-12-21 01:42:21,830 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 51 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-21 01:42:21,830 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] [2023-12-21 01:42:21,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2023-12-21 01:42:21,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1415. [2023-12-21 01:42:21,945 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) [2023-12-21 01:42:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1698 transitions. [2023-12-21 01:42:21,947 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1698 transitions. Word has length 136 [2023-12-21 01:42:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:21,947 INFO L495 AbstractCegarLoop]: Abstraction has 1415 states and 1698 transitions. [2023-12-21 01:42:21,947 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) [2023-12-21 01:42:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1698 transitions. [2023-12-21 01:42:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 01:42:21,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:21,949 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] [2023-12-21 01:42:21,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:22,156 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 [2023-12-21 01:42:22,156 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:22,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash -235527550, now seen corresponding path program 1 times [2023-12-21 01:42:22,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:22,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318270830] [2023-12-21 01:42:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:22,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:22,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:22,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428546947] [2023-12-21 01:42:22,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:22,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:22,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:22,176 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) [2023-12-21 01:42:22,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 01:42:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:22,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 01:42:22,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:22,384 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 [2023-12-21 01:42:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:22,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:42:22,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:22,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318270830] [2023-12-21 01:42:22,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:22,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428546947] [2023-12-21 01:42:22,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428546947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:22,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:22,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:42:22,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131744207] [2023-12-21 01:42:22,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:22,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:42:22,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:22,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:42:22,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:42:22,391 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) [2023-12-21 01:42:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:22,511 INFO L93 Difference]: Finished difference Result 2533 states and 3048 transitions. [2023-12-21 01:42:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:42:22,511 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 [2023-12-21 01:42:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:22,514 INFO L225 Difference]: With dead ends: 2533 [2023-12-21 01:42:22,514 INFO L226 Difference]: Without dead ends: 1119 [2023-12-21 01:42:22,515 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 [2023-12-21 01:42:22,516 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 [2023-12-21 01:42:22,516 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] [2023-12-21 01:42:22,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2023-12-21 01:42:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1117. [2023-12-21 01:42:22,588 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) [2023-12-21 01:42:22,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1332 transitions. [2023-12-21 01:42:22,590 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1332 transitions. Word has length 137 [2023-12-21 01:42:22,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:22,590 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1332 transitions. [2023-12-21 01:42:22,590 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) [2023-12-21 01:42:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1332 transitions. [2023-12-21 01:42:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 01:42:22,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:22,591 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] [2023-12-21 01:42:22,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:22,798 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 [2023-12-21 01:42:22,799 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:22,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:22,799 INFO L85 PathProgramCache]: Analyzing trace with hash 17111821, now seen corresponding path program 1 times [2023-12-21 01:42:22,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:22,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398301643] [2023-12-21 01:42:22,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:22,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:22,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:22,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101251266] [2023-12-21 01:42:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:22,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:22,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:22,819 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) [2023-12-21 01:42:22,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 01:42:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:22,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 01:42:22,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:23,026 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 [2023-12-21 01:42:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:23,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:42:23,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:23,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398301643] [2023-12-21 01:42:23,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:23,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101251266] [2023-12-21 01:42:23,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101251266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:23,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:23,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:42:23,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266391023] [2023-12-21 01:42:23,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:23,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:42:23,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:42:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:42:23,035 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) [2023-12-21 01:42:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:23,161 INFO L93 Difference]: Finished difference Result 2136 states and 2541 transitions. [2023-12-21 01:42:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:42:23,162 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 [2023-12-21 01:42:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:23,165 INFO L225 Difference]: With dead ends: 2136 [2023-12-21 01:42:23,165 INFO L226 Difference]: Without dead ends: 1048 [2023-12-21 01:42:23,166 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 [2023-12-21 01:42:23,166 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 [2023-12-21 01:42:23,167 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] [2023-12-21 01:42:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-12-21 01:42:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1042. [2023-12-21 01:42:23,238 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) [2023-12-21 01:42:23,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1235 transitions. [2023-12-21 01:42:23,239 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1235 transitions. Word has length 138 [2023-12-21 01:42:23,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:23,240 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1235 transitions. [2023-12-21 01:42:23,240 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) [2023-12-21 01:42:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1235 transitions. [2023-12-21 01:42:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:42:23,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:23,241 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] [2023-12-21 01:42:23,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:23,447 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 [2023-12-21 01:42:23,447 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:23,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:23,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1021407447, now seen corresponding path program 1 times [2023-12-21 01:42:23,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:23,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362602937] [2023-12-21 01:42:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:23,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:23,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:23,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86212435] [2023-12-21 01:42:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:23,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:23,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:23,476 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) [2023-12-21 01:42:23,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 01:42:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:23,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 01:42:23,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:23,726 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 [2023-12-21 01:42:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:23,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:42:23,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:23,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362602937] [2023-12-21 01:42:23,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:23,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86212435] [2023-12-21 01:42:23,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86212435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:23,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:23,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:42:23,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149471483] [2023-12-21 01:42:23,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:23,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:42:23,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:23,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:42:23,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:42:23,737 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) [2023-12-21 01:42:23,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:23,865 INFO L93 Difference]: Finished difference Result 2013 states and 2373 transitions. [2023-12-21 01:42:23,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 01:42:23,865 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 [2023-12-21 01:42:23,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:23,869 INFO L225 Difference]: With dead ends: 2013 [2023-12-21 01:42:23,869 INFO L226 Difference]: Without dead ends: 1000 [2023-12-21 01:42:23,872 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 [2023-12-21 01:42:23,873 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 01:42:23,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 431 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 01:42:23,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-12-21 01:42:23,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 1000. [2023-12-21 01:42:23,944 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) [2023-12-21 01:42:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1165 transitions. [2023-12-21 01:42:23,946 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1165 transitions. Word has length 139 [2023-12-21 01:42:23,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:23,946 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1165 transitions. [2023-12-21 01:42:23,946 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) [2023-12-21 01:42:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1165 transitions. [2023-12-21 01:42:23,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:42:23,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:23,949 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] [2023-12-21 01:42:23,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:24,156 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 [2023-12-21 01:42:24,156 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:24,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash 383738798, now seen corresponding path program 1 times [2023-12-21 01:42:24,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:24,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783834754] [2023-12-21 01:42:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:24,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:24,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:24,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082895253] [2023-12-21 01:42:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:24,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:24,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:24,172 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) [2023-12-21 01:42:24,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 01:42:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:24,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 01:42:24,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:24,377 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 [2023-12-21 01:42:24,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:24,426 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 [2023-12-21 01:42:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 01:42:24,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:42:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783834754] [2023-12-21 01:42:24,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:24,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082895253] [2023-12-21 01:42:24,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082895253] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 01:42:24,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 01:42:24,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2023-12-21 01:42:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534550181] [2023-12-21 01:42:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:24,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:42:24,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:42:24,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 01:42:24,563 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) [2023-12-21 01:42:24,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:24,769 INFO L93 Difference]: Finished difference Result 1311 states and 1527 transitions. [2023-12-21 01:42:24,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:42:24,769 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 [2023-12-21 01:42:24,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:24,773 INFO L225 Difference]: With dead ends: 1311 [2023-12-21 01:42:24,773 INFO L226 Difference]: Without dead ends: 1309 [2023-12-21 01:42:24,773 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 [2023-12-21 01:42:24,773 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 [2023-12-21 01:42:24,773 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] [2023-12-21 01:42:24,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2023-12-21 01:42:24,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1305. [2023-12-21 01:42:24,943 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) [2023-12-21 01:42:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1519 transitions. [2023-12-21 01:42:24,946 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1519 transitions. Word has length 139 [2023-12-21 01:42:24,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:24,947 INFO L495 AbstractCegarLoop]: Abstraction has 1305 states and 1519 transitions. [2023-12-21 01:42:24,947 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) [2023-12-21 01:42:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1519 transitions. [2023-12-21 01:42:24,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:42:24,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:24,948 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] [2023-12-21 01:42:24,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:25,155 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 [2023-12-21 01:42:25,156 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:25,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:25,156 INFO L85 PathProgramCache]: Analyzing trace with hash 440997100, now seen corresponding path program 1 times [2023-12-21 01:42:25,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:25,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903816407] [2023-12-21 01:42:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:25,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:25,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:25,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109340689] [2023-12-21 01:42:25,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:25,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:25,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:25,172 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) [2023-12-21 01:42:25,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 01:42:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:25,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 01:42:25,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:25,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:25,823 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 [2023-12-21 01:42:26,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:26,083 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 [2023-12-21 01:42:26,086 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 [2023-12-21 01:42:26,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:26,119 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 [2023-12-21 01:42:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-21 01:42:26,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:42:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:26,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:26,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903816407] [2023-12-21 01:42:26,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:26,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109340689] [2023-12-21 01:42:26,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109340689] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 01:42:26,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 01:42:26,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-12-21 01:42:26,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661456266] [2023-12-21 01:42:26,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:26,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:42:26,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:26,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:42:26,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-21 01:42:26,606 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) [2023-12-21 01:42:28,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:28,040 INFO L93 Difference]: Finished difference Result 2924 states and 3397 transitions. [2023-12-21 01:42:28,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:42:28,049 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 [2023-12-21 01:42:28,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:28,053 INFO L225 Difference]: With dead ends: 2924 [2023-12-21 01:42:28,053 INFO L226 Difference]: Without dead ends: 1648 [2023-12-21 01:42:28,055 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 [2023-12-21 01:42:28,055 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 132 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2023-12-21 01:42:28,055 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] [2023-12-21 01:42:28,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2023-12-21 01:42:28,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1422. [2023-12-21 01:42:28,216 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) [2023-12-21 01:42:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 1659 transitions. [2023-12-21 01:42:28,218 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 1659 transitions. Word has length 139 [2023-12-21 01:42:28,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:28,218 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 1659 transitions. [2023-12-21 01:42:28,218 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) [2023-12-21 01:42:28,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 1659 transitions. [2023-12-21 01:42:28,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:42:28,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:28,220 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] [2023-12-21 01:42:28,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:28,428 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 [2023-12-21 01:42:28,429 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:28,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:28,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2078962834, now seen corresponding path program 1 times [2023-12-21 01:42:28,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:28,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93260053] [2023-12-21 01:42:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:28,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:28,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:28,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507782565] [2023-12-21 01:42:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:28,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:28,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:28,447 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) [2023-12-21 01:42:28,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 01:42:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:28,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 01:42:28,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:28,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:28,665 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 [2023-12-21 01:42:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:28,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:42:28,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:28,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93260053] [2023-12-21 01:42:28,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:28,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507782565] [2023-12-21 01:42:28,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507782565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:28,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:28,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:42:28,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954621813] [2023-12-21 01:42:28,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:28,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:42:28,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:28,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:42:28,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:42:28,673 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) [2023-12-21 01:42:28,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:28,946 INFO L93 Difference]: Finished difference Result 3607 states and 4158 transitions. [2023-12-21 01:42:28,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 01:42:28,947 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 [2023-12-21 01:42:28,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:28,953 INFO L225 Difference]: With dead ends: 3607 [2023-12-21 01:42:28,953 INFO L226 Difference]: Without dead ends: 2214 [2023-12-21 01:42:28,955 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 [2023-12-21 01:42:28,956 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 [2023-12-21 01:42:28,956 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] [2023-12-21 01:42:28,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2023-12-21 01:42:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1522. [2023-12-21 01:42:29,075 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) [2023-12-21 01:42:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1768 transitions. [2023-12-21 01:42:29,077 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1768 transitions. Word has length 139 [2023-12-21 01:42:29,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:29,077 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 1768 transitions. [2023-12-21 01:42:29,077 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) [2023-12-21 01:42:29,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1768 transitions. [2023-12-21 01:42:29,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:42:29,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:29,079 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] [2023-12-21 01:42:29,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:29,286 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 [2023-12-21 01:42:29,286 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:29,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:29,286 INFO L85 PathProgramCache]: Analyzing trace with hash 249725292, now seen corresponding path program 1 times [2023-12-21 01:42:29,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:29,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450048123] [2023-12-21 01:42:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:29,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:29,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:29,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129337947] [2023-12-21 01:42:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:29,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:29,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:29,302 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) [2023-12-21 01:42:29,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 01:42:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:29,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 01:42:29,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:29,793 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 [2023-12-21 01:42:29,836 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 [2023-12-21 01:42:29,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:29,914 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 [2023-12-21 01:42:31,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:31,375 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 [2023-12-21 01:42:31,380 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 [2023-12-21 01:42:31,854 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:31,854 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 [2023-12-21 01:42:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-21 01:42:32,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:42:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:37,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:37,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450048123] [2023-12-21 01:42:37,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:37,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129337947] [2023-12-21 01:42:37,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129337947] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 01:42:37,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 01:42:37,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2023-12-21 01:42:37,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063308481] [2023-12-21 01:42:37,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:37,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 01:42:37,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 01:42:37,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2023-12-21 01:42:37,457 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) [2023-12-21 01:42:44,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:44,968 INFO L93 Difference]: Finished difference Result 3172 states and 3672 transitions. [2023-12-21 01:42:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 01:42:44,969 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 [2023-12-21 01:42:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:44,978 INFO L225 Difference]: With dead ends: 3172 [2023-12-21 01:42:44,978 INFO L226 Difference]: Without dead ends: 1679 [2023-12-21 01:42:44,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2023-12-21 01:42:44,981 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 [2023-12-21 01:42:44,981 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] [2023-12-21 01:42:44,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2023-12-21 01:42:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1523. [2023-12-21 01:42:45,175 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) [2023-12-21 01:42:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1769 transitions. [2023-12-21 01:42:45,177 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1769 transitions. Word has length 139 [2023-12-21 01:42:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:45,177 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 1769 transitions. [2023-12-21 01:42:45,178 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) [2023-12-21 01:42:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1769 transitions. [2023-12-21 01:42:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:42:45,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:45,180 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] [2023-12-21 01:42:45,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:45,389 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 [2023-12-21 01:42:45,390 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:45,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:45,390 INFO L85 PathProgramCache]: Analyzing trace with hash 306983594, now seen corresponding path program 1 times [2023-12-21 01:42:45,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:45,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585617028] [2023-12-21 01:42:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:45,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:45,404 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:45,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451865611] [2023-12-21 01:42:45,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:45,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:45,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:45,418 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) [2023-12-21 01:42:45,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 01:42:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:45,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 01:42:45,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:45,655 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 [2023-12-21 01:42:45,680 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:45,680 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 [2023-12-21 01:42:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:45,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:42:45,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:45,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585617028] [2023-12-21 01:42:45,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:45,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451865611] [2023-12-21 01:42:45,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451865611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:45,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:45,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 01:42:45,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941243846] [2023-12-21 01:42:45,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:45,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 01:42:45,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:45,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 01:42:45,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 01:42:45,699 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) [2023-12-21 01:42:45,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:45,941 INFO L93 Difference]: Finished difference Result 1581 states and 1836 transitions. [2023-12-21 01:42:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 01:42:45,941 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 [2023-12-21 01:42:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:45,945 INFO L225 Difference]: With dead ends: 1581 [2023-12-21 01:42:45,945 INFO L226 Difference]: Without dead ends: 1579 [2023-12-21 01:42:45,945 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 [2023-12-21 01:42:45,945 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 [2023-12-21 01:42:45,946 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] [2023-12-21 01:42:45,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-12-21 01:42:46,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1571. [2023-12-21 01:42:46,053 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) [2023-12-21 01:42:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 1824 transitions. [2023-12-21 01:42:46,054 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 1824 transitions. Word has length 139 [2023-12-21 01:42:46,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:46,055 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 1824 transitions. [2023-12-21 01:42:46,055 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) [2023-12-21 01:42:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 1824 transitions. [2023-12-21 01:42:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:42:46,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:46,057 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] [2023-12-21 01:42:46,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:46,264 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 [2023-12-21 01:42:46,264 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:46,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1930742162, now seen corresponding path program 1 times [2023-12-21 01:42:46,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:46,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7840874] [2023-12-21 01:42:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:46,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:46,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:46,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611315503] [2023-12-21 01:42:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:46,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:46,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:46,292 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) [2023-12-21 01:42:46,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 01:42:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:46,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 01:42:46,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:46,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:46,534 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 [2023-12-21 01:42:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:46,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 01:42:46,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:46,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7840874] [2023-12-21 01:42:46,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:46,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611315503] [2023-12-21 01:42:46,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611315503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 01:42:46,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 01:42:46,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 01:42:46,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195454851] [2023-12-21 01:42:46,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:46,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 01:42:46,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:46,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 01:42:46,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 01:42:46,543 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) [2023-12-21 01:42:46,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:46,855 INFO L93 Difference]: Finished difference Result 3640 states and 4175 transitions. [2023-12-21 01:42:46,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 01:42:46,856 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 [2023-12-21 01:42:46,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:46,859 INFO L225 Difference]: With dead ends: 3640 [2023-12-21 01:42:46,859 INFO L226 Difference]: Without dead ends: 2110 [2023-12-21 01:42:46,861 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 [2023-12-21 01:42:46,862 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 [2023-12-21 01:42:46,863 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] [2023-12-21 01:42:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2023-12-21 01:42:46,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1241. [2023-12-21 01:42:46,979 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) [2023-12-21 01:42:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1443 transitions. [2023-12-21 01:42:46,981 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1443 transitions. Word has length 139 [2023-12-21 01:42:46,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:46,981 INFO L495 AbstractCegarLoop]: Abstraction has 1241 states and 1443 transitions. [2023-12-21 01:42:46,981 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) [2023-12-21 01:42:46,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1443 transitions. [2023-12-21 01:42:46,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:42:46,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:46,985 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, 1, 1, 1, 1, 1] [2023-12-21 01:42:46,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 01:42:47,191 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 [2023-12-21 01:42:47,191 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:47,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash -155734800, now seen corresponding path program 1 times [2023-12-21 01:42:47,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:47,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976929925] [2023-12-21 01:42:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:47,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:47,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:47,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66205229] [2023-12-21 01:42:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:47,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:47,207 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) [2023-12-21 01:42:47,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 01:42:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:47,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 01:42:47,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:47,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:47,735 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 [2023-12-21 01:42:49,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:49,539 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 [2023-12-21 01:42:49,543 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 [2023-12-21 01:42:49,729 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 [2023-12-21 01:42:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-21 01:42:50,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:42:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:42:52,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:42:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976929925] [2023-12-21 01:42:52,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:42:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66205229] [2023-12-21 01:42:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66205229] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 01:42:52,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 01:42:52,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-12-21 01:42:52,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995577984] [2023-12-21 01:42:52,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:42:52,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:42:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:42:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:42:52,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-21 01:42:52,836 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) [2023-12-21 01:42:58,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:42:58,553 INFO L93 Difference]: Finished difference Result 2593 states and 2998 transitions. [2023-12-21 01:42:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:42:58,554 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 [2023-12-21 01:42:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:42:58,556 INFO L225 Difference]: With dead ends: 2593 [2023-12-21 01:42:58,556 INFO L226 Difference]: Without dead ends: 1393 [2023-12-21 01:42:58,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-12-21 01:42:58,558 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 91 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s 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, 4.4s IncrementalHoareTripleChecker+Time [2023-12-21 01:42:58,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 528 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-21 01:42:58,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2023-12-21 01:42:58,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1191. [2023-12-21 01:42:58,635 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) [2023-12-21 01:42:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1381 transitions. [2023-12-21 01:42:58,636 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1381 transitions. Word has length 139 [2023-12-21 01:42:58,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:42:58,636 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1381 transitions. [2023-12-21 01:42:58,636 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) [2023-12-21 01:42:58,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1381 transitions. [2023-12-21 01:42:58,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 01:42:58,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:42:58,638 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] [2023-12-21 01:42:58,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-21 01:42:58,844 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 [2023-12-21 01:42:58,845 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:42:58,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:42:58,845 INFO L85 PathProgramCache]: Analyzing trace with hash -347006608, now seen corresponding path program 1 times [2023-12-21 01:42:58,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:42:58,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440636985] [2023-12-21 01:42:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:58,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:42:58,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:42:58,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325404081] [2023-12-21 01:42:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:42:58,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:42:58,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:42:58,862 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) [2023-12-21 01:42:58,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 01:42:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:42:59,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 01:42:59,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:42:59,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:59,371 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 [2023-12-21 01:42:59,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:42:59,984 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 [2023-12-21 01:42:59,986 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 [2023-12-21 01:43:00,196 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 [2023-12-21 01:43:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-21 01:43:00,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:43:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:43:03,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:43:03,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440636985] [2023-12-21 01:43:03,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:43:03,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325404081] [2023-12-21 01:43:03,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325404081] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 01:43:03,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 01:43:03,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-12-21 01:43:03,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802037218] [2023-12-21 01:43:03,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:43:03,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:43:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:43:03,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:43:03,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-21 01:43:03,055 INFO L87 Difference]: Start difference. First operand 1191 states and 1381 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) [2023-12-21 01:43:09,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:43:09,115 INFO L93 Difference]: Finished difference Result 2534 states and 2926 transitions. [2023-12-21 01:43:09,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:43:09,116 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 [2023-12-21 01:43:09,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:43:09,118 INFO L225 Difference]: With dead ends: 2534 [2023-12-21 01:43:09,118 INFO L226 Difference]: Without dead ends: 1344 [2023-12-21 01:43:09,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-12-21 01:43:09,123 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 121 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-21 01:43:09,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 643 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-21 01:43:09,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2023-12-21 01:43:09,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1294. [2023-12-21 01:43:09,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1109 states have (on average 1.1163210099188459) internal successors, (1238), 1117 states have internal predecessors, (1238), 128 states have call successors, (128), 56 states have call predecessors, (128), 56 states have return successors, (128), 120 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-21 01:43:09,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1494 transitions. [2023-12-21 01:43:09,232 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1494 transitions. Word has length 139 [2023-12-21 01:43:09,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:43:09,233 INFO L495 AbstractCegarLoop]: Abstraction has 1294 states and 1494 transitions. [2023-12-21 01:43:09,233 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) [2023-12-21 01:43:09,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1494 transitions. [2023-12-21 01:43:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 01:43:09,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 01:43:09,234 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, 1, 1, 1, 1] [2023-12-21 01:43:09,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-21 01:43:09,442 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 [2023-12-21 01:43:09,443 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 01:43:09,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 01:43:09,443 INFO L85 PathProgramCache]: Analyzing trace with hash -821553716, now seen corresponding path program 1 times [2023-12-21 01:43:09,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 01:43:09,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235625736] [2023-12-21 01:43:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:43:09,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 01:43:09,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 01:43:09,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884499767] [2023-12-21 01:43:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 01:43:09,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 01:43:09,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 01:43:09,458 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 01:43:09,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 01:43:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 01:43:10,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 01:43:10,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 01:43:10,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:43:10,307 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 [2023-12-21 01:43:10,993 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:43:10,993 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 [2023-12-21 01:43:11,000 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 [2023-12-21 01:43:11,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 01:43:11,358 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 49 treesize of output 25 [2023-12-21 01:43:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-12-21 01:43:11,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 01:43:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 01:43:14,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 01:43:14,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235625736] [2023-12-21 01:43:14,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 01:43:14,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884499767] [2023-12-21 01:43:14,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884499767] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 01:43:14,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 01:43:14,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-12-21 01:43:14,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686693181] [2023-12-21 01:43:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 01:43:14,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 01:43:14,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 01:43:14,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 01:43:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-21 01:43:14,897 INFO L87 Difference]: Start difference. First operand 1294 states and 1494 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2023-12-21 01:43:20,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 01:43:20,430 INFO L93 Difference]: Finished difference Result 2629 states and 3029 transitions. [2023-12-21 01:43:20,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 01:43:20,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 143 [2023-12-21 01:43:20,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 01:43:20,431 INFO L225 Difference]: With dead ends: 2629 [2023-12-21 01:43:20,431 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 01:43:20,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-12-21 01:43:20,455 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 72 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-21 01:43:20,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 588 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-21 01:43:20,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 01:43:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 01:43:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 01:43:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 01:43:20,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2023-12-21 01:43:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 01:43:20,458 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 01:43:20,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2023-12-21 01:43:20,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 01:43:20,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 01:43:20,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 01:43:20,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 01:43:20,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-21 01:43:20,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-21 01:56:24,332 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-40-6-10-6-8-6-10-5-10-5-10-5-10-5-10-5-10-5-9-5-8-5-4-4-3-4-3-4-3-4-3-3-3-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-57-6-10-7-8-6-10-6-10-6-10-5-10-5-10-5-10-5-9-5-8-5-4-4-3-4-3-4-3-4-3-3-3-3-1 context. [2023-12-21 01:56:24,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 01:56:24,336 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 [2023-12-21 01:56:24,366 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-21 01:56:24,368 INFO L158 Benchmark]: Toolchain (without parser) took 865884.73ms. Allocated memory was 213.9MB in the beginning and 857.7MB in the end (delta: 643.8MB). Free memory was 164.6MB in the beginning and 568.8MB in the end (delta: -404.2MB). Peak memory consumption was 240.3MB. Max. memory is 8.0GB. [2023-12-21 01:56:24,368 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory was 133.9MB in the beginning and 133.8MB in the end (delta: 66.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 01:56:24,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.11ms. Allocated memory is still 213.9MB. Free memory was 164.4MB in the beginning and 149.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-21 01:56:24,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.10ms. Allocated memory is still 213.9MB. Free memory was 149.5MB in the beginning and 145.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 01:56:24,368 INFO L158 Benchmark]: Boogie Preprocessor took 80.13ms. Allocated memory is still 213.9MB. Free memory was 145.8MB in the beginning and 141.9MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 01:56:24,368 INFO L158 Benchmark]: RCFGBuilder took 633.83ms. Allocated memory is still 213.9MB. Free memory was 141.6MB in the beginning and 168.9MB in the end (delta: -27.3MB). Peak memory consumption was 20.5MB. Max. memory is 8.0GB. [2023-12-21 01:56:24,368 INFO L158 Benchmark]: TraceAbstraction took 864875.33ms. Allocated memory was 213.9MB in the beginning and 857.7MB in the end (delta: 643.8MB). Free memory was 167.9MB in the beginning and 568.8MB in the end (delta: -400.9MB). Peak memory consumption was 242.9MB. Max. memory is 8.0GB. [2023-12-21 01:56:24,369 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory was 133.9MB in the beginning and 133.8MB in the end (delta: 66.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 245.11ms. Allocated memory is still 213.9MB. Free memory was 164.4MB in the beginning and 149.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.10ms. Allocated memory is still 213.9MB. Free memory was 149.5MB in the beginning and 145.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 80.13ms. Allocated memory is still 213.9MB. Free memory was 145.8MB in the beginning and 141.9MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 633.83ms. Allocated memory is still 213.9MB. Free memory was 141.6MB in the beginning and 168.9MB in the end (delta: -27.3MB). Peak memory consumption was 20.5MB. Max. memory is 8.0GB. * TraceAbstraction took 864875.33ms. Allocated memory was 213.9MB in the beginning and 857.7MB in the end (delta: 643.8MB). Free memory was 167.9MB in the beginning and 568.8MB in the end (delta: -400.9MB). Peak memory consumption was 242.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-40-6-10-6-8-6-10-5-10-5-10-5-10-5-10-5-10-5-9-5-8-5-4-4-3-4-3-4-3-4-3-3-3-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-66-6-10-6-8-6-10-5-10-5-10-5-10-5-10-5-10-5-9-5-8-5-4-4-3-4-3-4-3-4-3-3-3-3-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown